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Summary of trends in photovoltaic patent activity

This report presents information on patent activity for inventions concerning photovoltaic cell technology. Such information can aid in the assessment of the status and direction of technological development. A total of 729 US patents that issued between mid-1962 and the end of 1982, were individually examined and classified into several technical categories for this study. Computerized analysis of trends in patent activity among major technical categories was performed. The level of inventive … more

Date: June 1, 1984

Creator: Levine, L.O.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Preliminary analysis of patent trends for magnetic fusion technology

This study presents a preliminary analysis of development trends in magnetic fusion technology based on data from US patents. The research is limited to identification and description of general patent activity and ownership characteristics for 373 patents. The results suggest that more detailed studies of fusion patents could provide useful R and D planning information.

Date: February 1, 1984

Creator: Levine, L. O.; Ashton, W. B. & Campbell, R. S.