Inventor

Tadashi Tonegawa

Inventor

Nara, JP

Overview

8→

Patents

1986–1998

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

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

G03Gprimary

G03GElectrography47%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation13%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution13%

Y02PClimate change mitigation technologies in the production or processing of goods13%

B28DWorking stone or stone-like materials7%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

PatentTitleYear

5,715,806'Multi-wire saw device for slicing a semi-conductor ingot into wafers with a cassette for housing wafers sliced therefrom, and slicing method using the same'1998 5,160,967'Image forming apparatus with layer thinning detection'1992 5,019,862'Heat control for photoreceptor'1991 4,910,111'Electrophotographic photoreceptor comprising amorphous silicon layer coated with amorphous inorganic material'1990 4,757,345'Electrophotographic system'1988 4,683,186'Doped amorphous silicon photoconductive device having a protective coating'1987 4,643,559'Electrophotographic copying method'1987 4,632,894'Photoconductive device having photoconductive layer containing hydroxyl radicals'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1998Patents assigned to SHARP KK (8)· patent assignee history

1986–1991Based in Nara, JP· patent location history

1992–1998Based in Shiki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	8	1986–1998

Locations

Location	Patents	Span
Nara, JP	6	1986–1991
Shiki, JP	2	1992–1998