Inventor

Yoshihiro Tsukamura

Inventor

Kanagawa, JP

Overview

1982–2009

Patent span

Physics

Primary field (CPC G)

Patents· 15 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 transducer26%

B41JTypewriters13%

G06FElectric digital data processing9%

G06VImage or video recognition or understanding9%

H01JElectric discharge tubes or discharge lamps9%

H04NPictorial communication, e.g. television9%

Y10TTechnical subjects covered by former us classification9%

D05BSewing4%

G07FCoin-freed or like apparatus4%

H04LTransmission of digital information, e.g. telegraphic communication4%

PatentTitleYear

7,516,324'Information processing system, information management apparatus, and information processing apparatus'2009 7,020,283'Random number generation apparatus and random number generation method'2006 6,963,660'Fingerprint collating device and fingerprint collating method'2005 6,941,462'Authentication system, fingerprint identification unit, and authentication method'2005 5,450,381'Magneto-optical recording utilizing signal phase adjustment'1995 5,157,642'Optical disc recording/reproduction apparatus with improved track seeking'1992 4,925,717'Disk-shaped recording medium and disk apparatus'1990 4,907,215'Integral optical recording of product code in data areas'1990 4,660,189'Optical disk player having reduced laser output during track changes'1987 4,639,907'Magneto-optical apparatus'1987 4,455,579'Apparatus for producing a color picture on recording paper'1984 4,420,268'Printing apparatus and tape clamp therefor'1983 4,378,566'Apparatus for producing a color picture on recording paper'1983 4,349,767'Cathode ray tube resistance of ruthenium oxide and glass containing alumina powder'1982 4,333,034'Grid structure for color cathode ray tube'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2009Patents assigned to SONY CORP (15)· patent assignee history

1982–1984Based in Kawasaki, JP· patent location history

1982Based in Tokyo, JP· patent location history

1987–2009Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONY CORP	15	1982–2009

Locations

Location	Patents	Span
Kanagawa, JP	10	1987–2009
Kawasaki, JP	4	1982–1984
Tokyo, JP	1	1982