LexDanaLexDanabeta
Inventor

Tsutomu Okita

Inventor
Kanagawa, JP

Overview

93→
Patents
1980–2002
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 93 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 transducer35%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
Y10TTechnical subjects covered by former us classification27%
C08LCompositions of macromolecular compounds2%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%
G03CPhotosensitive materials for photographic purposes1%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds1%
B05CApparatus for applying fluent materials to surfaces, in general0%
B05DProcesses for applying fluent materials to surfaces, in general0%
B29CShaping or joining of plastics0%
PatentTitleYear
6,376,083'Magnetic recording medium'20026,191,184'Radiation-setting composition containing (meth)acrylic copolymers containing acid groups'20015,908,691'Magnetic recording medium having a lower layer containing a specified polyurethane binder'19995,747,157'Magnetic recording medium'19985,702,821'Magnetic recording medium comprising ferromagnetic powder and a specified polyurethane resin'19975,700,541'Magnetic recording medium'19975,612,134'Magnetic recording medium having a carbon protective layer and a fluoro-lubricant supplied from a backcoat layer'19975,607,782'Magnetic recording medium'19975,578,376'Magnetic recording medium having a magnetic layer comprising a specified ferromagnetic metal powder and a specified polyurethane binder'19965,567,524'Magnetic recording medium having a cobalt thin film magnetic layer, carbon protective layer, and fluorolubricant layer'19965,560,983'Magnetic recording medium comprising a magnetic layer and a sub layer containing an unsaturated alkyl carbonic ester'19965,525,418'Magnetic recording medium having a magnetic layer containing ferromagnetic powder and a polyurethane resin obtained from a polyolefin polyol or a polybutadiene polyol'19965,496,645'Magnetic recording medium comprising a magnetic metallic thin film and a layer containing a specified fluorine compound and a specified tetrazaindene cyclic compound or thiouracil cyclic compound'19965,492,764'Magnetic recording medium having a protective layer containing a tetrazaindene or thiouracil cyclic compound and a fluorine compound'19965,484,661'Magnetic recording medium having a polyvinyl alkyl binder resin'19965,458,979'Magnetic recording medium having a magnetic layer comprising ferromagnetic particles, polyurethane resin and polyvinylacetal resin'19955,395,696'Magnetic recording medium having a lubricant layer of a fluoroalkyl sulfo-compound'19955,258,231'Magnetic recording medium having ferromagnetic powder, a binder containing a specified vinyl chloride copolymer, polar group containing polyurethane resin and a fatty acid amide'19935,153,071'Magnetic recording medium wherein the magnetic layer has as the binder system a vinyl chloride copolymer and a polyether polyurethane resin which contains a ring structure'19925,153,063'Magnetic recording medium having a vinyl-chloride resin and a urethane resin binder system each of which resins contain three percent or less of a low molecular weight resin fraction'19925,141,808'Magnetic recording medium having two magnetic layers each containing a specified polyurethane resin'19925,126,215'Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment'19925,098,783'Magnetic recording medium having a backcoat layer comprising non-magnetic particles dispersed in a vinyl copolymer containing a dialkylaminoalkyl group'19925,091,268'Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition'19925,084,341'Magnetic recording medium comprising a polyurethane resin having a thio, thiocarboxy or dithiocarboxy group; a vinyl chloride resin containing a polar group and a hyroxy group; and a polyisocyanate compound'19925,082,733'Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound'19925,079,085'Magnetic recording medium containing a binder which is chemically bonded to crosslinked resin fine particles contained in the magnetic layer'19925,068,145'Magnetic recording medium in which the magnetic layer contains a vinyl compound having an inner salt of an alkyl amino alkyl group'19915,061,564'Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both'19915,057,373'Magnetic recording medium'19915,051,318'Magnetic recording medium