Inventor
Keiichiro Doi
Inventor
Izumi, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating25%
B64CAeroplanes8%
E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates8%
F16JPistons8%
G05BControl or regulating systems in general8%
G11BInformation storage based on relative movement between record carrier and transducer8%
LOCD18%
B24BMachines, devices, or processes for grinding or polishing4%
C04BLime, magnesia4%
C23CCoating metallic material4%
PatentTitleYear
9,777,838'Gasket seal, door of aircraft, seal structure for opening portion of aircraft, and aircraft'20179,617,783'Gasket seal, door of aircraft, seal structure for opening portion of aircraft, and aircraft'20175,084,744'Field effect transistor with active layer apart from guard-ring'19924,968,864'Magnetic card control microwave oven'19904,646,282'Stylus for capacity change detection type disc system'19874,467,162'Exciting arrangement for induction heating process'19844,430,542'Electromagnetic cooking apparatus'19844,410,974'Capacitance detection type record stylus and method for making the stylus'1983D0267094'Magnetic card for microwave oven'1982D0267009'Magnetic card for microwave oven'19824,351,996'Induction heating apparatus with thermistor and magnetic sensor'19824,339,646'Cooking operation announcement means of microwave oven'19824,309,585'Error alarm system in a microwave oven'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1984Patents assigned to SHARP KK (6)· patent assignee history
1982–1984Patents assigned to RICCAR CO LTD (3)· patent assignee history
1982–1984Based in Izumi, JP· patent location history
1982Based in Osaka, JP· patent location history
1983–1992Patents assigned to VICTOR COMPANY OF JAPAN (3)· patent assignee history
1983–1992Based in Yokohama, JP· patent location history
1990Patents assigned to DOI KEIICHIRO (1)· patent assignee history
2017Patents assigned to MITSUBISHI AIRCRAFT CORP (2)· patent assignee history
2017Based in Tokyo, JP· patent location history
2017Based in Aichi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHARP KK | 6 | 1982–1984 |
| RICCAR CO LTD | 3 | 1982–1984 |
| VICTOR COMPANY OF JAPAN | 3 | 1983–1992 |
| MITSUBISHI AIRCRAFT CORP | 2 | 2017 |
| DOI KEIICHIROself | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Izumi, JP | 5 | 1982–1984 |
| Yokohama, JP | 3 | 1983–1992 |
| Osaka, JP | 2 | 1982 |
| Tokyo, JP | 1 | 2017 |
| Aichi, JP | 1 | 2017 |