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Inventor

Hiroshi Yasuoka

Inventor
Kokubunji, JP

Overview

11→
Patents
1991–2012
Patent span
Physics
Primary field (CPC G)

Patents· 11 as inventor

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

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer56%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
B01DSeparation6%
C07CAcyclic or carbocyclic compounds6%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys6%
C23CCoating metallic material6%
G06FElectric digital data processing6%
PatentTitleYear
8,128,731'Method for separating and enriching isotope material, multistage rotor, and apparatus for separating and enriching isotope material'20127,282,610'Method of producing aromatic amine compound having alkylthio group'20075,574,881'High capacity data storage method and system using independently controlled heads and circuitry for monitoring access frequency of data records'19965,404,348'Method for recording and reproducing information using at least two energy beams'19955,257,256'Recording waveform for mark-length modulation optical recording'19935,235,591'Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium'19935,109,374'Small-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording medium'19925,084,857'Information recording method using a modulated recording beam at high, intermediate and low power levels'19925,038,338'Recording waveform for mark-length modulation optical recording'19914,984,231'Optical information phase change recording medium having double protective layer'19914,982,396'Information recording medium and apparatus using reversible phase change'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1996Patents assigned to HITACHI LTD (9)· patent assignee history
1991–1995Based in Kokubunji, JP· patent location history
1992–1996Based in Fujisawa, JP· patent location history
2007Patents assigned to FUJIFILM CORP (1)· patent assignee history
2007Based in Odawara, JP· patent location history
2012Patents assigned to HUANG XINSHENG (1)· patent assignee history
2012Patents assigned to IGUCHI YUSUKE (1)· patent assignee history
2012Patents assigned to MARUWA ELECTRONIC INC (1)· patent assignee history
2012Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD91991–1996
FUJIFILM CORP12007
HUANG XINSHENG12012
IGUCHI YUSUKE12012
MARUWA ELECTRONIC INC12012
Locations
LocationPatentsSpan
Kokubunji, JP51991–1995
Fujisawa, JP41992–1996
Ibaraki, JP12012
Odawara, JP12007