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Inventor

Ryoichi Ishikawa

Inventor
Kyoto, JP

Overview

13→
Patents
1978–2020
Patent span
Performing operations
Primary field (CPC B)

Patents· 13 as inventor

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

B22Fprimary
B22FWorking metallic powder15%
G11BInformation storage based on relative movement between record carrier and transducer15%
B62DMotor vehicles10%
C08LCompositions of macromolecular compounds10%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%
C22CAlloys5%
G02BOptical elements, systems or apparatus5%
G03GElectrography5%
PatentTitleYear
10,712,557Head-up display device20207,813,229'Gain setting method for optical disk reproducing apparatus'20107,646,689'Disk discriminating method and disk discriminating apparatus'20107,410,523'Foaming agent for manufacturing a foamed or porous metal'20087,260,030'Optical disk apparatus and pickup control unit/method'20077,189,276'Foamed/porous metal and method of manufacturing the same'20077,141,206'Method of manufacturing closed section structure filled with foam and closed section structure manufactured by the same'20067,114,765'Automobile hood'20065,913,090'Image forming apparatus service system'19994,528,346'Resin composition'19854,452,733'Equipment for volume-reducing treatment of radioactive waste'19844,105,622'Process for the preparation of flame retardant thermoplastic resin compositions'19784,085,086'Process for preparing flame retardant thermoplastic polyesters'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1985Patents assigned to DAINIPPON INK & CHEMICALS (3)· patent assignee history
1978–1985Based in Takaishi, JP· patent location history
1984Patents assigned to HITACHI LTD (1)· patent assignee history
2006–2008Patents assigned to HONDA MOTOR CO LTD (4)· patent assignee history
2006–2008Based in Saitama, JP· patent location history
2006–2007Based in Wako, JP· patent location history
2007Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (1)· patent assignee history
2007–2010Based in Kyoto, JP· patent location history
2010Patents assigned to PANASONIC CORP (2)· patent assignee history
2020Based in Niigata, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HONDA MOTOR CO LTD42006–2008
DAINIPPON INK & CHEMICALS31978–1985
PANASONIC CORP22010
HITACHI LTD11984
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12007
Locations
LocationPatentsSpan
Kyoto, JP32007–2010
Saitama, JP22006–2008
Wako, JP22006–2007
Takaishi, JP21978–1985
Niigata, JP12020