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Inventor

Masatoshi Ichikawa

Inventor
Yokohama, JP

Overview

15→
Patents
1991–2020
Patent span
Physics
Primary field (CPC G)

Patents· 15 as inventor

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

G06Fprimary
G06FElectric digital data processing30%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy17%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
H04LTransmission of digital information, e.g. telegraphic communication13%
G11BInformation storage based on relative movement between record carrier and transducer9%
B24BMachines, devices, or processes for grinding or polishing4%
C01BNon-metallic elements4%
H01JElectric discharge tubes or discharge lamps4%
PatentTitleYear
10,790,531Collector plate and redox flow battery202010,727,498Redox flow battery electrode, and redox flow battery202010,707,514Redox flow battery202010,680,248Electrode material, electrode of redox flow battery, and redox flow battery202010,008,232Recording medium, method of manufacturing fullerene thin film, recording reproducing apparatus, information recording method, and information reading method20187,657,794'Data storage device and error recovery method'20107,552,209'Computer system managing an access to a storage system'20097,370,104'Computer system managing an access to a storage system'20087,206,832'Method and system of managing an access to a storage system in a computer system'20077,082,462'Method and system of managing an access to a private logical unit of a storage system'20066,484,229'Magnetic disk apparatus'20026,462,466'Color cathode ray tube with small neck diameter and large stem pin circle having sufficient number of conductive lead pin segments'20026,113,461'Grinding method utilizing grinding sharpness of grinding element'20006,094,728'Independent error detection method/apparatus for a disk controller, and a disk controller device'20004,997,539'Method and apparatus for producing a magnetic recording medium'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to MITSUBISHI CHEM IND (1)· patent assignee history
2000–2009Patents assigned to HITACHI LTD (6)· patent assignee history
2000Patents assigned to NTN TOYO BEARING CO LTD (1)· patent assignee history
2000–2009Based in Yokohama, JP· patent location history
2002Based in Gyoda, JP· patent location history
2010Patents assigned to HITACHI GLOBAL STORAGE TECH (1)· patent assignee history
2010Based in Kanagawa, JP· patent location history
2018–2020Patents assigned to SHOWA DENKO KK (5)· patent assignee history
2018–2020Based in Tokyo, JP· patent location history
2020Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD62000–2009
SHOWA DENKO KK52018–2020
HITACHI GLOBAL STORAGE TECH12010
MITSUBISHI CHEM IND11991
NTN TOYO BEARING CO LTD12000
Locations
LocationPatentsSpan
Yokohama, JP62000–2009
Chiba, JP32020
Tokyo, JP22018–2020
Kanagawa, JP12010
Gyoda, JP12002