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Inventor

Masaru Sakuma

Inventor
Kai, JP

Overview

32→
Patents
1987–2017
Patent span
Performing operations
Primary field (CPC B)

Patents· 32 as inventor

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

B60Tprimary
B60TVehicle brake control systems or parts thereof41%
G03GElectrography17%
Y10TTechnical subjects covered by former us classification10%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material7%
F16DCouplings for transmitting rotation7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
A24BManufacture or preparation of tobacco for smoking or chewing2%
C01BNon-metallic elements2%
C02FTreatment of water, waste water, sewage, or sludge2%
F15BSystems acting by means of fluids in general2%
PatentTitleYear
9,663,088'Booster'20179,283,943'Brake apparatus'20169,164,418'Developing device, and image forming apparatus using the same'20159,143,065'Motor drive device'20159,128,413'Developing device, and image forming apparatus using the same'20159,063,466'Developing device having an attaching unit for attaching developer and image forming apparatus including the same'20159,002,244'Image forming apparatus including developing device using toner holding member with specific surface roughness'20158,556,353'Brake device'20138,544,965'Brake system'20138,511,758'Brake system'20138,417,173'Powder recovery device and image forming apparatus'20137,491,094'Electric disk brake'20097,395,002'Image forming apparatus and output image density correction method'20087,331,826'Electric disk brake'20087,229,398'Circular-shaped metal structure and method of fabricating the same'20077,212,763'Image forming apparatus and seal portion for use in the same'20076,898,397'Circular-shaped metal structure'20056,561,001'Circular-shaped metal structure, method of fabricating the same, and apparatus for fabricating the same'20036,412,884'Solenoid-controlled valve'20026,250,436'Motor-driven brake apparatus'20016,203,118'Braking system'2001RE035547'Antilock brake control apparatus'19975,583,772'Evaluation and control method and apparatus for vehicle operation of antiskid control device'19965,560,691'Method and apparatus for anti-skid control'19965,286,100'Antiskid control apparatus'19945,251,648'Method for plumping and moisture regulating cut tobacco'19935,125,723'Antilock brake control apparatus'19925,117,361'Anti-skid brake control apparatus'19924,863,709'Calcium hypochlorite composition and process for preparation thereof'19894,855,917'Antiskid control device'19894,763,260'Antiskid control device'19884,671,579'Anti-skid control device for vehicle braking apparatus'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2002Patents assigned to TOKICO LTD (11)· patent assignee history
1987–1989Based in Kawasaki, JP· patent location history
1992–2017Patents assigned to SAKUMA MASARU (8)· patent assignee history
1992–2002Based in Yamanashi, JP· patent location history
2003–2015Based in Kanagawa, JP· patent location history
2007–2015Patents assigned to FUJI XEROX CO LTD (7)· patent assignee history
2007–2008Based in Saitama, JP· patent location history
2008–2013Patents assigned to HITACHI LTD (3)· patent assignee history
2008–2017Based in Kai, JP· patent location history
2013–2017Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOKICO LTD111987–2002
SAKUMA MASARUself81992–2017
FUJI XEROX CO LTD72007–2015
HITACHI AUTOMOTIVE SYSTEMS LTD52013–2017
HITACHI LTD32008–2013
Locations
LocationPatentsSpan
Kai, JP72008–2017
Kanagawa, JP72003–2015
Yamanashi, JP61992–2002
Kawasaki, JP31987–1989
Saitama, JP22007–2008