Inventor · disambiguated record
Stephen P. Birkeland
Also filed as: BIRKELAND STEPHEN P
5 granted patents·103 citations·filing 1975–1982
83Inventor score
Files withMINNESOTA MINING & MFG5
Top patents by PatentIndex Score
5 records- 0188US4455076AFilm supply cassette for camera processorMINNESOTA MINING & MFG·Filed 1982·Granted Jun 19, 1984·28 cites·5 claims
- 0285USD271113SChemical containerMINNESOTA MINING & MFG·Filed 1981·Granted Oct 25, 1983·31 cites·1 claims
- 0377US4052209ASemiconductive and sensitized photoconductive compositionsMINNESOTA MINING & MFG·Filed 1975·Granted Oct 4, 1977·21 cites·19 claims
- 0465US4134764ASemiconductive and sensitized photoconductive compositionsMINNESOTA MINING & MFG·Filed 1976·Granted Jan 16, 1979·13 cites·2 claims
- 0555US4222902ASemiconductive and sensitized photoconductive compositionsMINNESOTA MINING & MFG·Filed 1978·Granted Sep 16, 1980·10 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →