Inventor
Eizo Suyama
Inventor
Tokyo, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Nprimary
F01NGas-flow silencers or exhaust apparatus for machines or engines in general52%
F16LPipes24%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
B41BMachines or accessories for making, setting, or distributing type5%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
6,151,893'Flexible tube for automobile exhaust systems'20006,080,371'Catalytic converter and honeycomb metallic catalyst bed unit therefor'20005,967,193'Flexible pipe unit for use in exhaust pipe line of automotive engine'19995,915,677'Circular plate spring'19995,909,903'Coupling structure for coupling two pipes'19995,901,988'Structure for coupling pipe with breeches pipe'19995,817,991'Connecting structure for connecting holding bracket to muffler'19984,796,694'Cooling fin for heat exchanger'19894,360,076'Muffler'19824,235,304'Muffler'19804,132,286'Muffler'19794,122,914'Muffler'19784,014,031'Electrophotographic typesetting method and apparatus therefor'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Patents assigned to SAKATA SHOKAI LTD (1)· patent assignee history
1977Based in Miura, JP· patent location history
1978–1989Patents assigned to NIHON RADIATOR CO (4)· patent assignee history
1978–1982Based in Mitaka, JP· patent location history
1982Patents assigned to NIHON RAJIEETA KABUSHIKI KAISH (1)· patent assignee history
1989–2000Based in Tokyo, JP· patent location history
1998–2000Patents assigned to CALSONIC CORP (7)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CALSONIC CORP | 7 | 1998–2000 |
| NIHON RADIATOR CO | 4 | 1978–1989 |
| NIHON RAJIEETA KABUSHIKI KAISH | 1 | 1982 |
| SAKATA SHOKAI LTD | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 8 | 1989–2000 |
| Mitaka, JP | 4 | 1978–1982 |
| Miura, JP | 1 | 1977 |