Inventor · disambiguated record
Hirofumi Kamitakahara
Also filed as: KAMITAKAHARA HIROFUMI
21 granted patents·513 citations·filing 1990–1997
96Inventor score
Files withCANON KK21
Top patents by PatentIndex Score
21 records- 0192US5147763AProcess for producing molding stamper for data recording medium substrateCANON KK·Filed 1992·Granted Sep 15, 1992·64 cites·13 claims
- 0290US5759455ARoller-shaped stamper for fabricating optical scalesCANON KK·Filed 1997·Granted Jun 2, 1998·71 cites·12 claims
- 0388US5516469AProcess for producing substrate sheet for information recording mediumsCANON KK·Filed 1994·Granted May 14, 1996·36 cites·6 claims
- 0486US5167792AMaster holder of stamper electroforming apparatus and electroforming methodCANON KK·Filed 1991·Granted Dec 1, 1992·35 cites·35 claims
- 0585US5368789AMethod for forming substrate sheet for optical recording mediumCANON KK·Filed 1991·Granted Nov 29, 1994·50 cites·17 claims
- 0681US5527497AProcess and apparatus for manufacturing substrate sheet for optical recording mediums, and process for preparing stamperCANON KK·Filed 1993·Granted Jun 18, 1996·39 cites·49 claims
- 0779US5324188ARoller stamper for molding a substrate sheet to become an information recording mediumCANON KK·Filed 1993·Granted Jun 28, 1994·23 cites·10 claims
- 0871US5173313ARoll-stamper for forming substrate of information-recording mediumCANON KK·Filed 1991·Granted Dec 22, 1992·32 cites·31 claims
- 0970US6276786B1Packaging structure for ink tank and ink tank packaged in such packaging structureCANON KK·Filed 1997·Granted Aug 21, 2001·28 cites·23 claims
- 1064US5320787AApparatus and process for manufacturing substrate sheet for information recording mediumsCANON KK·Filed 1992·Granted Jun 14, 1994·14 cites·37 claims
- 1163US5320514ARoll stamper, and apparatus and process for manufacturing substrate sheet for information recording mediums by using the sameCANON KK·Filed 1992·Granted Jun 14, 1994·20 cites·28 claims
- 1257US5433897AMethod and apparatus for preparing substrate sheet for optical recording mediumCANON KK·Filed 1993·Granted Jul 18, 1995·18 cites·25 claims
- 1354US5147592AProcess of and apparatus for preparing optical recording medium substratesCANON KK·Filed 1990·Granted Sep 15, 1992·19 cites·7 claims
- 1450US5383834ARoll stamper for forming a base for information recording mediumCANON KK·Filed 1992·Granted Jan 24, 1995·13 cites·32 claims
- 1550US5281372AProcess for producing resin moldings having a concave-convex pattern on the surfaceCANON KK·Filed 1992·Granted Jan 25, 1994·14 cites·31 claims
- 1649US5266136AProcess for producing a roll stamper for molding a substrate sheet for information recording mediumsCANON KK·Filed 1993·Granted Nov 30, 1993·13 cites·6 claims
- 1747US5267228ASubstrates for optical cards, process for preparing substrates for optical cards, optical cards and apparatus for recording and reproducing information on optical cardsCANON KK·Filed 1991·Granted Nov 30, 1993·6 cites·6 claims
- 1844US5308235ARoll stamper and apparatus for forming a substrate for information recording mediumCANON KK·Filed 1992·Granted May 3, 1994·9 cites·44 claims
- 1939US5460766AProcess of making substrate for an optical recording mediumCANON KK·Filed 1994·Granted Oct 24, 1995·3 cites·13 claims
- 2036US5456866AProcess for manufacturing a substrate sheet for information recording mediumsCANON KK·Filed 1994·Granted Oct 10, 1995·5 cites·6 claims
- 2130US5503888AOptical recording medium, substrate for optical recording medium, and method for preparing substrate for optical recording mediumCANON KK·Filed 1993·Granted Apr 2, 1996·1 cites·31 claims
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