Inventor
Hirokazu Teraoka
Inventor
Sakai, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Cprimary
C10CWorking-up pitch, asphalt, bitumen, tar50%
D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons50%
PatentTitleYear
5,277,850'Process for producing a coil-shaped carbon fiber bundle'19945,183,603'Process for producing a coil-shaped carbon fiber bundle'19934,769,139'Apparatus for production of crystallizable carbonaceous material'19884,488,957'Method and apparatus for production of crystallizable carbonaceous material'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1993Patents assigned to KOA OIL CO LTD (3)· patent assignee history
1984–1988Based in Osaka, JP· patent location history
1993–1994Patents assigned to TANAKA PRECIOUS METAL IND (2)· patent assignee history
1993–1994Based in Sakai, JP· patent location history
1994Patents assigned to KAO OIL CO LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOA OIL CO LTD | 3 | 1984–1993 |
| TANAKA PRECIOUS METAL IND | 2 | 1993–1994 |
| KAO OIL CO LTD | 1 | 1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sakai, JP | 2 | 1993–1994 |
| Osaka, JP | 2 | 1984–1988 |