Inventor · disambiguated record
Singo Ichikawa
Also filed as: ICHIKAWA SINGO · INOUE YURI · MURAKAMI TOMOMI
17 granted patents·1,801 citations·filing 1976–1985
95Inventor score
Files withCITIZEN WATCH CO LTD17
Top patents by PatentIndex Score
17 records- 0198US4451743ADC-to-DC Voltage converterCITIZEN WATCH CO LTD·Filed 1981·Granted May 29, 1984·1.6k cites·10 claims
- 0291US4272838AElectronic watch module structureCITIZEN WATCH CO LTD·Filed 1979·Granted Jun 9, 1981·39 cites·53 claims
- 0391US4232512ASolid state watch module constructionCITIZEN WATCH CO LTD·Filed 1977·Granted Nov 11, 1980·40 cites·12 claims
- 0482US4268913AElectronic calculator watchCITIZEN WATCH CO LTD·Filed 1977·Granted May 19, 1981·22 cites·39 claims
- 0577US4147022AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1976·Granted Apr 3, 1979·21 cites·5 claims
- 0672US4219999AElectronic timepiece equipped with battery life displayCITIZEN WATCH CO LTD·Filed 1978·Granted Sep 2, 1980·19 cites·21 claims
- 0770US4261048AAnalog quartz timepieceCITIZEN WATCH CO LTD·Filed 1979·Granted Apr 7, 1981·20 cites·1 claims
- 0868US4216649AFunction selection circuit for multi-function timepieceCITIZEN WATCH CO LTD·Filed 1977·Granted Aug 12, 1980·13 cites·11 claims
- 0964US4282594AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1979·Granted Aug 4, 1981·14 cites·7 claims
- 1060US4173863AAnalog quartz timepieceCITIZEN WATCH CO LTD·Filed 1976·Granted Nov 13, 1979·10 cites·37 claims
- 1156US4178750AControl circuit for electronic timepieceCITIZEN WATCH CO LTD·Filed 1977·Granted Dec 18, 1979·7 cites·9 claims
- 1254US4221111AElectronic timepiece having a voltage conversion circuitCITIZEN WATCH CO LTD·Filed 1979·Granted Sep 9, 1980·7 cites·13 claims
- 1346US4226081AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1978·Granted Oct 7, 1980·4 cites·8 claims
- 1444US4175377ATimepiece with display device for warning battery lifeCITIZEN WATCH CO LTD·Filed 1977·Granted Nov 27, 1979·6 cites·8 claims
- 1541US4270193AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1979·Granted May 26, 1981·4 cites·4 claims
- 1640US4236237AElectronic wristwatchCITIZEN WATCH CO LTD·Filed 1978·Granted Nov 25, 1980·4 cites·12 claims
- 1730US4780841AMethod and apparatus for stabilizing measured values for displayCITIZEN WATCH CO LTD·Filed 1985·Granted Oct 25, 1988·5 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →