Inventor

Eiji Yamakawa

Inventor

Sanda, JP

Overview

28→

Patents

1983–2020

Patent span

Physics

Primary field (CPC G)

Patents· 28 as inventor

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

G09Gprimary

G09GArrangements or circuits for control of indicating devices using static means to present variable information22%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them14%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein12%

H04NPictorial communication, e.g. television10%

G02BOptical elements, systems or apparatus8%

G04GElectronic time-pieces8%

B41JTypewriters4%

G04BMechanically-driven clocks or watches4%

B41MPrinting, duplicating, marking, or copying processes2%

G04CElectromechanical clocks or watches2%

PatentTitleYear

10,847,104Dot matrix display device and time display device2020 10,824,117Electronic device, electronic timepiece, display control method, and storage medium2020 10,783,845Liquid crystal control circuit, electronic timepiece, and liquid crystal control method2020 9,523,960'Illumination device, display apparatus, and timepiece'2016 9,423,774'Electronic timepiece including light emitting section'2016 8,971,155'Radio wave timepiece'2015 7,218,299'Liquid crystal display apparatus'2007 7,145,538'Liquid crystal display device and method for driving a liquid crystal display'2006 7,038,648'Method and a device for driving a liquid crystal display, and a liquid crystal display apparatus'2006 7,019,737'Liquid crystal display device, portable electronic device and driving method thereof'2006 6,954,195'Liquid crystal display device having a liquid crystal display driven by interlace scanning and/or sequential scanning'2005 6,927,765'Liquid crystal display device and driving method thereof'2005 6,888,522'Information display apparatus'2005 6,697,039'Information displaying apparatus'2004 6,633,319'Image recording apparatus'2003 6,552,756'Recording method and recording device using a heat reversible recording medium'2003 6,489,983'Image recording method and image recording apparatus using the same'2002 6,414,666'Liquid crystal display device and method of driving a liquid crystal display element'2002 6,243,259'Electronic member and electronic device'2001 6,215,960'Camera with camera-shake detection apparatus'2001 5,420,661'Camera with camera-shake detection apparatus'1995 5,365,304'Camera with camera-shake detection apparatus'1994 5,353,091'Camera having blurring correction apparatus'1994 5,270,767'Camera with camera-shake detection apparatus'1993 5,220,375'Camera having blurring correction apparatus'1993 5,218,442'Camera with camera-shake detection apparatus'1993 4,496,834'Focus detecting photoelectric device and focus detecting system'1985 4,415,246'Focus detecting device'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1995Patents assigned to MINOLTA CAMERA KK (8)· patent assignee history

1983–1985Based in Sakai, JP· patent location history

1993–1995Based in Toyonaka, JP· patent location history

1993–1994Based in Osaka, JP· patent location history

2001–2007Patents assigned to MINOLTA CO LTD (13)· patent assignee history

2001–2020Patents assigned to CASIO COMPUTER CO LTD (7)· patent assignee history

2002–2007Based in Sanda, JP· patent location history

2015Patents assigned to SANO TAKASHI (1)· patent assignee history

2015–2020Based in Tama, JP· patent location history

2020Patents assigned to KYOCERA CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MINOLTA CO LTD	13	2001–2007
MINOLTA CAMERA KK	8	1983–1995
CASIO COMPUTER CO LTD	7	2001–2020
KYOCERA CORP	1	2020
SANO TAKASHI	1	2015

Locations

Location	Patents	Span
Sanda, JP	12	2002–2007
Tama, JP	5	2015–2020
Toyonaka, JP	4	1993–1995
Osaka, JP	2	1993–1994
Sakai, JP	2	1983–1985