Inventor · disambiguated record
Masaaki Namekawa
Also filed as: NAMEKAWA MASAAKI
14 granted patents·102 citations·filing 1992–2013
91Inventor score
Files withKASHIMA OIL6CITIZEN HOLDINGS CO LTD5CITIZEN WATCH CO LTD1NAMEKAWA MASAAKI1UCHIDA TAKAYUKI1
Top patents by PatentIndex Score
14 records- 0179US8692518B2Electronic apparatusUCHIDA TAKAYUKI·Filed 2007·Granted Apr 8, 2014·9 cites·14 claims
- 0278US7961557B2Analog electronic watchCITIZEN HOLDINGS CO LTD·Filed 2007·Granted Jun 14, 2011·10 cites·20 claims
- 0369US5368771AOptically active tetrahydropyrane derivatives, liquid crystal composition and liquid crystal device containing the sameKASHIMA OIL·Filed 1992·Granted Nov 29, 1994·12 cites·7 claims
- 0466US9612579B2Electronic clockCITIZEN HOLDINGS CO LTD·Filed 2013·Granted Apr 4, 2017·2 cites·19 claims
- 0563US7190745B2Radio-controlled timepiece, standard frequency reception method, and electronic deviceCITIZEN WATCH CO LTD·Filed 2002·Granted Mar 13, 2007·8 cites·20 claims
- 0663US5296616AOptically active fluorine-containing compoundKASHIMA OIL·Filed 1992·Granted Mar 22, 1994·19 cites·10 claims
- 0761US7385876B2Radio-controlled timepiece, electronic device, time correcting method and computer productCITIZEN HOLDINGS CO LTD·Filed 2004·Granted Jun 10, 2008·5 cites·28 claims
- 0860US7372779B2Radio controlled timepiece and method of controlling the sameCITIZEN HOLDINGS CO LTD·Filed 2003·Granted May 13, 2008·5 cites·21 claims
- 0958US5443755AOptically active tetrahydropyrane derivatives, liquid crystal composition and liquid crystal device containing the sameKASHIMA OIL·Filed 1994·Granted Aug 22, 1995·15 cites·6 claims
- 1050US7408845B2Radio corrected clockCITIZEN HOLDINGS CO LTD·Filed 2002·Granted Aug 5, 2008·2 cites·7 claims
- 1148US5595684AOptically active tetrahydropyran derivative, liquid crystal composition, and liquid crystal device containing the sameKASHIMA OIL·Filed 1995·Granted Jan 21, 1997·11 cites·6 claims
- 1233US8848492B2Electronic watchNAMEKAWA MASAAKI·Filed 2011·Granted Sep 30, 2014·0 cites·5 claims
- 1333US5811028AOptically active dihydropyran derivative, and liquid crystal composition, liquid crystal device, and racemic mixture comprising the derivativeKASHIMA OIL·Filed 1997·Granted Sep 22, 1998·3 cites·5 claims
- 1430US5698137AOptically active dihydropyran derivative, and liquid crystal composition, liquid crystal device, and racemic mixture comprising the derivativeKASHIMA OIL·Filed 1996·Granted Dec 16, 1997·1 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →