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Inventor

Haruyoshi Yamada

Inventor
Shiojiri, JP

Overview

20→
Patents
1979–2016
Patent span
Physics
Primary field (CPC G)

Patents· 20 as inventor

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

G03Bprimary
G03BApparatus or arrangements for taking photographs or for projecting or viewing them47%
H04NPictorial communication, e.g. television33%
G04CElectromechanical clocks or watches7%
B41JTypewriters3%
F16LPipes3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
G04BMechanically-driven clocks or watches3%
PatentTitleYear
9,258,538'Projector and control method for projector'20169,039,200'Projector and control method for projector'20157,280,157'Image display device'20077,215,470'Rear projector'20077,066,610'Rear projector'20066,902,275'Light source and projector'20056,851,810'Rear projector and producing method thereof'20056,814,449'Rear projector'20046,814,446'Rear projector'20046,805,446'Rear projector'20046,746,125'Projector'20046,698,899'Light source and projector'20046,335,808'Image reading apparatus'20025,933,222'Film scanner'19995,721,993'Data projection device for cameras and a camera utilizing the device'19985,721,990'Image formation apparatus'19985,630,177'Data print unit for non-removable-film camera'19975,600,387'Data print unit for non-removable-film camera'19974,335,454'Gear train mechanism for a timepiece'19824,177,631'Small-sized quartz crystal wristwatch'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1982Patents assigned to SUWA SEIKOSHA KK (2)· patent assignee history
1979–1999Based in Suwa, JP· patent location history
1997–2016Patents assigned to SEIKO EPSON CORP (18)· patent assignee history
1998Based in Epson, GB· patent location history
1999–2002Patents assigned to KONISHIROKU PHOTO IND (2)· patent assignee history
2002Based in Nagano, JP· patent location history
2004–2016Based in Shiojiri, JP· patent location history
2004Based in Suwan, JP· patent location history
2015Patents assigned to KATAHIRA TORU (1)· patent assignee history
2015Patents assigned to MATSUYAMA KATSUHIRO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEIKO EPSON CORP181997–2016
KONISHIROKU PHOTO IND21999–2002
SUWA SEIKOSHA KK21979–1982
KATAHIRA TORU12015
MATSUYAMA KATSUHIRO12015
Locations
LocationPatentsSpan
Shiojiri, JP112004–2016
Suwa, JP61979–1999
Suwan, JP12004
Nagano, JP12002
Epson, GB11998