Inventor

Masato Ikegawa

Inventor

Ibaraki, JP

Overview

17→

Patents

1982–2017

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 17 as inventor

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

F01Cprimary

F01CRotary-piston or oscillating-piston machines or engines22%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids19%

G11BInformation storage based on relative movement between record carrier and transducer15%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g11%

B41JTypewriters7%

C23CCoating metallic material4%

C30BSingle-crystal growth4%

F25BRefrigeration machines, plants or systems4%

H01JElectric discharge tubes or discharge lamps4%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h104%

PatentTitleYear

9,636,912'Ink jet recording device'2017 8,919,934'Inkjet recording apparatus'2014 8,077,431'Apparatus and method for reducing turbulence of airflow in a hard disk drive'2011 7,929,246'Magnetic disk drive with spoiler'2011 7,869,159'Apparatus and method for reducing turbulence of airflow in a hard disk drive'2011 7,457,078'Magnetic disk apparatus with reduced disk fluttering by placing a groove in the peripheral wall of the housing'2008 7,314,522'Apparatus and method for producing single crystal'2008 6,656,752'Ion current density measuring method and instrument, and semiconductor device manufacturing method'2003 6,427,621'Plasma processing device and plasma processing method'2002 4,464,100'Scroll fluid apparatus handling compressible fluid'1984 4,443,166'Scroll fluid apparatus with an arcuate recess adjacent the stationary wrap'1984 4,441,870'Scroll member'1984 4,417,863'Scroll member assembly of scroll-type fluid machine'1983 4,396,364'Scroll fluid apparatus with crankshaft bearing located in orbiting pin force plane'1983 4,384,831'Scroll-type fluid apparatus provided with means for counteracting a moment exerted on orbiting scroll member'1983 4,365,941'Scroll compressor provided with means for pressing an orbiting scroll member against a stationary scroll member and self-cooling means'1982 4,350,479'Scrool-type fluid machine with liquid-filled force-balanced pockets'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2003Patents assigned to HITACHI LTD (10)· patent assignee history

1982–2011Based in Ibaraki, JP· patent location history

1982–1983Based in Shimoinayoshi, JP· patent location history

2002–2014Based in Tsuchiura, JP· patent location history

2008–2017Based in Tokyo, JP· patent location history

2011Patents assigned to HITACHI GLOBAL STORAGE TECH NL (3)· patent assignee history

2011Patents assigned to ABE YUKINOBU (1)· patent assignee history

2011Patents assigned to CHAN ANDRE S (1)· patent assignee history

2011Patents assigned to HENDRIKS FERDINAND (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	10	1982–2003
HITACHI GLOBAL STORAGE TECH NL	3	2011
ABE YUKINOBU	1	2011
CHAN ANDRE S	1	2011
HENDRIKS FERDINAND	1	2011

Locations

Location	Patents	Span
Ibaraki, JP	9	1982–2011
Tsuchiura, JP	3	2002–2014
Shimoinayoshi, JP	3	1982–1983
Tokyo, JP	2	2008–2017