Inventor
Heikichi Kuwahara
Inventor
Ibaraki, JP
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F28Fprimary
F28FDetails of heat-exchange and heat-transfer apparatus, of general application21%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1014%
Y10TTechnical subjects covered by former us classification11%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling9%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact9%
H05KPrinted circuits7%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material5%
B21JForging5%
B01DSeparation4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
6,021,040'Power storage device and power converter using same'20005,925,947'Totally-enclosed type motor'19995,925,929'Cooling apparatus for electronic elements'19995,793,611'Cooling device with thermally separated electronic parts on a monolithic substrate'19985,793,106'Semiconductor device'19985,651,414'Heat-pipe type cooling apparatus'19975,504,924'Cooling system of electronic computer using flexible members in contact with semiconductor devices on boards'19965,365,402'Cooling apparatus of electronic device'19945,270,572'Liquid impingement cooling module for semiconductor devices'19935,021,924'Semiconductor cooling device'19914,977,444'Semiconductor cooling apparatus'19904,794,775'Method of producing a heat transfer tube for single-phase flow'19894,715,436'Construction of a heat transfer wall of a heat transfer pipe'19874,690,211'Heat transfer tube for single phase flow'19874,653,163'Method for producing a heat transfer wall for vaporizing liquids'19874,606,405'Heat transfer wall'19864,602,681'Heat transfer surface with multiple layers'19864,585,055'Liquid film evaporation type heat exchanger'19864,561,497'Heat transfer surface and manufacturing method for same'19854,195,688'Heat-transfer wall for condensation and method of manufacturing the same'19804,194,384'Method of manufacturing heat-transfer wall for vapor condensation'19804,060,125'Heat transfer wall for boiling liquids'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1997Patents assigned to HITACHI CABLE (10)· patent assignee history
1977–1980Based in Kashiwa, JP· patent location history
1980–2000Patents assigned to HITACHI LTD (20)· patent assignee history
1985–1996Based in Ibaraki, JP· patent location history
1986Patents assigned to HITACHI LTD & HITACHI CABLE LT (1)· patent assignee history
1997–2000Based in Tsuchiura, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 20 | 1980–2000 |
| HITACHI CABLE | 10 | 1977–1997 |
| HITACHI LTD & HITACHI CABLE LT | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 13 | 1985–1996 |
| Tsuchiura, JP | 6 | 1997–2000 |
| Kashiwa, JP | 3 | 1977–1980 |