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Inventor

Eiichi Sakai

Inventor
Hachioji, JP

Overview

31→
Patents
1983–2013
Patent span
Physics
Primary field (CPC G)

Patents· 31 as inventor

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

G03Gprimary
G03GElectrography29%
F16HGearing15%
E02FDredging8%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein8%
A61MDevices for introducing media into, or onto, the body6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
Y10TTechnical subjects covered by former us classification4%
A45DHairdressing or shaving equipment2%
B60WConjoint control of vehicle sub-units of different type or different function2%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology2%
PatentTitleYear
8,554,423'Automatic transmission device for wheel loader and wheel loader'20138,423,247'Speed change control system for industrial vehicle'20138,380,408'Speed change control system for industrial vehicle'20138,290,670'Clutch control device and clutch control method'20128,262,540'Shift control device for work vehicle'20128,236,468'Organic photoreceptor, image forming apparatus, and process cartridge'20128,194,032'Image display medium, preparation method thereof'20128,137,238'Gearshift controller for industrial vehicle'20128,029,955'Electrophotographic photoreceptor and image forming method'20117,839,562'White particles for image display device'20107,813,031'Image display device'20107,692,846'Image display device'20107,103,385'Mobile satellite communication system'20066,889,805'Clutch hydraulic mechanism'20055,960,802'Pen-type chemical applicator'19995,863,687'Electrophotographic photoreceptor'19995,846,679'Electrophotographic photoreceptor'19985,800,956'Electrophotographic photoreceptor with specific interlayer'19985,798,878'Shape control apparatus for reflecting mirrors'19985,716,745'Electrophotographic photoreceptor'19985,574,543'Image forming apparatus'19965,349,426'Toner guide roller for image-forming process and apparatus applied therewith'19945,102,392'Air detector for use in infusion pump'19925,075,189'Electrophotographic photoreceptor comprising an undercoat layer containing a polyamide copolymer'19914,931,372'Polycarbonate-containing photoreceptors containing a hindered phenol compound'19904,868,078'Imaging member having an amorphous silicon surface layer'19894,859,554'Multilayer photoreceptor'19894,677,044'Multi-layered electrophotographic photosensitive member having amorphous silicon'19874,668,599'Photoreceptor comprising amorphous layer doped with atoms and/or ions of a metal'19874,563,179'Blocking condition detection device in a fluid injection system'19864,369,780'Blocking condition detection device in a medical fluid injection system'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1999Patents assigned to KONISHIROKU PHOTO IND (12)· patent assignee history
1987–1991Based in Niiza, JP· patent location history
1989–1998Based in Hachioji, JP· patent location history
1998–2006Based in Tokyo, JP· patent location history
2010–2012Patents assigned to KONICA MINOLTA BUSINESS TECH (5)· patent assignee history
2010–2012Based in Kanagawa, JP· patent location history
2012–2013Patents assigned to SAKAI EIICHI (8)· patent assignee history
2012–2013Patents assigned to HITACHI CONSTRUCTION MACHINERY (6)· patent assignee history
2012–2013Patents assigned to TANAKA TETSUJI (6)· patent assignee history
2012–2013Based in Ryugasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KONISHIROKU PHOTO IND121987–1999
SAKAI EIICHIself82012–2013
HITACHI CONSTRUCTION MACHINERY62012–2013
TANAKA TETSUJI62012–2013
KONICA MINOLTA BUSINESS TECH52010–2012
Locations
LocationPatentsSpan
Hachioji, JP71989–1998
Ryugasaki, JP62012–2013
Kanagawa, JP52010–2012
Niiza, JP41987–1991
Tokyo, JP31998–2006