Inventor
Hiroyuki Sawamoto
Inventor
Fukushima, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television22%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles11%
C03CChemical composition of glasses, glazes or vitreous enamels11%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general11%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof11%
H03DDemodulation or transference of modulation from one carrier to another11%
H04BTransmission11%
Y02TClimate change mitigation technologies related to transportation11%
PatentTitleYear
7,129,994'Television tuner having level of harmonics of oscillation signal suppressed low'20066,583,826'Intermediate frequency circuit in television tuner with large attenuation of audio if signal in adjacent channel'20035,657,734'Fuel evaporative-gas emission preventing apparatus'19975,088,281'Method and apparatus for determining deterioration of three-way catalysts in double air-fuel ratio sensor system'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1997Patents assigned to TOYOTA MOTOR CO LTD (2)· patent assignee history
1992Based in Susono, JP· patent location history
1997Based in Kasugai, JP· patent location history
2003–2006Patents assigned to ALPS ELECTRIC CO LTD (2)· patent assignee history
2003–2006Based in Fukushima, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ALPS ELECTRIC CO LTD | 2 | 2003–2006 |
| TOYOTA MOTOR CO LTD | 2 | 1992–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fukushima, JP | 2 | 2003–2006 |
| Kasugai, JP | 1 | 1997 |
| Susono, JP | 1 | 1992 |