Last updated July, 3 2014 639.049 documents processed, 16.613.935 references and 6.218.529 citations

World Patent Information / Elsevier


[Raw data] [Main indicators] [Most cited papers] [cites used to compute the impact factor] [Recent citations ][documents published in EconPapers] [Keep updated about new citations] [Missing citations? Add them now] [Incorrect content? Let us know]

Main indicators


Raw data:


IF AIF DOC CDO CCU CIF CIT D2Y C2Y %SC CiY II AII
19900.093131015400.04
19910.092859006100.04
19920.09349320.0205900.04
19930.131124006200.05
19940.1134158006500.05
19950.23219020.0126500.08
19960.24232131006600.1
19970.326239045500.11
19980.29142531014900.11
19990.3427280074000.15
20000.423031040.0164100.16
20010.44303401005700.17
20020.45223621076000.2
20030.473239460.022152030.090.2
20040.020.533242640.01454100.22
20050.562645280.0276400.23
20060.020.553248450.011058100.22
20070.030.4728512140.0311582010.040.19
20080.020.525537120.02960100.21
20090.040.5128565120.02153200.21
20100.020.473960480.01253100.17
20110.5552656140.0266700.22
20120.020.67656290.04091200.26
20130.040.92656200.03052200.34
20140.6865690.010000.24
 
 
IF: Impact Factor: C2Y / D2Y
AIF: Average Impact Factor for series in RePEc in year y
DOC: Number of documents published in year y
CDO: Cumulative number of documents published until year y
CCU: Cumulative number of citations to papers published until year y
CIF: Cumulative impact factor
CIT: Number of citations to papers published in year y
D2Y: Number of articles published in y-1 plus y-2
C2Y: Cites in y to articles published in y-1 plus y-2
%SC: Percentage of selft citations in y to articles published in y-1 plus y-2
CiY: Cites in year y to documents published in year y
II: Immediacy Index: CiY / Documents.
AII: Average Immediacy Index for series in RePEc in year y

 

Most cited documents in this series:


YearTitleCited
1981Citation rates to technologically important patents. (1981). Narin, Francis ; Woolf, Patricia ; Carpenter, Mark P.. In: World Patent Information. RePEc:eee:worpat:v:3:y:1981:i:4:p:160-163.

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21
1983Validation study: Patent citations as indicators of science and foreign dependence. (1983). Narin, Francis ; Carpenter, Mark P.. In: World Patent Information. RePEc:eee:worpat:v:5:y:1983:i:3:p:180-185.

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15
1999Trade marks: complementary to patents. (1999). Rujas, Javier . In: World Patent Information. RePEc:eee:worpat:v:21:y:1999:i:1:p:35-39.

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6
2007The rigour of EPOs patentability criteria: An insight into the induced withdrawals. (2007). van Pottelsberghe de la Potterie, Bruno ; Lazaridis, George ; van Pottelsberghe de la Potterie, Bruno, . In: World Patent Information. RePEc:eee:worpat:v:29:y:2007:i:4:p:317-326.

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5
2000The referencing of prior art documents in European patents and applications. (2000). Akers, Noel J.. In: World Patent Information. RePEc:eee:worpat:v:22:y:2000:i:4:p:309-315.

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5
2003Determinants of foreign patents in China. (2003). Sun, Yifei. In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:1:p:27-37.

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5
2006Mapping nanotechnology patents: The EPO approach. (2006). Scheu, M. ; Verbandt, Y. ; Forster, W. ; Veefkind, V. ; Absalom, R. ; Galan, Molina E.. In: World Patent Information. RePEc:eee:worpat:v:28:y:2006:i:3:p:204-211.

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5
2003Patent information for strategic technology management. (2003). Ernst, Holger . In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:3:p:233-242.

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5
2003Historical perspectives on IP protection for software in selected countries worldwide. (2003). Diallo, Barrou . In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:1:p:19-25.

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5
2008Assessment of technological capability in science industry linkage in China by patent database. (2008). Motohashi, Kazuyuki. In: World Patent Information. RePEc:eee:worpat:v:30:y:2008:i:3:p:225-232.

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4
1997Patent citation analysis: A policy analysis tool. (1997). Karki, M. M. S., . In: World Patent Information. RePEc:eee:worpat:v:19:y:1997:i:4:p:269-272.

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4
2002The patent activities of Korea and Taiwan: a comparative case study of patent statistics. (2002). Imm, Keun-Young ; Jung, Sungchang . In: World Patent Information. RePEc:eee:worpat:v:24:y:2002:i:4:p:303-311.

