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Inventor

Yasuhiro Katoh

Inventor
Hitachinaka, JP

Overview

19→
Patents
1986–2006
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 19 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F02Cprimary
F02CGas-turbine plants29%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution24%
G11BInformation storage based on relative movement between record carrier and transducer12%
C23CCoating metallic material6%
F04DNon-positive-displacement pumps6%
H01JElectric discharge tubes or discharge lamps6%
H03KPulse technique6%
F01DNon-positive displacement machines or engines, e.g. steam turbines3%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants3%
G01RMeasuring electric variables3%
PatentTitleYear
RE039092'Gas turbine with water injection'20067,040,083'Gas turbine having water injection unit'2006RE038831'Gas turbine having water spray injection control'20056,779,332'Gas turbine'20046,711,888'Gas turbine'20046,705,074'Gas turbine with water injection'20046,568,168'Gas turbine having water spray injection control'20036,568,167'Gas turbine having water droplet injector'20036,530,210'Gas turbine'20036,260,350'Gas turbine'20015,586,857'Rotating stall prevention system for compressor'19965,554,000'Blade profile for axial flow compressor'19965,352,489'Method for manufacturing a rotary anode for X-ray tube'19945,259,015'Rotary anode for X-ray tube and method for manufacturing the same'19935,008,761'Readout circuit in magnetic recording device'19914,907,100'Readout circuit in magnetic recording device'19904,755,891'Circuit for processing waveform of reproduced signal in magnetic reproducing apparatus'19884,716,306'Circuit for detecting variation of resistance of a variable-resistance element'19874,600,965'Current driving circuit'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2006Patents assigned to HITACHI LTD (17)· patent assignee history
1986Based in Nishitama-gun, JP· patent location history
1987–1994Based in Tokyo, JP· patent location history
1993–1994Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (2)· patent assignee history
1993–1994Patents assigned to TOKYO TUNGSTEN KK (2)· patent assignee history
1996Based in Hitachi, JP· patent location history
2001–2006Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD171986–2006
SUMITOMO ELECTRIC INDUSTRIES21993–1994
TOKYO TUNGSTEN KK21993–1994
Locations
LocationPatentsSpan
Hitachinaka, JP102001–2006
Tokyo, JP61987–1994
Hitachi, JP21996
Nishitama-gun, JP11986