Inventor
Yoshinao Okumoto
Inventor
Kudamatsu, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B61Dprimary
B61DBody details or kinds of railway vehicles31%
B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles23%
Y02TClimate change mitigation technologies related to transportation23%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
F25BRefrigeration machines, plants or systems8%
PatentTitleYear
5,685,229'Railway car body structures and method of making them'19975,433,151'Railway car body structures and methods of making them using welded honeycomb panels connected in an edge to edge relation'19954,982,583'Air conditioner for railway vehicles'19914,905,478'Air conditioner for railway vehicles'19904,870,833'Car air conditioning apparatus and controlling method therefor'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1997Patents assigned to HITACHI LTD (5)· patent assignee history
1989–1997Based in Kudamatsu, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 5 | 1989–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kudamatsu, JP | 5 | 1989–1997 |