Inventor · disambiguated record
Seijiro Tokutomi
Also filed as: KAWASAKI MASAHIRO · NAKAMURA KAZUO · TOKUTOMI SEIJIRO
18 granted patents·199 citations·filing 1975–1983
94Inventor score
Files withASAHI OPTICAL CO LTD18
Top patents by PatentIndex Score
18 records- 0188US4083056AFocus detecting device for single-lens reflex camerasASAHI OPTICAL CO LTD·Filed 1976·Granted Apr 4, 1978·56 cites·11 claims
- 0275US4180309AFocal point detecting device for SLR cameraASAHI OPTICAL CO LTD·Filed 1977·Granted Dec 25, 1979·28 cites·16 claims
- 0364US4313657ADisplay device for focus detecting and indicating device for cameraASAHI OPTICAL CO LTD·Filed 1980·Granted Feb 2, 1982·19 cites·2 claims
- 0464US4172645ADual purpose finder display for single lens reflex cameraASAHI OPTICAL CO LTD·Filed 1977·Granted Oct 30, 1979·6 cites·2 claims
- 0559US3995286AElectronic strobe with optionally-operable controlsASAHI OPTICAL CO LTD·Filed 1975·Granted Nov 30, 1976·5 cites·10 claims
- 0656US4244643AManual setting device in digital type electrical control cameraASAHI OPTICAL CO LTD·Filed 1979·Granted Jan 13, 1981·4 cites·9 claims
- 0754US4171884AElectrically controlled camera deviceASAHI OPTICAL CO LTD·Filed 1977·Granted Oct 23, 1979·4 cites·7 claims
- 0852US4293206AElectrically operated automatic focalizing cameraASAHI OPTICAL CO LTD·Filed 1980·Granted Oct 6, 1981·12 cites·3 claims
- 0952US4230401ACamera focus detecting deviceASAHI OPTICAL CO LTD·Filed 1978·Granted Oct 28, 1980·12 cites·21 claims
- 1044US4258989AFocus detecting deviceASAHI OPTICAL CO LTD·Filed 1979·Granted Mar 31, 1981·8 cites·11 claims
- 1143US4192589AAbnormal operation warning apparatus for a cameraASAHI OPTICAL CO LTD·Filed 1977·Granted Mar 11, 1980·2 cites·3 claims
- 1242US4408853AFocus detecting deviceASAHI OPTICAL CO LTD·Filed 1978·Granted Oct 11, 1983·9 cites·12 claims
- 1341US4580042AFocusing position detecting device using a sector shaped mirrorASAHI OPTICAL CO LTD·Filed 1983·Granted Apr 1, 1986·7 cites·10 claims
- 1441US4293205ACamera focus detecting deviceASAHI OPTICAL CO LTD·Filed 1979·Granted Oct 6, 1981·7 cites·14 claims
- 1540US4600830AFocus detecting deviceASAHI OPTICAL CO LTD·Filed 1983·Granted Jul 15, 1986·6 cites·6 claims
- 1639US4265520AFocus detecting device in single lens reflex cameraASAHI OPTICAL CO LTD·Filed 1978·Granted May 5, 1981·6 cites·16 claims
- 1737US4253751ACamera focus detecting deviceASAHI OPTICAL CO LTD·Filed 1979·Granted Mar 3, 1981·5 cites·13 claims
- 1832US4384770AFocus detecting deviceASAHI OPTICAL CO LTD·Filed 1981·Granted May 24, 1983·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →