Inventor · disambiguated record
Seiichi Shingaki
Also filed as: SHINGAKI SEIICHI
8 granted patents·84 citations·filing 1983–1989
87Inventor score
Top patents by PatentIndex Score
8 records- 0164US4971423AGradient-index-type optical deviceCANON KK·Filed 1988·Granted Nov 20, 1990·23 cites·11 claims
- 0258US4525189AProcess for producing glass product having gradient of refractive indexHOYA CORP·Filed 1983·Granted Jun 25, 1985·14 cites·7 claims
- 0355US4844589ALenses having plural contiguous refractive index distribution substrates and method of manufactureHOYA CORP·Filed 1988·Granted Jul 4, 1989·16 cites·3 claims
- 0452US5032000AGradient index-type optical device and process for production thereofCANON KK·Filed 1989·Granted Jul 16, 1991·14 cites·5 claims
- 0538US4767435AProcess for producing transparent glass product having refractive index gradientHOYA CORP·Filed 1986·Granted Aug 30, 1988·6 cites·5 claims
- 0638US4640699AProcess for producing glass product having gradient of refractive indexHOYA CORP·Filed 1985·Granted Feb 3, 1987·6 cites·9 claims
- 0734US4563205AProcess for the production of slab-shaped lens having gradient of refractive index in thickness direction onlyHOYA CORP·Filed 1984·Granted Jan 7, 1986·4 cites·1 claims
- 0829US4946724AVitreous film and heat-mode optical recording medium using sameCANON KK·Filed 1988·Granted Aug 7, 1990·1 cites·6 claims
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