Inventor

Noriyuki Ohnaka

Inventor

Katsuta, JP

Overview

15→

Patents

1990–1999

Patent span

General tagging of new technological developments

Primary field (CPC Y)

Patents· 15 as inventor

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

G01Nprimary

G01NInvestigating or analysing materials by determining their chemical or physical properties13%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution13%

Y10TTechnical subjects covered by former us classification13%

C23CCoating metallic material11%

G21CNuclear reactors11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

G11BInformation storage based on relative movement between record carrier and transducer4%

H01FMagnets4%

B82YSpecific uses or applications of nanostructures2%

C04BLime, magnesia2%

PatentTitleYear

5,901,071'Method of evaluating corrosion resistance of metal material, method of designing alloy of high corrosion resistance, method of diagnosing corroded state of metal material, and method of operating plant'1999 5,892,805'Boiling water reactor and its operating method'1999 5,729,409'Magnetic disk device having a corrosion resistant magnetoresistive head'1998 5,579,354'Method of measuring a corrosion potential, method of simulating potential characteristics of a reaction rate, and plant monitoring system adopting them'1996 5,519,330'Method and apparatus for measuring degree of corrosion of metal materials'1996 5,514,477'Corrosion-resistant laminate which consists of a metal of a single mass number deposited on a substrate'1996 5,398,268'Nuclear power plant having a water chemistry control system for a primary cooling system thereof and an operation method thereof'1995 5,316,633'Method and apparatus for measuring sensitization of structural members'1994 5,242,264'Machine on ground provided with heat resistant wall used for isolating from environment and heat resistant wall used therefor'1993 5,223,211'Zirconium based alloy plate of low irradiation growth, method of manufacturing the same, and use of the same'1993 5,221,859'Lead frame for semiconductor device'1993 5,209,645'Ceramics-coated heat resisting alloy member'1993 5,186,798'Solution quantitative analysis apparatus, quantitative analysis methods, and nuclear reactor water quality control system'1993 5,087,181'Sliding structure such as compressor or the like'1992 4,937,038'Solution quantitative analysis apparatus, quantitative analysis methods, and nuclear reactor water quality control system'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1999Patents assigned to HITACHI LTD (15)· patent assignee history

1990–1998Based in Katsuta, JP· patent location history

1993Patents assigned to TOKYO ELECTRIC POWER CO (1)· patent assignee history

1999Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	15	1990–1999
TOKYO ELECTRIC POWER CO	1	1993

Locations

Location	Patents	Span
Katsuta, JP	13	1990–1998
Hitachinaka, JP	2	1999