Inventor
Toshimi Tan
Inventor
Katsuta, JP
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Dprimary
F01DNon-positive displacement machines or engines, e.g. steam turbines27%
C21DModifying the physical structure of ferrous metals18%
C22CAlloys15%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants15%
F16CShafts9%
B23PMetal-working not otherwise provided for3%
F16DCouplings for transmitting rotation3%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%
G07CTime or attendance registers3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
6,224,334'Steam turbine, rotor shaft thereof, and heat resisting steel'20015,624,235'Steam turbine, rotor shaft thereof, and heat resisting steel'19975,569,338'Steam turbine rotor shaft thereof and heat resisting steel'19965,536,146'Combined generator system'19965,383,768'Steam turbine, rotor shaft thereof, and heat resisting steel'19955,027,268'System for administering life of plant'19914,504,554'Rotor shaft of steam turbine'19854,497,670'Rotor shaft and manufacturing method thereof'19854,426,162'Rotor shaft'19844,342,542'Moving blade of steam turbine'19824,321,012'Turbine blade fastening construction'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–2001Patents assigned to HITACHI LTD (11)· patent assignee history
1982–1985Based in Hitachi, JP· patent location history
1991–2001Based in Katsuta, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 11 | 1982–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Katsuta, JP | 6 | 1991–2001 |
| Hitachi, JP | 5 | 1982–1985 |