Inventor · disambiguated record
Masaaki Matsushima
Also filed as: MATSUSHIMA MASAAKI
32 granted patents·1 pending application·474 citations·filing 1975–2017
97Inventor score
Top patents by PatentIndex Score
33 records- 0193US5380349AMold having a diamond layer, for molding optical elementsCANON KK·Filed 1994·Granted Jan 10, 1995·106 cites·2 claims
- 0291US9242889B2Method of manufacturing formed article, glass material, and method of determining shape of glass material and moldYAMAKAJI TETSUMA·Filed 2006·Granted Jan 26, 2016·19 cites·13 claims
- 0387US8277704B2Method of manufacturing formed article, mold and method of manufacturing the sameMATSUSHIMA MASAAKI·Filed 2006·Granted Oct 2, 2012·15 cites·14 claims
- 0485US7950252B2Method of manufacturing formed article, support member, and forming apparatusHOYA CORP·Filed 2006·Granted May 31, 2011·8 cites·9 claims
- 0582US4658388AOptical recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitrideCANON KK·Filed 1985·Granted Apr 14, 1987·27 cites·11 claims
- 0677US6760051B2Image forming apparatus with switching elementsCANON KK·Filed 2002·Granted Jul 6, 2004·19 cites·18 claims
- 0777US6346678B1Circuit board and method of manufacturing a circuit boardCANON KK·Filed 1999·Granted Feb 12, 2002·51 cites·8 claims
- 0877US4837123AMask structure for lithography, method of preparation thereof and lithographic methodCANON KK·Filed 1988·Granted Jun 6, 1989·26 cites·36 claims
- 0976US10156740B2Spectacle wearing parameter measurement device, spectacle wearing parameter measurement program, and position specifying methodHOYA LENS THAILAND LTD·Filed 2016·Granted Dec 18, 2018·3 cites·6 claims
- 1074US4677042AMask structure for lithography, method for preparation thereof and lithographic methodCANON KK·Filed 1985·Granted Jun 30, 1987·23 cites·32 claims
- 1168US4618537ARecording mediumCANON KK·Filed 1984·Granted Oct 21, 1986·13 cites·21 claims
- 1266US4053209AElectrochromic deviceCANON KK·Filed 1975·Granted Oct 11, 1977·18 cites·28 claims
- 1360US4777068AOptical recording mediumCANON KK·Filed 1985·Granted Oct 11, 1988·17 cites·24 claims
- 1459US4741967AMagnetic recording mediumCANON KK·Filed 1984·Granted May 3, 1988·16 cites·9 claims
- 1557US5478416AMagnetic alloyCANON KK·Filed 1994·Granted Dec 26, 1995·12 cites·5 claims
- 1657US4693943AMagnetooptical recording mediumCANON KK·Filed 1984·Granted Sep 15, 1987·13 cites·5 claims
- 1755US7041391B2Method for forming thin filmsCANON KK·Filed 2002·Granted May 9, 2006·1 cites·3 claims
- 1852US7158222B2Method and device for evaluating spectacle lens or mold for molding spectacle lens, and method and system for manufacturing spectacle lensHOYA CORP·Filed 2003·Granted Jan 2, 2007·6 cites·18 claims
- 1952US4710418AOptical recording mediumCANON KK·Filed 1987·Granted Dec 1, 1987·14 cites·6 claims
- 2051US8567861B2Seat with heaterMATSUSHIMA MASAAKI·Filed 2010·Granted Oct 29, 2013·2 cites·10 claims
- 2150US5029429ASealing device for facsimile receiving paperISETO SHIKO KK·Filed 1989·Granted Jul 9, 1991·14 cites·11 claims
- 2249US6383346B2Method for forming thin filmsCANON KK·Filed 1997·Granted May 7, 2002·11 cites·15 claims
- 2346US10955690B2Spectacle wearing parameter measurement system, measurement program, measurement method thereof, and manufacturing method of spectacle lensHOYA LENS THAILAND LTD·Filed 2016·Granted Mar 23, 2021·0 cites·19 claims
- 2445US2020033634A1Spectacle lenses and methods for producing the same from a single semi finished lensHOYA LENS THAILAND LTD·Filed 2017·Application pending·0 cites
- 2544US5777828AMagnetic alloy and magnetic head having at least a part made of the magnetic alloyCANON KK·Filed 1996·Granted Jul 7, 1998·8 cites·16 claims
- 2644US5119328ASolid state memory deviceCANON KK·Filed 1989·Granted Jun 2, 1992·8 cites·8 claims
- 2743US8197727B2Method of manufacturing formed article, covering member, and forming apparatus comprising the sameCHISHA MIKIO·Filed 2006·Granted Jun 12, 2012·0 cites·9 claims
- 2843US4734334AMagneto-optical recording mediumCANON KK·Filed 1984·Granted Mar 29, 1988·4 cites·3 claims
- 2943US4578322ARecording mediumCANON KK·Filed 1985·Granted Mar 25, 1986·9 cites·2 claims
- 3041US6932474B2Progressive-power lensHOYA CORP·Filed 2003·Granted Aug 23, 2005·0 cites·11 claims
- 3133US6184059B1Process of making diamond-metal ohmic junction semiconductor deviceCANON KK·Filed 1995·Granted Feb 6, 2001·2 cites·4 claims
- 3230US5738950AMagnetooptical recording mediumCANON KK·Filed 1995·Granted Apr 14, 1998·0 cites·2 claims
- 3327US4026384AReconstituted mica acoustic diaphragmOKABE MICA KOGYOSHO KK·Filed 1975·Granted May 31, 1977·9 cites·4 claims
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