Inventor · disambiguated record
Ryoichi Sudo
Also filed as: SUDO RYOICHI
32 granted patents·548 citations·filing 1977–2002
98Inventor score
Top patents by PatentIndex Score
32 records- 0191US4729938AOptical disc base plate having a primer layer formed of an ultraviolet-cured resin compositionHITACHI LTD·Filed 1985·Granted Mar 8, 1988·46 cites·16 claims
- 0290US5401610AOptical discHITACHI LTD·Filed 1993·Granted Mar 28, 1995·31 cites·4 claims
- 0390US4897228AMethod for producing optical disk baseHITACHI LTD·Filed 1987·Granted Jan 30, 1990·44 cites·12 claims
- 0490US4145369AFlame-retardant epoxy resin compositionsHITACHI LTD·Filed 1977·Granted Mar 20, 1979·37 cites·22 claims
- 0584US6191675B1High voltage transformer and ignition transformer using the sameHITACHI LTD·Filed 1999·Granted Feb 20, 2001·39 cites·30 claims
- 0681US4668550AOptical discHITACHI LTD·Filed 1986·Granted May 26, 1987·26 cites·9 claims
- 0776US4437731ALiquid crystal display deviceHITACHI LTD·Filed 1981·Granted Mar 20, 1984·31 cites·11 claims
- 0876US4420500AComposition and process for preparing transparent conducting filmHITACHI LTD·Filed 1982·Granted Dec 13, 1983·33 cites·27 claims
- 0975US5244775AMethod of manufacturing an optical discHITACHI LTD·Filed 1992·Granted Sep 14, 1993·13 cites·18 claims
- 1075US4273420ALiquid crystal display deviceHITACHI LTD·Filed 1979·Granted Jun 16, 1981·23 cites·5 claims
- 1174US4303554AComposition and process for producing transparent conductive filmHITACHI LTD·Filed 1980·Granted Dec 1, 1981·28 cites·27 claims
- 1270US5766407AOptical disk producing apparatusHITACHI LTD·Filed 1996·Granted Jun 16, 1998·24 cites·5 claims
- 1370US4369208AProcess for producing transparent electroconductive filmHITACHI LTD·Filed 1980·Granted Jan 18, 1983·25 cites·5 claims
- 1465US5543271AOptical recording and reproduction apparatusHITACHI LTD·Filed 1995·Granted Aug 6, 1996·10 cites·26 claims
- 1564US4889757AOptical recording diskHITACHI LTD·Filed 1987·Granted Dec 26, 1989·12 cites·34 claims
- 1661US6465151B1Method of manufacturing optical discsHITACHI LTD·Filed 2000·Granted Oct 15, 2002·2 cites·13 claims
- 1761US5582677AOptical disk producing apparatusHITACHI LTD·Filed 1993·Granted Dec 10, 1996·25 cites·3 claims
- 1861US5234792AOptical data recording medium and manufacturing method thereofHITACHI MAXELL·Filed 1992·Granted Aug 10, 1993·11 cites·19 claims
- 1958US4472028AOrganosilicone homeotropic alignment layer with OH groupHITACHI LTD·Filed 1981·Granted Sep 18, 1984·17 cites·18 claims
- 2057US6573025B2Optical discHITACHI LTD·Filed 2002·Granted Jun 3, 2003·1 cites·3 claims
- 2154US4835027AOptical discHITACHI LTD·Filed 1987·Granted May 30, 1989·9 cites·19 claims
- 2250US4812346AOptical disc base plate and process for producing the sameHITACHI LTD·Filed 1986·Granted Mar 14, 1989·14 cites·9 claims
- 2349US5906907AOptical discHITACHI LTD·Filed 1997·Granted May 25, 1999·4 cites·29 claims
- 2446US4456659ASubstrate for optical disc recording mediaHITACHI LTD·Filed 1983·Granted Jun 26, 1984·9 cites·6 claims
- 2544US5686227AOptical reproduction apparatusHITACHI LTD·Filed 1996·Granted Nov 11, 1997·3 cites·26 claims
- 2644US4866338AUnsaturated polyester resin composition for cathode ray tube and its useHITACHI LTD·Filed 1987·Granted Sep 12, 1989·5 cites·6 claims
- 2738US5254659AInsulating coating composition, solderable insulated wires, production process of the insulated wires and flyback transformers using the insulated wiresHITACHI LTD·Filed 1991·Granted Oct 19, 1993·9 cites·22 claims
- 2837US4957990AMaterials for optical useHITACHI LTD·Filed 1988·Granted Sep 18, 1990·7 cites·4 claims
- 2936US6140028AOptical recording and reproduction apparatusHITACHI LTD·Filed 1999·Granted Oct 31, 2000·1 cites·58 claims
- 3036US5071236AReplica plate, process for producing the same and projection type television using the sameHITACHI LTD·Filed 1990·Granted Dec 10, 1991·5 cites·21 claims
- 3135US5427893AOptical data recording mediumHITACHI MAXELL·Filed 1993·Granted Jun 27, 1995·2 cites·37 claims
- 3234US5084225AMethod for making a cathode ray tubeHITACHI LTD·Filed 1989·Granted Jan 28, 1992·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →