Inventor

Takayuki Hayakawa

Inventor

Hachioji, JP

Overview

8→

Patents

1980–2001

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

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

A61Bprimary

A61BDiagnosis13%

G01TMeasurement of nuclear or x-radiation13%

G06FElectric digital data processing13%

H01JElectric discharge tubes or discharge lamps13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

G06TImage data processing or generation, in general7%

G11BInformation storage based on relative movement between record carrier and transducer7%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation7%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution7%

Y10TTechnical subjects covered by former us classification7%

PatentTitleYear

6,289,359'File managing method'2001 5,485,598'Redundant disk array (raid) system utilizing separate cache memories for the host system and the check data'1996 4,982,096'Multi-element radiation detector'1991 4,640,729'Method of producing ionization chamber detector'1987 4,625,117'Multi-cell radiation detector'1986 4,607,164'Radiation detecting apparatus'1986 4,211,926'Tomographic imaging system'1980 4,212,062'Tomographic imaging system'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1991Patents assigned to HITACHI MEDICAL CORP (6)· patent assignee history

1980–1991Based in Hachioji, JP· patent location history

1986–1987Patents assigned to HITACHI LTD (3)· patent assignee history

1996–2001Patents assigned to MITSUBISHI ELECTRIC CORP (2)· patent assignee history

1996Based in Kamakura, JP· patent location history

2001Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI MEDICAL CORP	6	1980–1991
HITACHI LTD	3	1986–1987
MITSUBISHI ELECTRIC CORP	2	1996–2001

Locations

Location	Patents	Span
Hachioji, JP	6	1980–1991
Tokyo, JP	1	2001
Kamakura, JP	1	1996