P

Inventor

HAYASHI KAZUHIRO

JP146 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI KAZUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

11 patents
US6613170B1Sep 2, 2003

Optical information recording medium and its manufacturing method and apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations96
US7389520B2Jun 17, 2008

Optical data recording disc with protrusion between clamping area and center hole

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations92
US6743527B2Jun 1, 2004

Optical disk, method for producing the same, and apparatus for producing the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations92
US7195691B2Mar 27, 2007

Optical data recording medium and manufacturing method for the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations84
US6743320B2Jun 1, 2004

Method and apparatus of optical information recording medium, and optical information recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US7409699B2Aug 5, 2008

Optical data recording disc with protrusion between clamping area and center hole

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations74
US7401347B2Jul 15, 2008

Optical data recording medium with protrusion bonded between center hole and clamping area

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations74
US7401346B2Jul 15, 2008

Optical data recording disc with protrusion between clamping area and center hole

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5 citations74
US7290272B2Oct 30, 2007

Optical data recording disc with protrusion between clamping area and center hole

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations74
US7065776B2Jun 20, 2006

Optical data recording medium and manufacturing method for the same, and a method for clamping the optical data recording medium

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations74
US6863946B2Mar 8, 2005

Optical information recording medium, method for manufacturing the same, and method for recording and/or reproducing optical information

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74

OLYMPUS CORP

6 patents

NGK SPARK PLUG CO

5 patents

FUJI XEROX CO LTD

5 patents

MITSUBISHI ELECTRIC CORP

4 patents

OMRON TATEISI ELECTRONICS CO

3 patents

PIONEER ELECTRONIC CORP

2 patents

DENSO CORP

2 patents

DUNLOP SPORTS CO LTD

2 patents

SUMITOMO RUBBER IND

2 patents

TS TECH CO LTD

2 patents

HARVARD COLLEGE

1 patent

PANASONIC CORP

1 patent

SUZUKI HIDEKI

1 patent

MITSUBISHI CHEM CORP

1 patent

FUJI PHOTO FILM CO LTD

1 patent

PIONEER CORP

1 patent

Showing the top 50 of 146 patents by PatentIndex Score.