Inventor
Michio Kawai
Inventor
Yotsukaido, JP
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus31%
G01SRadio direction-finding15%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them8%
G03GElectrography8%
C11DDetergent compositions4%
F02NStarting of combustion engines4%
G11BInformation storage based on relative movement between record carrier and transducer4%
H03MCoding4%
PatentTitleYear
6,255,436'Aromatic polycarbonate'20016,187,896'Aromatic polycarbonate composition'20015,831,963'Optical recording medium having zones wherein the number of sectors per track is constant and method of injection-molding the same'19985,681,879'Flame-retardant polyester resin composition'19975,614,984'Distance measuring device'19975,610,680'Distance measuring apparatus for a camera'19975,389,996'Distance measuring device for a camera'19955,378,567'Polycarbonate binder resin and electrophotographic photoconductor containing the same'19955,371,691'Device for correcting characteristic errors of a camera'19945,327,070'Power supply circuit for driving a light emitting element'19945,292,607'Electrophotographic photoreceptor containing polycarbonate resin as a binder and method for preparation thereof'19945,146,262'Auto focus camera'19925,128,529'Autofocusing device with improved distance focusing accuracy'19925,097,262'Analog-to-digital converter for camera'19925,008,695'Rangefinder for camera'19914,954,861'Method of driving multiple flash rangefinder'19904,929,977'Flash photography changeover device'19904,794,158'Transparent copolyamide from bis(3-methyl-4-amino-cyclohexyl)methane'19884,277,378'Detergent compositions containing partially neutralized alkyl or alkenyl succinic acid'19814,117,821'Engine starting system'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1998Based in Yokohama, JP· patent location history
1981Patents assigned to KAO CORP (1)· patent assignee history
1988–1995Patents assigned to MITSUBISHI CHEM IND (3)· patent assignee history
1988Based in Amherst, MA, US· patent location history
1990–1997Patents assigned to SEIKOSHA KK (10)· patent assignee history
1990–1997Based in Chiba, JP· patent location history
1992–1997Based in Yotsukaido, JP· patent location history
1994–2001Based in Tokyo, JP· patent location history
1997–2001Patents assigned to MITSUBISHI CHEM CORP (4)· patent assignee history
2001Patents assigned to MITSUBISHI GAS CHEMICAL CO (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEIKOSHA KK | 10 | 1990–1997 |
| MITSUBISHI CHEM CORP | 4 | 1997–2001 |
| MITSUBISHI CHEM IND | 3 | 1988–1995 |
| MITSUBISHI GAS CHEMICAL CO | 2 | 2001 |
| KAO CORP | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yotsukaido, JP | 6 | 1992–1997 |
| Yokohama, JP | 5 | 1978–1998 |
| Chiba, JP | 4 | 1990–1997 |
| Tokyo, JP | 3 | 1994–2001 |
| Amherst, Massachusetts, US | 1 | 1988 |