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4
2007When is a search not a search? The EPO approach. (2007). Scott, Jeremy R. M., . In: World Patent Information. RePEc:eee:worpat:v:29:y:2007:i:2:p:108-116.

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3
2002The electric vehicle:: Patent data as indicators of technological development. (2002). PILKINGTON, ALAN ; Dyerson, Romano ; Tissier, Omid . In: World Patent Information. RePEc:eee:worpat:v:24:y:2002:i:1:p:5-12.

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3
2003The development of intellectual property in China. (2003). Yang, Deli . In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:2:p:131-142.

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3
2005Cross comparison of US, EU, JP and Korean companies patenting activity in Japan and in the Peoples Republic of China. (2005). O'Keeffe, Michael . In: World Patent Information. RePEc:eee:worpat:v:27:y:2005:i:2:p:125-134.

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3
2005Independent inventors and public support measures: insights from 33 case studies in Finland. (2005). Meyer, Martin. In: World Patent Information. RePEc:eee:worpat:v:27:y:2005:i:2:p:113-123.

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3
1983Patent statistics as a measure of technological vitality. (1983). Aspden, H.. In: World Patent Information. RePEc:eee:worpat:v:5:y:1983:i:3:p:170-173.

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3
1981Analysis by means of a gravitation model of international flows of patent applications in the period 1967-1978. (1981). Slama, Jiri. In: World Patent Information. RePEc:eee:worpat:v:3:y:1981:i:1:p:2-8.

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3
1982The office of technology assessment and forecast industry concordance as a means of identifying industry technology origins. (1982). Scherer, F. M.. In: World Patent Information. RePEc:eee:worpat:v:4:y:1982:i:1:p:12-17.

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3
2011Patenting activities by developing countries: The case of Malaysia. (2011). Govindaraju, Chandran VGR ; Wong, Chan-Yuan ; Chandran Govindaraju, V. G. R., . In: World Patent Information. RePEc:eee:worpat:v:33:y:2011:i:1:p:51-57.

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2
2011Europe should stop taxing innovation. (2011). van Pottelsberghe de la Potterie, Bruno ; van Pottelsberghe de la Potterie, Bruno, . In: World Patent Information. RePEc:eee:worpat:v:33:y:2011:i:1:p:16-22.

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2
2008Patent inflation in Europe. (2008). van Pottelsberghe de la Potterie, Bruno ; van Zeebroeck, Nicolas ; Guellec, D. ; van Pottelsberghe de la Potterie, B., ; Stevnsborg, N. ; Archontopoulos, E.. In: World Patent Information. RePEc:eee:worpat:v:30:y:2008:i:1:p:43-52.

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2
2005Using intellectual property data to analyse Chinas growing technological capabilities. (2005). Fai, Felicia M.. In: World Patent Information. RePEc:eee:worpat:v:27:y:2005:i:1:p:49-61.

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2
1983Patent trends as a technological forecasting tool. (1983). Campbell, Richard S.. In: World Patent Information. RePEc:eee:worpat:v:5:y:1983:i:3:p:137-143.

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2
2006Patent filing and searching: Is deflation in quality the inevitable consequence of hyperinflation in quantity?. (2006). Philipp, Minoo . In: World Patent Information. RePEc:eee:worpat:v:28:y:2006:i:2:p:117-121.

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2
1980Patenting, profitability and marketing characteristics of the pharmaceutical industry. (1980). Withers, Anna K. ; Nolan, Maureen P. ; Oppenheim, Charles . In: World Patent Information. RePEc:eee:worpat:v:2:y:1980:i:4:p:169-176.

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2
1990The importance of the technological activities of the worlds largest firms. (1990). Patel, Parimal ; Pavitt, Keith . In: World Patent Information. RePEc:eee:worpat:v:12:y:1990:i:2:p:89-94.

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1
2003The future of prior art searching at the United States patent and trademark office. (2003). Kazenske, Edward R.. In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:4:p:283-287.

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1
2006Protection of plant-related innovations: Evolution and current discussion. (2006). Le Buanec, Bernard . In: World Patent Information. RePEc:eee:worpat:v:28:y:2006:i:1:p:50-62.

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1
1998Providing modern information services for small and medium-sized enterprises (SMEs). (1998). Andrick, J.. In: World Patent Information. RePEc:eee:worpat:v:20:y:1998:i:2:p:107-110.

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1
2009Patenting activities in Turkey: The case of the textile industry. (2009). Durmusoglu, Alptekin ; Dereli, Turkay . In: World Patent Information. RePEc:eee:worpat:v:31:y:2009:i:2:p:123-130.

