Inventor · disambiguated record
Ryuichi Koike
Also filed as: KOIKE RYUICHI
7 granted patents·465 citations·filing 1977–1998
89Inventor score
Top patents by PatentIndex Score
7 records- 0198US5608717AInformation recording media and optical disc presenting a character or a graphic pattern formed by specified pit patterns on data tracksHITACHI LTD·Filed 1994·Granted Mar 4, 1997·196 cites·22 claims
- 0294US5875156APlayback system for an optical disc representing a character or a graphic pattern formed by specified pit patternsHITACHI LTD·Filed 1998·Granted Feb 23, 1999·84 cites·15 claims
- 0393US5751671AInformation recording media and optical disk, disk having specific data so that a visible pattern of characters or graphics appear on a copy diskHITACHI LTD·Filed 1995·Granted May 12, 1998·92 cites·43 claims
- 0481US5963517ADisk reproducing speed control method and a disk reproducing apparatus using the sameHITACHI LTD·Filed 1997·Granted Oct 5, 1999·38 cites·32 claims
- 0580US4127799AApparatus for damping rotation of turntableHITACHI LTD·Filed 1977·Granted Nov 28, 1978·33 cites·4 claims
- 0671US5737306APlayback system for an optical disc presenting a character or a graphic pattern formed by specified pit patterns on data tracksHITACHI LTD·Filed 1996·Granted Apr 7, 1998·19 cites·9 claims
- 0736USD302553SMagnetic tape cassetteSONY CORP·Filed 1985·Granted Aug 1, 1989·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →