Inventor · disambiguated record
Toshifumi Fukuyama
Also filed as: FUKUYAMA TOSHIFUMI
16 granted patents·331 citations·filing 1976–1990
95Inventor score
Top patents by PatentIndex Score
16 records- 0191US4282430AReflection-type photoelectric switching apparatusOMRON TATEISI ELECTRONICS CO·Filed 1979·Granted Aug 4, 1981·80 cites·11 claims
- 0286US4306147AReflection-type photoelectric switching apparatusOMRON TATEISI ELECTRONICS CO·Filed 1979·Granted Dec 15, 1981·51 cites·3 claims
- 0383US4051365APhotoelectric detector having an indicator for indicating the operating condition thereofOMRON TATEISI ELECTRONICS CO·Filed 1976·Granted Sep 27, 1977·41 cites·15 claims
- 0470US5059782AMulti-function detection circuit for a photoelectric switch using an integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1990·Granted Oct 22, 1991·27 cites·3 claims
- 0563US5117118APhotoelectric switch using an integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1989·Granted May 26, 1992·17 cites·13 claims
- 0662US4207464APhotoelectric switchOMRON TATEISI ELECTRONICS CO·Filed 1978·Granted Jun 10, 1980·23 cites·9 claims
- 0759US5059809ALight-responsive device for a photoelectric switchASTEX CO LTD·Filed 1990·Granted Oct 22, 1991·16 cites·4 claims
- 0857US5057683AError preventive circuit for a photoelectric switchASTEX CO LTD·Filed 1989·Granted Oct 15, 1991·11 cites·10 claims
- 0957US4211923AFluid tight ultrasonically welded photoelectric deviceOMRON TATEISI ELECTRONICS CO·Filed 1978·Granted Jul 8, 1980·21 cites·11 claims
- 1056US4381446APhotoelectric switchOMRON TATEISI ELECTRONICS CO·Filed 1981·Granted Apr 26, 1983·16 cites·5 claims
- 1148US4388527APhotoelectric switchOMRON TATEISI ELECTRONICS CO·Filed 1981·Granted Jun 14, 1983·7 cites·2 claims
- 1245US4551640ADual electronic switching device with reduced external terminalsOMRON TATEISI ELECTRONICS CO·Filed 1984·Granted Nov 5, 1985·6 cites·12 claims
- 1338US5030821AMulti-function detection circuit for a photoelectric switch using an integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1990·Granted Jul 9, 1991·5 cites·4 claims
- 1435US5030822ASynchronous control circuit for a photoelectric switch using an integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1990·Granted Jul 9, 1991·4 cites·3 claims
- 1534US5034601AStable indicator circuit for photoelectric switch using an integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1990·Granted Jul 23, 1991·3 cites·4 claims
- 1633US5034600ADetection output circuit for a photoelectric switch integrated circuit with reduced interconnectionsASTEX CO LTD·Filed 1990·Granted Jul 23, 1991·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →