Inventor
Takashi Yamahata
Inventor
Koriyama, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B41Mprimary
B41MPrinting, duplicating, marking, or copying processes32%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests28%
Y10TTechnical subjects covered by former us classification28%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%
C09KMaterials for miscellaneous applications, not provided for elsewhere4%
C10GCracking hydrocarbon oils4%
PatentTitleYear
5,043,228'Heat-sensitive transferring medium of delayed sending type'19914,948,446'Heat-sensitive transferring medium of delayed sending type'19904,857,410'Multi-type heat-sensitive transferring medium'19894,689,274'Multi-type heat-sensitive transferring medium'19874,631,232'Heat-sensitive transferring recording medium'19864,567,113'Heat-sensitive transferring recording medium'19864,049,581'Method for preparing hydrocarbon conversion catalyst using acid amide solutions to impregnate a tin component'19774,004,065'Coated heat sensitive recording member'19773,983,279'Multiple heat-sensitive copying medium'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to GEN CO LTD (8)· patent assignee history
1976–1991Based in Koriyama, JP· patent location history
1977Patents assigned to TOA NENRYO KOGYO KK (1)· patent assignee history
1977Based in Ohi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN CO LTD | 8 | 1976–1991 |
| TOA NENRYO KOGYO KK | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Koriyama, JP | 8 | 1976–1991 |
| Ohi, JP | 1 | 1977 |