containing an organic silicone compound having branched chaw saturated hydrocarbon groups'19915,049,448'Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue'19915,045,351'Process for producing a magnetic recording medium'19915,024,892'Magnetic recording medium having a binder comprising a copolymer which includes a vinyl compound having a dialkylaminoalkyl group'19914,980,199'Process for producing a magnetic recording medium'19904,976,989'Method for preparing a magnetic recording medium'19904,970,121'Magnetic recording medium'19904,959,263'Magnetic recording medium'19904,952,435'Adhesive for a base-mounted flexible magnetic disc'19904,937,098'Method for manufacturing a magnetic recording medium'19904,886,703'Magnetic recording medium'19894,880,693'Magnetic recording medium'19894,880,692'Magnetic recording medium'19894,874,636'Method for preparing magnetic recording medium'19894,873,138'Metallic thin film type magnetic recording medium'19894,837,081'Magnetic recording medium'19894,812,351'Magnetic recording medium'19894,810,435'Method of making substrate for magnetic recording medium'19894,800,458'Recording sheet bonded to a substrate in a magnetic disk'19894,788,103'Magnetic recording medium'19884,781,965'Magnetic recording medium'19884,716,077'Magnetic recording medium'19874,713,287'Magnetic recording medium'19874,711,809'Magnetic recording medium'19874,707,380'Process for preparing a magnetic recording medium'19874,699,844'Magnetic recording medium'19874,693,927'Magnetic recording medium and process for producing the same'19874,690,870'Magnetic recording medium'19874,686,149'Magnetic recording medium and method of preparing'19874,673,590'Process for preparing a magnetic recording medium'19874,671,998'Magnetic recording medium'19874,672,002'Magnetic recording medium'19874,664,965'Magnetic recording medium'19874,664,734'Process for producing a magnetic recording medium'19874,664,964'Magnetic recording medium'19874,657,817'Magnetic recording material'19874,632,878'Magnetic recording medium'19864,621,027'Magnetic recording medium'19864,619,855'Magnetic recording medium with electron beam cured magnetic layer'19864,619,868'Magnetic recording medium'19864,619,856'Magnetic recording medium'19864,581,270'Flexible magnetic disk'19864,578,299'Flexible magnetic disk sheet'19864,576,866'Magnetic recording material'19864,571,361'Antistatic plastic films'19864,560,616'Magnetic recording medium having binder cured by electron beam radiation'19854,548,833'Method for preparing a magnetic recording medium'19854,533,565'Method for surface treatment of ferromagnetic fine powder and forming a magnetic recording device'19854,520,070'Magnetic recording medium and process for producing same'19854,518,656'Magnetic recording medium and process for producing the same'19854,486,500'Magnetic recording medium'19844,482,578'Method for preparing magnetic recording media'19844,482,610'Magnetic recording medium and process for producing the same'19844,481,231'Method for production of magnetic recording media'19844,468,436'Magnetic recording material'19844,448,848'Magnetic recording medium and process for producing the same'19844,443,514'Magnetic recording medium'19844,428,974'Process for producing magnetic recording material'19844,407,853'Process for producing a magnetic recording medium'19834,405,481'Magnetic recording medium'19834,391,874'Magnetic recording medium'19834,215,030'Photographic polyester film support'19804,191,679'Photographic polyester film support'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2002Patents assigned to FUJI PHOTO FILM CO LTD (93)· patent assignee history
1980–1984Based in Fujinomiya, JP· patent location history
1984–1997Based in Kanagawa, JP· patent location history
1984–2001Based in Shizuoka, JP· patent location history
1987Patents assigned to JAPAN SYNTHETIC RUBBER CO LTD (1)· patent assignee history
1987Patents assigned to TOA GOSEI CHEM IND (1)· patent assignee history
1987–2002Based in Odawara, JP· patent location history
2001Patents assigned to FUJIFILM OLIN CO LTD CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJI PHOTO FILM CO LTD931980–2002
FUJIFILM OLIN CO LTD CO LTD12001
JAPAN SYNTHETIC RUBBER CO LTD11987
TOA GOSEI CHEM IND11987
Locations
LocationPatentsSpan
Kanagawa, JP621984–1997
Odawara, JP141987–2002
Shizuoka, JP111984–2001
Fujinomiya, JP61980–1984