Inventor

Hisashi Ohta

Inventor

Hitachinaka, JP

Overview

8→

Patents

1993–2010

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer43%

H04NPictorial communication, e.g. television36%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%

G06FElectric digital data processing7%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

PatentTitleYear

7,738,770'Recording/playback apparatus and information processing apparatus'2010 7,405,797'Flat-type light source apparatus, liquid crystal display apparatus using the same, and method of inspecting the liquid crystal display'2008 7,231,130'Magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape'2007 6,608,748'Display device'2003 6,389,217'Magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape'2002 6,038,366'Magnetic recording/reproducing apparatus for search programs recorded on magnetic tape'2000 5,761,371'magnetic recording/reproducing apparatus for searching programs recorded on magnetic tape'1998 5,255,134'Auto-tracking system for magnetic recording/reproducing apparatus'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2010Patents assigned to HITACHI LTD (6)· patent assignee history

1993Based in Ibaraki, JP· patent location history

1998–2010Based in Hitachinaka, JP· patent location history

2003Patents assigned to ADVANCED DISPLAY KK (1)· patent assignee history

2003Based in Kumamoto, JP· patent location history

2008Patents assigned to MITSUBISHI ELECTRIC CORP (1)· patent assignee history

2008Based in Suwa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	6	1993–2010
ADVANCED DISPLAY KK	1	2003
MITSUBISHI ELECTRIC CORP	1	2008

Locations

Location	Patents	Span
Hitachinaka, JP	5	1998–2010
Suwa, JP	1	2008
Kumamoto, JP	1	2003
Ibaraki, JP	1	1993