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Inventor

Hideki Maruyama

Inventor
Yokohama, JP

Overview

19→
Patents
1983–2019
Patent span
Physics
Primary field (CPC G)

Patents· 19 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 transducer28%
F16JPistons9%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles6%
B60WConjoint control of vehicle sub-units of different type or different function6%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology6%
F16HGearing6%
Y02TClimate change mitigation technologies related to transportation6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
B41JTypewriters3%
B60HArrangements of heating, cooling, ventilating or other air-treating devices specially adapted for passenger or goods spaces of vehicles3%
PatentTitleYear
10,253,876Vehicle regenerative speed control device201910,246,077Vehicle regenerative speed control device201910,024,436Mechanical seal20188,422,351'Optical disk apparatus and driving method thereof'20138,305,851'Optical disk apparatus'20128,208,354'Optical disc apparatus, driving method of optical disc apparatus'20128,154,961'Optical disk apparatus and focus jump method for multilayer optical disk'20128,134,902'Optical disc drive apparatus and its control method'20128,121,000'Optical disk apparatus'20128,077,573'Optical disk apparatus and disk identification method'20117,936,652'Optical disc apparatus'20117,463,275'Light source for image writing apparatus and production method for light source'20087,093,836'Seal device'20066,962,340'Mechanical seal device'20056,172,752'Method and apparatus for simultaneously interferometrically measuring optical characteristics in a noncontact manner'20016,108,165'Rotary drum equipment and recording/reproducing equipment using the same'20005,907,162'Light-emitting device and method for manufacturing the same'1999D0306211'Combination torch and audible signal with stand'19904,407,186'Flow outlet structure for automotive air conditioner'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–2019Patents assigned to NISSAN MOTOR (3)· patent assignee history
1999–2008Based in Chikushino, JP· patent location history
2000–2013Patents assigned to HITACHI LTD (5)· patent assignee history
2000–2013Based in Yokohama, JP· patent location history
2005–2018Patents assigned to EAGLE IND CO LTD (3)· patent assignee history
2005Based in Takahashi-shi, JP· patent location history
2006–2018Based in Tokyo, JP· patent location history
2011–2013Patents assigned to MARUYAMA HIDEKI (7)· patent assignee history
2012Patents assigned to HITACHI CONSUMER ELECTRONICS (2)· patent assignee history
2019Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MARUYAMA HIDEKIself72011–2013
HITACHI LTD52000–2013
EAGLE IND CO LTD32005–2018
NISSAN MOTOR31983–2019
HITACHI CONSUMER ELECTRONICS22012
Locations
LocationPatentsSpan
Yokohama, JP92000–2013
Chikushino, JP31999–2008
Kanagawa, JP22019
Tokyo, JP22006–2018
Takahashi-shi, JP12005