Inventor
Yasuzi Sakuma
Inventor
Hitachi, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B23Kprimary
B23KSoldering or unsoldering33%
F16LPipes17%
G01MTesting static or dynamic balance of machines or structures17%
G21CNuclear reactors17%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
PatentTitleYear
4,918,283'Method of and apparatus for conducting plasma welding'19904,788,409'Method of and apparatus for automatically conducting all position plasma welding of pipes'19884,770,105'Piping travelling apparatus'19884,644,791'Moving apparatus for a hollow curved pipe-arrangement and an operating method in the pipe-arrangement by using the moving apparatus'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1990Patents assigned to HITACHI LTD (4)· patent assignee history
1987–1990Based in Hitachi, JP· patent location history
1988Patents assigned to TOKYO GAS CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 4 | 1987–1990 |
| TOKYO GAS CO LTD | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 4 | 1987–1990 |