Inventor
Hiroshi Sumita
Inventor
Hiroshima, JP
Overview
Patents· 10 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 transducer18%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds15%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties13%
Y10TTechnical subjects covered by former us classification13%
B82YSpecific uses or applications of nanostructures8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
C01GCompounds containing metals not covered by subclasses c01d or c01f5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
H01FMagnets5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
6,616,747'Process for producing granular hematite particles'20036,139,618'Fine yellow composite iron oxide hydroxide pigment, and paint or resin composition using the same'20006,117,540'Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom'20006,087,004'Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom'20006,027,559'Yellow iron oxide hydroxide particles and process for producing the same'20005,449,565'Magnetic iron oxide particles, a process for producing the same and a magnetic recording medium'19954,873,010'Spindle-like magnetic iron oxide particles and process for producing the same'19894,773,931'Spindle ferromagnetic alloy particles'19884,136,049'Process for treating acicular magnetite containing Co to stabilize the magnetic properties thereof'19794,136,158'Production of acicular magnetic iron oxides'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–2003Patents assigned to TODA KOGYO CORP (10)· patent assignee history
1979–2000Based in Hiroshima, JP· patent location history
2000–2003Based in Okayama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TODA KOGYO CORP | 10 | 1979–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 8 | 1979–2000 |
| Okayama, JP | 2 | 2000–2003 |