Inventor
Hiroshi Iijima
Inventor
Tokyo, JP
Overview
Patents· 1 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%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Patents assigned to MITSUBISHI OIL CO (1)· patent assignee history
1984Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI OIL CO | 1 | 1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 1 | 1984 |