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Inventor

Akira Torisawa

Inventor
Tokyo, JP

Overview

42→
Patents
1978–2002
Patent span
Physics
Primary field (CPC G)

Patents· 42 as inventor

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

G04Cprimary
G04CElectromechanical clocks or watches27%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters10%
H04NPictorial communication, e.g. television10%
G06GAnalogue computers7%
H02KDynamo-electric machines7%
H03HImpedance networks, e.g. resonant circuits7%
H04BTransmission7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B41JTypewriters4%
G06KGraphical data reading4%
PatentTitleYear
6,459,721'Spread spectrum receiving apparatus'20026,122,068'Image forming apparatus'20006,020,672'Surface acoustic wave converter with improved frequency characteristics, surface acoustic wave device using such converter, and communication system using such device'20005,962,950'Compact surface acoustic wave apparatus, spread spectrum signal receiver using the same apparatus for reception of spread spectrum signal, and spread spectrum signal communication system using the same spread spectrum signal receiver'19995,856,997'Spread spectrum receiving apparatus'19995,815,055'Matched filter with improved synchronous characteristics, and reception device and communication system using the same'19985,760,525'Surface acoustic wave device and communication system using it'19985,754,303'Image forming apparatus with a digital modulator'19985,717,274'Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same'19985,638,191'Image forming apparatus'19975,629,781'High-speed image processing using parallel storage'19975,596,426'Image processing method and apparatus'19975,539,687'Correlator and communication system using it'19965,477,098'Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same'19955,457,487'Color image forming apparatus which times release of each of plural color image signals'19955,097,189'Recording apparatus'19925,075,609'Recording apparatus'19915,029,264'Recording apparatus'19914,972,109'Stepping motor'19904,963,808'Motor control apparatus'19904,952,859'Stepping motor'19904,928,050'Recorder'19904,794,292'Stepping motor with divided stator pole pieces'19884,445,784'Electronic timepiece'19844,382,691'Electronic watch'19834,368,990'Electronic timepiece'19834,352,172'Detection device of electronic timepiece'19824,326,278'Electronic timepiece'19824,321,521'Detection device of electronic timepiece'19824,321,519'Magnetic field detection device for electronic timepiece'19824,321,520'Electronic timepiece'19824,315,329'Load measuring device for the gear train of a timepiece'19824,312,058'Electronic watch'19824,312,059'Electronic timepiece'19824,276,626'Electronic watch'19814,272,837'Electronic timepiece with rotation detector'19814,271,496'Electronic watch'19814,241,434'Stepping motor mechanism for an electronic watch'19804,217,751'Electronic timepiece'19804,209,971'Electronic timepiece'19804,204,397'Electronic timepiece'19804,075,540'Stepping motor for timepiece'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1984Patents assigned to SEIKO INSTR & ELECTRONICS (19)· patent assignee history
1978–2000Based in Machida, JP· patent location history
1980–2002Based in Tokyo, JP· patent location history
1988–2002Patents assigned to CANON KK (23)· patent assignee history
1990Patents assigned to CANON DENSHI KK (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK231988–2002
SEIKO INSTR & ELECTRONICS191978–1984
CANON DENSHI KK11990
Locations
LocationPatentsSpan
Tokyo, JP211980–2002
Machida, JP211978–2000