Inventor · disambiguated record
Ryoji Iwakura
Also filed as: IWAKURA RYOJI · TAKAHASHI KAZUTOSHI
8 granted patents·58 citations·filing 1977–2003
84Inventor score
Top patents by PatentIndex Score
8 records- 0166US6894952B2Timer of electric timepieceCITIZEN WATCH CO LTD·Filed 2001·Granted May 17, 2005·10 cites·11 claims
- 0265US4346350AFET Quartz oscillatorsCITIZEN WATCH CO LTD·Filed 1980·Granted Aug 24, 1982·18 cites·8 claims
- 0358US4370067AElectronic timepiece with gain/loss adjustmentCITIZEN WATCH CO LTD·Filed 1980·Granted Jan 25, 1983·14 cites·10 claims
- 0457US6727769B2Crystal oscillator circuit using CMOSFETsCITIZEN WATCH CO LTD·Filed 2002·Granted Apr 27, 2004·7 cites·9 claims
- 0554US7436737B2Electric timepieceCITIZEN HOLDINGS CO LTD·Filed 2003·Granted Oct 14, 2008·6 cites·25 claims
- 0641US6853219B2Charging circuitCITIZEN WATCH CO LTD·Filed 2002·Granted Feb 8, 2005·0 cites·20 claims
- 0734US4433920AElectronic timepiece having improved primary frequency divider response characteristicsCITIZEN WATCH CO LTD·Filed 1981·Granted Feb 28, 1984·3 cites·5 claims
- 0829US4173117AElectronic timepieceCITIZEN WATCH CO LTD·Filed 1977·Granted Nov 6, 1979·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →