Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4542846 | Method of producing a multiple-wall pipe structure with anticorrosion end protection | Shigetomo Matsui, Toshio Atsuta | 1985-09-24 |
ST
Shouji Toma
Overall (All Time): #4,021,944 of 4,157,543Top 100%
1
Patents All Time