Bibliography
- MOGEE ME, KOLAR RG: Patent citaion analysis of new chemical entities claimed as pharmaceuticals. Exp. Opin. Ther. Patents (1998) 8(3):213–222.
- •The first article in this series provides a more detailed de-scription of patent citation analysis and related research.
- Pharmaceutical patents and patents for NCEs claimed as pharmaceuticals were identified using Derwent Codes and Manual Codes, respectively.
- The PCAD is a proprietary database of Mogee Research & Analysis Associates that contains information from all utility and design patents (including references) issued by the US Patent and Trademark Office (USPTO) since 1975 (about 1.5 m records). It is designed expressly to facilitate patent cita-tion analysis.
- CAMPBELL RS, NIEVES AL: Technology indicators based on patent data: the case of catalytic converters. Battelle Pacific Northwest Laboratories, Richland, WA (1979).
- FRANKLIN JJ, JOHNSTON R: Co-citation bibliometric modeling as a tool for S&T policy and R&D manage-ment: issues, applications, and developments. In: Handbook of Quantitative Studies of Science and Technol-ogy. van Raan AFJ (Ed.), Elsevier, Amsterdam (1988)325–388.
- SMALL H: Co-citation in the scientific literature: a new measure of the relationship between two documents. J. Am. Soc. Info. Sci. (1973) 24:265–269.
- SMALL H, GRIFFITH BC: The structure of scientific litera-tures. I. Identifying and graphing specialities. Social Studies Sci. (1974) 4:17–40.
- SMALL H, SWEENEY E: Clustering the science citation index using co-citations. I. A comparison of methods. Scientometrics (1985) 7:391–409.