Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10940618 | Apparatus for producing microporous plastic film | Seiji Kagawa | 2021-03-09 |
| 10744665 | Apparatus for producing microporous plastic film | Seiji Kagawa | 2020-08-18 |
| 10538027 | Apparatus for producing easy-to-tear plastic film | Seiji Kagawa | 2020-01-21 |
| 10538026 | Apparatus for producing microporous plastic film | Seiji Kagawa | 2020-01-21 |
| 10283284 | Method and apparatus for producing microporous metal foil | Seiji Kagawa | 2019-05-07 |
| 9968975 | Method and apparatus for producing microporous metal foil | Seiji Kagawa | 2018-05-15 |
| 9889479 | Method for producing porous metal foil | Seiji Kagawa | 2018-02-13 |
| 9616640 | Composite film of linearly-scratched, thin metal film and plastic film, and its production apparatus | Seiji Kagawa | 2017-04-11 |
| 9238351 | Composite film of linearly-scratched, thin metal film and plastic film, and its production apparatus | Seiji Kagawa | 2016-01-19 |
| 9096013 | Apparatus for forming slant, linear easy-to-tear portions on long plastic film | Seiji Kagawa | 2015-08-04 |
| 7938998 | Easy-to-straight-tearing thermoplastic resin film and its production method and apparatus | Seiji Kagawa | 2011-05-10 |
| 5648107 | Porous film manufacturing apparatus | Seiji Kagawa | 1997-07-15 |
| 5451257 | Porous film and porous film manufacturing apparatus | Seiji Kagawa | 1995-09-19 |
| 5352108 | Porous film and porous film manufacturing apparatus | Seiji Kagawa | 1994-10-04 |