P

Inventor

ONO HIROAKI

JP168 patents
⚠️ This page may combine multiple inventors who share the name “ONO HIROAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

21 patents
US5912969AJun 15, 1999

Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information

HITACHI LTD95 citations98
US6501718B1Dec 31, 2002

Disk, recording and reproduction apparatus, and recording and reproduction method

HITACHI LTD56 citations96
US5825969AOct 20, 1998

Information management apparatus for inhibiting reproduction in a video cassette recorder

HITACHI LTD30 citations96
US5719943AFeb 17, 1998

Digital information signal transmitting/receiving method and system

HITACHI LTD70 citations96
US5699370ADec 16, 1997

Information recording and reproduction apparatus to be controlled by temporal information

HITACHI LTD49 citations96
US6373799B1Apr 16, 2002

Optical disk and recording/reproduction apparatus using the same

HITACHI LTD27 citations93
US5875279AFeb 23, 1999

Subscriber terminal of an interactive communication system and control device thereof

HITACHI LTD29 citations93
US6665261B2Dec 16, 2003

Disk cartridge

HITACHI LTD15 citations92
US6657666B1Dec 2, 2003

Method and apparatus for recording image information

HITACHI LTD39 citations92
US6349087B1Feb 19, 2002

Disk cartridge with a disk holding member

HITACHI LTD15 citations92
US6765850B2Jul 20, 2004

Optical disc apparatus and information recording apparatus using the optical disc apparatus

HITACHI LTD15 citations83
US6680897B2Jan 20, 2004

Optical disk and recording/reproduction apparatus using the same

HITACHI LTD12 citations74
US6577593B2Jun 10, 2003

Disk cartridge

HITACHI LTD6 citations74
US6388831B1May 14, 2002

Apparatus and method for limiting the reproduction of main information

HITACHI LTD3 citations74
US6204985B1Mar 20, 2001

Information management apparatus

HITACHI LTD6 citations74
US6031677AFeb 29, 2000

Information management apparatus

HITACHI LTD3 citations74
US5930274AJul 27, 1999

Information recording and reproduction apparatus to be controlled by temporal information

HITACHI LTD6 citations74
US7664368B2Feb 16, 2010

Information recording/play-backing apparatus

HITACHI LTD5 citations73
US7116620B2Oct 3, 2006

System and method for controlling recording state transitions in an information recording apparatus

HITACHI LTD6 citations73
US6996046B2Feb 7, 2006

Information recording apparatus and method

HITACHI LTD7 citations73
US5130875AJul 14, 1992

Multichannel magnetic head having a plurality of head chips fixed on a common head base

HITACHI LTD16 citations72

SONY CORP

10 patents

DENSO CORP

3 patents

ONO HIROAKI

2 patents

JFE STEEL CORP

2 patents

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

1 patent

TOYO TIRE & RUBBER CO

1 patent

HITACHI MAXELL

1 patent

KOHOKU KOGYO KK

1 patent

NIPPON SOKEN

1 patent

MURATA MANUFACTURING CO

1 patent

NODA YASUO

1 patent

KACHI TADAYOSHI

1 patent

MAXELL LTD

1 patent

YAZAKI CORP

1 patent

HONDA MOTOR CO LTD

1 patent

HANAI ATSUSHI

1 patent

Showing the top 50 of 168 patents by PatentIndex Score.