P

Inventor

YANAGISAWA YOSHITAKE

JP10 patents
⚠️ This page may combine multiple inventors who share the name “YANAGISAWA YOSHITAKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SONY CORP

5 patents
US5914495AJun 22, 1999

Inspection apparatus for inspecting a defect of an optical disc

SONY CORP35 citations92
US5409756AApr 25, 1995

Optical disc with corrosion-resistant metallic reflective layer

SONY CORP22 citations92
US5445853AAug 29, 1995

Optical data storage media

SONY CORP10 citations71
US7852730B2Dec 14, 2010

Optical disk medium, and data recording method and device

SONY CORP2 citations61
US7911929B2Mar 22, 2011

Optical disk read only memory

SONY CORP0 citations40

SONY CORP AND SONY DISC TECHNO

1 patent
US5846626ADec 8, 1998

Optical recording medium and method of producing same

SONY CORP AND SONY DISC TECHNO46 citations86

SONY DISC & DIGITAL SLOUTIONS

1 patent
US7236439B2Jun 26, 2007

Optical disc medium and data recording method and apparatus

SONY DISC & DIGITAL SLOUTIONS12 citations79

SONY DISC TECHNOLOGY INC

1 patent
US5646415AJul 8, 1997

Apparatus for detecting a defect of an optical disc based on sensor outputs for adjacent positions

SONY DISC TECHNOLOGY INC15 citations71

USUI YOSHINOBU

1 patent
US8164992B2Apr 24, 2012

Optical disc medium and data recording method and apparatus

USUI YOSHINOBU0 citations44

MATSUBARA TAKASHI

1 patent
US8216656B2Jul 10, 2012

Disc master, disc master manufacturing method, stamper, disc substrate, optical disc, and optical disc manufacturing method

MATSUBARA TAKASHI0 citations41