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Inventor

Yoshio Kawakami

Inventor
Osaka, JP

Overview

43→
Patents
1981–2016
Patent span
Physics
Primary field (CPC G)

Patents· 43 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 transducer34%
H04NPictorial communication, e.g. television22%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification8%
B24BMachines, devices, or processes for grinding or polishing6%
B65BMachines, apparatus or devices for, or methods of, packaging articles or materials2%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
G06FElectric digital data processing2%
H04LTransmission of digital information, e.g. telegraphic communication2%
B41JTypewriters1%
PatentTitleYear
9,264,757'Service executing apparatus'20168,571,385'Recording and reproduction apparatus and recording and reproduction method'20138,452,165'Recording medium, playback apparatus, method and program'20138,397,078'Method for authenticating and executing a program'20138,379,667'Service executing apparatus'20138,380,042'Reproduction device, reproduction method, and program'20138,335,424'Recording medium, playback apparatus, method and program'20128,331,773'Recording medium, playback apparatus, method and program'20128,301,017'Recording medium, playback apparatus, method and program'20128,280,232'Recording medium, playback apparatus, method and program'20128,275,234'Recording medium, playback apparatus, method and program'20128,146,128'Download execution apparatus'20128,037,317'Method for authenticating and executing a program'20118,037,456'Program execution device'20118,016,645'Chamfering apparatus for chamfering glass substrates'20118,002,923'Method of manufacturing glass substrate'20117,894,710'Recording and reproduction apparatus and recording and reproduction method'20117,806,751'Method of manufacturing disk substrate'20107,798,889'Chamfering apparatus for chamfering glass substrates'20107,760,757'Service executing apparatus'20107,654,884'Method of polishing end surfaces of a substrate for a recording medium by a grain flow processing method'20107,600,045'Information processor'20096,876,434'Motion picture reproducing middleware selecting/executing device and method'20056,178,385'Method and apparatus for checking the wrapping state of a roll'20015,935,361'Web splicing preparation method and apparatus'19995,887,076'Method of and apparatus for checking the wrapping state of a roll'19995,575,577'Recording apparatus having position detecting device'19965,567,502'Magnetic recording medium having a magnetic layer containing abrasive particles'19965,478,416'Magnetic alloy'19955,479,298'ND filter and aperture device using the same'19954,734,666'Microwave apparatus having coaxial waveguide partitioned by vacuum-tight dielectric plate'19884,713,278'Magnetic recording medium'19874,673,622'Magnetic recording medium'19874,524,108'Magnetic recording medium'19854,452,863'Magnetic recording medium'19844,423,452'Magnetic recording medium'19834,422,119'Leader tape'19834,413,295'Magnetic head'19834,376,519'Lubricant sheet for magnetic tape cassette'19834,368,496'Magnetic head'19834,363,059'Magnetic tape cassette'19824,338,367'Magnetic recording tape'19824,304,807'Magnetic recording tape'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1987Patents assigned to TDK ELECTRONICS CO LTD (7)· patent assignee history
1982–1983Based in Tokyo, JP· patent location history
1983–2013Patents assigned to KAWAKAMI YOSHIO (12)· patent assignee history
1983–1995Based in Chichibu, JP· patent location history
1995–2011Based in Saitama, JP· patent location history
2005–2010Based in Kadoma, JP· patent location history
2009–2016Patents assigned to PANASONIC CORP (17)· patent assignee history
2011–2016Based in Osaka, JP· patent location history
2012–2013Patents assigned to IKEDA WATARU (6)· patent assignee history
2012–2013Patents assigned to MCCROSSAN JOSEPH (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PANASONIC CORP172009–2016
KAWAKAMI YOSHIOself121983–2013
TDK ELECTRONICS CO LTD71981–1987
IKEDA WATARU62012–2013
MCCROSSAN JOSEPH62012–2013
Locations
LocationPatentsSpan
Osaka, JP152011–2016
Saitama, JP61995–2011
Tokyo, JP41982–1983
Kadoma, JP32005–2010
Chichibu, JP31983–1995