Inventor
Shozo Ishikawa
Inventor
Yokohama, JP
Overview
Patents· 40 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography50%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments25%
C07DHeterocyclic compounds7%
C07CAcyclic or carbocyclic compounds5%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h103%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%
Y10TTechnical subjects covered by former us classification3%
G11BInformation storage based on relative movement between record carrier and transducer1%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation1%
H10KOrganic electric solid-state devices1%
PatentTitleYear
7,947,598'Substrate for semiconductor device, resin-sealed semiconductor device, method for manufacturing said substrate for semiconductor device and method for manufacturing said resin-sealed semiconductor device'20117,825,514'Substrate for semiconductor device, resin-sealed semiconductor device, method for manufacturing said substrate for semiconductor device and method for manufacturing said resin-sealed semiconductor device'20104,931,371'Electrophotographic photosensitive member'19904,830,944'Function separated photosensitive member having a diphenylamine derivative disazo charge generation material'19894,788,119'Electrophotographic photosensitive member containing a disazo pigment'19884,760,003'Electrophotographic photosensitive member containing disazo compound'19884,743,523'Photosensitive member for electrophotography'19884,735,882'Trisazo photsensitive member for electrophotography'19884,702,982'Electrophotographic photosensitive member comprising disazo pigment'19874,666,810'Photosensitive member for electrophotography comprising azo pigments'19874,610,943'Electrophotographic photosensitive member contains disazo photoconductive compound'19864,554,231'Electrophotographic photosensitive member'19854,551,404'Disazo electrophotographic photosensitive member'19854,535,043'Electrophotographic photosensitive member'19854,501,808'Recording medium and process employing a photosensitive organic film'19854,500,619'Electrophotographic photosensitive member with oxadiazole containing disazo compound'19854,495,264'Electrophotographic photosensitive member comprising disazo compound'19854,487,824'Electrophotographic photosensitive member containing a halogen substituted hydrazone'19844,485,159'Laminate type electrophotographic light-sensitive material'19844,471,040'Electrophotographic disazo photosensitive member'19844,456,671'Electrophotographic photosensitive member having a photosensitive layer containing a hydrazone compound'19844,454,211'Electrophotographic photosensitive member with pyrazoline charge transport material'19844,446,217'Electrophotographic photosensitive member having a hydrazone containing layer'19844,427,753'Electrophotographic photosensitive member with disazo or trisazo compound'19844,423,129'Electrophotographic member having layer containing methylidenyl hydrazone compound'19834,420,548'Electrophotographic member with hydrazone or ketazine compounds'19834,419,428'Electrophotographic light-sensitive media having a dis-azo compound'19834,418,133'Disazo photoconductive material and electrophotographic photosensitive member having disazo pigment layer'19834,413,045'Multilayer electrophotographic photosensitive member comprises disazo charge generator layer, hydrazone transport layer'19834,399,207'Electrophotographic photosensitive member with hydrazone compound'19834,399,206'Disazo electrophotographic photosensitive member'19834,399,208'Electrophotographic photosensitive member'19834,391,889'Electrophotographic photosensitive member with benzimidazole ring containing hydrazones'19834,390,611'Electrophotographic photosensitive azo pigment containing members'19834,359,515'Disazo electrophotographic light-sensitive media'19824,359,513'Electrophotographic light-sensitive disazo compounds having diphenylacrylonitrile group'19824,356,243'Electrophotographic media with benzoxazole group containing dis-azo compound'19824,315,982'Styryl pyrazoline compounds, process for production thereof, and electrophoto graphic material comprising said compounds'19824,268,595'Electrostatic recording material and method for the production thereof'19814,097,646'Electrostatic recording material having a dielectric copolymer coated layer'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1985Patents assigned to COPYER CO (14)· patent assignee history
1978–1984Based in Tokyo, JP· patent location history
1983–1990Patents assigned to CANON KK (31)· patent assignee history
1983Patents assigned to ISHIKAWA SHOZO (1)· patent assignee history
1983Patents assigned to KATAGIRI KAZUHARU (1)· patent assignee history
1983–1985Based in Sayama, JP· patent location history
1983Based in Mitaka, JP· patent location history
1984–1990Based in Yokohama, JP· patent location history
2010–2011Patents assigned to DAINIPPON PRINTING CO LTD (2)· patent assignee history
2010–2011Based in Fujimino, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CANON KK | 31 | 1983–1990 |
| COPYER CO | 14 | 1978–1985 |
| DAINIPPON PRINTING CO LTD | 2 | 2010–2011 |
| ISHIKAWA SHOZOself | 1 | 1983 |
| KATAGIRI KAZUHARU | 1 | 1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 15 | 1984–1990 |
| Sayama, JP | 14 | 1983–1985 |
| Tokyo, JP | 8 | 1978–1984 |
| Fujimino, JP | 2 | 2010–2011 |
| Mitaka, JP | 1 | 1983 |