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1
2004Use of the IPC and various retrieval systems to research patent activities of US organizations in the Peoples Republic of China. (2004). Wu, Connie ; Liu, Yanhuai . In: World Patent Information. RePEc:eee:worpat:v:26:y:2004:i:3:p:225-233.

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1
2006Japans intellectual property strategy. (2006). Arai, Hisamitsu . In: World Patent Information. RePEc:eee:worpat:v:28:y:2006:i:4:p:323-326.

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1
2008Visualizing patent statistics by means of social network analysis tools. (2008). Bartkowski, Adam ; Schramm, Reinhard ; Sternitzke, Christian . In: World Patent Information. RePEc:eee:worpat:v:30:y:2008:i:2:p:115-131.

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1
2003Plant variety protection--A fascinating subject. (2003). Thiele-Wittig, Max ; Claus, Paul . In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:3:p:243-250.

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1
2011Using patents and publications to assess R&D efficiency in the states of the USA. (2011). Sharma, Seema ; Thomas, V. J. ; Jain, Sudhir K.. In: World Patent Information. RePEc:eee:worpat:v:33:y:2011:i:1:p:4-10.

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1
2007The Iranian patenting system: An introduction. (2007). Rashtchi, Maryam ; Bagheri, Seyed Kamran ; Rezapour, Morteza ; Bakhtiari, Mohammad Reza . In: World Patent Information. RePEc:eee:worpat:v:29:y:2007:i:3:p:250-254.

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1
2009A patent based evaluation of technological innovation capability in eight economic regions in PR China. (2009). Meyer, Martin ; Shu, Fang ; Yang, Zhiping ; Chen, Yunwei ; Bhattacharya, Sujit . In: World Patent Information. RePEc:eee:worpat:v:31:y:2009:i:2:p:104-110.

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1
2004Light on simultaneous invention from US Patent Office Interference records. (2004). Kingston, William . In: World Patent Information. RePEc:eee:worpat:v:26:y:2004:i:3:p:209-220.

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1
1981Results of a statistical study of the references cited in the search reports established by the EPO (January 1981). (1981). Bare, Robert . In: World Patent Information. RePEc:eee:worpat:v:3:y:1981:i:2:p:56-60.

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1
2000Carbon nanotubes: bibliometric analysis of patents. (2000). Pangannaya, N. B. ; Gupta, V. K.. In: World Patent Information. RePEc:eee:worpat:v:22:y:2000:i:3:p:185-189.

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1
2008James Watt: The steam engine and the commercialization of patents. (2008). Spear, Brian . In: World Patent Information. RePEc:eee:worpat:v:30:y:2008:i:1:p:53-58.

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1
1995Patent documents: a multi-edge tool. (1995). Blackman, M. J. R., ; Ganguli, P.. In: World Patent Information. RePEc:eee:worpat:v:17:y:1995:i:4:p:245-256.

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1
2007Extending legal protection strategies to the service innovations area: Review and analysis. (2007). Bader, Martin A.. In: World Patent Information. RePEc:eee:worpat:v:29:y:2007:i:2:p:122-135.

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1
2009The Iranian patent reform. (2009). Moradpour, Hamid Azizi ; Bagheri, Seyed Kamran ; Rezapour, Morteza . In: World Patent Information. RePEc:eee:worpat:v:31:y:2009:i:1:p:32-35.

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1
2004Patents and patent information in 1979 and 2004: a perspective from India. (2004). Ganguli, Prabuddha . In: World Patent Information. RePEc:eee:worpat:v:26:y:2004:i:1:p:61-62.

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1
2006GB innovation since 1950 and the role of the independent inventor: An analysis of completed term patents. (2006). Spear, Brian . In: World Patent Information. RePEc:eee:worpat:v:28:y:2006:i:2:p:140-146.

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1
1999The European Patent System: an introduction for patent searchers. (1999). Akers, Noel J.. In: World Patent Information. RePEc:eee:worpat:v:21:y:1999:i:3:p:135-163.

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1
2003Free patent information as a resource for policy analysis. (2003). Meyer, Martin ; Utecht, Jan Timm ; Goloubeva, Tatiana . In: World Patent Information. RePEc:eee:worpat:v:25:y:2003:i:3:p:223-231.

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1

Citing documents used to compute impact factor 0:


YearTitleSee

Cites in year: CiY


Recent citations received in: 2011


YearTitleSee

Warning!! This is still an experimental service. The results of this service should be interpreted with care, especially in research assessment exercises. The processing of documents is automatic. There still are errors and omissions in the identification of references. We are working to improve the software to increase the accuracy of the results.

Source data used to compute the impact factor of RePEc series.