Inventor
Koji Sasazawa
Inventor
Kanagawa, JP
Overview
Patents· 16 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 transducer43%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests16%
Y10TTechnical subjects covered by former us classification14%
C01GCompounds containing metals not covered by subclasses c01d or c01f11%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds11%
A63HToys, e.g. tops, dolls, hoops or building blocks3%
H04NPictorial communication, e.g. television3%
PatentTitleYear
5,370,928'Magnetic recording medium'19944,990,361'Method for producing magnetic recording medium'19914,982,302'Magnetic recording medium and method for magnetic recording and reproduction'19914,956,229'Magnetic recording medium'19904,948,626'Method for producing thin-film magnetic recording medium'19904,923,748'Magnetic recording medium'19904,876,113'Method for producing magnetic recording media'19894,267,207'Process for producing cobalt-containing ferromagnetic iron oxide powder'19814,200,680'Process for preparing magnetic iron oxide and magnetic iron oxide produced thereby'19804,179,387'Process for producing magnetic FE oxide'19794,125,474'Process for producing ferrogmagnetic iron oxide powder comprising a pre-treatment with a reducing agent'19784,069,164'Process for producing ferromagnetic powder'19784,066,565'Process for producing cobalt- and iron-containing ferromagnetic powder'19784,066,564'Process for producing cobalt- and iron-containing ferromagnetic powder by heat-treatment in the presence of an oxidizing agent'19784,015,030'Process for stabilization of ferromagnetic material and magnetic recording member'19774,002,804'Magnetic recording material'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1994Patents assigned to FUJI PHOTO FILM CO LTD (16)· patent assignee history
1977–1981Based in Odawara, JP· patent location history
1978–1994Based in Kanagawa, JP· patent location history
1991Patents assigned to JAPAN BROADCASTING CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJI PHOTO FILM CO LTD | 16 | 1977–1994 |
| JAPAN BROADCASTING CORP | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 8 | 1978–1994 |
| Odawara, JP | 8 | 1977–1981 |