Inventor · disambiguated record
Katsuaki Tsurushima
Also filed as: TSURUSHIMA KATSUAKI
20 granted patents·1 pending application·612 citations·filing 1974–2000
96Inventor score
Files withSONY CORP20
Top patents by PatentIndex Score
21 records- 0195US5521900ADisk having a lead-in region containing display data and an apparatus for recording and/or reproducing the discSONY CORP·Filed 1993·Granted May 28, 1996·68 cites·10 claims
- 0293US5299186ADisc protecting coverSONY CORP·Filed 1986·Granted Mar 29, 1994·56 cites·8 claims
- 0392US6575581B2Image projection method and image projectorSONY CORP·Filed 2000·Granted Jun 10, 2003·60 cites·11 claims
- 0492US5537387AInformation storage disk with display data recorded in a lead-in region and an apparatus for recording and/reproducing the discSONY CORP·Filed 1995·Granted Jul 16, 1996·66 cites·13 claims
- 0591US4473274AObjective lens assembly for optical disc playerSONY CORP·Filed 1982·Granted Sep 25, 1984·39 cites·13 claims
- 0690US5345433AOptical disc recording apparatus and optical disc reproducing apparatusSONY CORP·Filed 1992·Granted Sep 6, 1994·57 cites·19 claims
- 0790US5244705ADisc-shaped recording mediumSONY CORP·Filed 1991·Granted Sep 14, 1993·50 cites·10 claims
- 0889US5317553AOptical disc recording and/or reproducing apparatus having a buffer memory to accommodate track jumpsSONY CORP·Filed 1991·Granted May 31, 1994·52 cites·7 claims
- 0982US5859834AOptical disc with magnetic member in a recessed portion thereof and method for producing said optical discSONY CORP·Filed 1994·Granted Jan 12, 1999·32 cites·11 claims
- 1082US4031482ABias circuit for FETSONY CORP·Filed 1975·Granted Jun 21, 1977·19 cites·12 claims
- 1176US3968382AProtective circuit for field effect transistor amplifierSONY CORP·Filed 1974·Granted Jul 6, 1976·21 cites·10 claims
- 1269US5148418ADisc recording apparatusSONY CORP·Filed 1992·Granted Sep 15, 1992·18 cites·11 claims
- 1367US4482988AObjective lens mount and drive for optical disc playerSONY CORP·Filed 1984·Granted Nov 13, 1984·13 cites·8 claims
- 1466US3943286AVariable gain control circuitSONY CORP·Filed 1974·Granted Mar 9, 1976·14 cites·3 claims
- 1564US3992677AMuting circuitSONY CORP·Filed 1975·Granted Nov 16, 1976·11 cites·7 claims
- 1659US4519058AOptical disc playerSONY CORP·Filed 1982·Granted May 21, 1985·9 cites·5 claims
- 1755US5666347AOptical disk and disk chucking mechanismSONY CORP·Filed 1994·Granted Sep 9, 1997·9 cites·7 claims
- 1848US5467332ADisc cleaning deviceSONY CORP·Filed 1992·Granted Nov 14, 1995·7 cites·2 claims
- 1945US3949316ACascade-connected transistor amplifierSONY CORP·Filed 1975·Granted Apr 6, 1976·6 cites·10 claims
- 2042US3955154AOscillator circuitSONY CORP·Filed 1975·Granted May 4, 1976·5 cites·3 claims
- 2130US2001047256A1Multi-format recording mediumFiled 1998·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →