Inventor

Yasushi Matsumoto

Inventor

Tokyo, JP

Overview

24→

Patents

1979–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 24 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 transducer20%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

Y10TTechnical subjects covered by former us classification9%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters7%

LOC147%

B23DPlaning4%

B24BMachines, devices, or processes for grinding or polishing4%

C23CCoating metallic material4%

H04NPictorial communication, e.g. television4%

B23BTurning2%

PatentTitleYear

9,654,031'Power system, power converter controlling apparatus, and electric vehicle having the power system'2017 9,524,905'Nitrided tungsten via'2016 8,677,986'Electrodeposited wire tool and manufacturing method thereof'2014 7,883,775'Diamond film coated tool and process for producing the same'2011 D0548777'Printer'2007 7,180,259'Driving apparatus for driving multiple induction motors'2007 D0520558'Printer'2006 D0487089'Image scanner apparatus'2004 6,206,717'Connector'2001 6,115,332'Apparatus for relocating, grouping and housing a plurality of recording media based on their recording medium-related information'2000 6,043,617'Variable speed driving apparatus for induction machines'2000 6,010,072'Hand scanner movable over a document without meandering'2000 5,955,212'Superhard film-coated member and method of manufacturing the same'1999 5,852,686'Manually operable document reading device for an image forming apparatus'1998 5,732,059'Synchronous dubbing system and method thereof'1998 5,671,705'Control system for two opposed solenoid-type electromagnetic valve'1997 5,319,487'Infrared data transmission-reception system'1994 4,503,471'Control arrangement for electronic appliance'1985 4,176,378'Signal pickup arm lifting/lowering and groove skipper apparatus'1979 4,167,764'Mode changing apparatus in a tape recorder'1979 4,165,560'Method for manufacturing a diamond stylus for video disc players'1979 4,164,756'Disc record groove skipper'1979 4,164,755'Video disc pickup apparatus'1979 4,162,511'Velocity correction system for video disc player'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to RCA CORP (5)· patent assignee history

1979–2000Patents assigned to SONY CORP (5)· patent assignee history

1979Based in Narashino, JP· patent location history

1979–1985Based in Yokohama, JP· patent location history

1994–2000Based in Kanagawa, JP· patent location history

2000–2017Patents assigned to FUJI ELECTRIC CO LTD (2)· patent assignee history

2000–2007Based in Tokyo, JP· patent location history

2001–2016Based in Yokkaichi, JP· patent location history

2004–2007Patents assigned to CANON KK (3)· patent assignee history

2011–2014Patents assigned to ALMT CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RCA CORP	5	1979
SONY CORP	5	1979–2000
CANON KK	3	2004–2007
ALMT CORP	2	2011–2014
FUJI ELECTRIC CO LTD	2	2000–2017

Locations

Location	Patents	Span
Tokyo, JP	5	2000–2007
Narashino, JP	5	1979
Kanagawa, JP	3	1994–2000
Yokkaichi, JP	2	2001–2016
Yokohama, JP	2	1979–1985