Inventor
Seishin Kirihara
Inventor
Hitachi, JP
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C22Cprimary
C22CAlloys18%
Y10TTechnical subjects covered by former us classification15%
F16CShafts12%
F01DNon-positive displacement machines or engines, e.g. steam turbines9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
B23KSoldering or unsoldering6%
C21DModifying the physical structure of ferrous metals6%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution6%
B23PMetal-working not otherwise provided for3%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%
PatentTitleYear
5,242,264'Machine on ground provided with heat resistant wall used for isolating from environment and heat resistant wall used therefor'19934,802,894'Method of using a structural member of anti-sulfur-attack cr-ni-al-si alloy steel for coal gasification system'19894,585,478'Heat resisting steel'19864,581,067'High-strength austenitic steel'19864,566,810'Steam turbine rotor shaft'19864,505,232'Boiler tube'19854,504,554'Rotor shaft of steam turbine'19854,497,670'Rotor shaft and manufacturing method thereof'19854,477,280'Heat resisting steel'19844,443,406'Heat-resistant and corrosion-resistant weld metal alloy and welded structure'19844,426,162'Rotor shaft'19844,414,024'Martensitic heat-resistant steel'19834,348,131'Welded structure having improved mechanical strength and process for making same'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–1993Patents assigned to HITACHI LTD (13)· patent assignee history
1982–1993Based in Hitachi, JP· patent location history
1984–1985Patents assigned to BABCOCK HITACHI KK (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 13 | 1982–1993 |
| BABCOCK HITACHI KK | 2 | 1984–1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 13 | 1982–1993 |