Inventor
Hiromasa Hirakawa
Inventor
Hitachi, JP
Overview
10→
Patents
1982–1994
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G21Cprimary
G21CNuclear reactors43%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution43%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys4%
C23FNon-mechanical removal of metallic material from surface4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
5,304,261'Method of fabricating a channel box or other part for a nuclear reactor'19945,297,177'Fuel assembly, components thereof and method of manufacture'19945,265,139'Fuel assembly'19935,176,877'Nuclear fuel assembly and nuclear reactor core containing said assembly'19935,164,153'Control rod assembly for a boiling water reactor'19925,106,575'Nuclear fuel assemblies'19924,926,450'Fuel assembly'19904,914,679'Fuel assembly'19904,686,079'Fuel assembly'19874,318,777'Apparatus for detecting failure of the nuclear fuel rod'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1994Patents assigned to HITACHI LTD (10)· patent assignee history
1982–1994Based in Hitachi, JP· patent location history
1987–1993Patents assigned to HITACHI ENG CO LTD (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 10 | 1982–1994 |
| HITACHI ENG CO LTD | 4 | 1987–1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 10 | 1982–1994 |