Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479143 | Heat-meltable fluororesin fibers | Katsutoshi Yamamoto, Jun Asano | 2002-11-12 |
| 6416896 | Material for electrode comprising a non-woven fabric composed of a fluorine-containing resin fiber | Katsutoshi Yamamoto, Jun Asano | 2002-07-09 |
| 6156681 | Multi layered felt, member formed of same, and method of manufacturing same | Katsutoshi Yamamoto, Jun Asano | 2000-12-05 |
| 6133165 | Bulky polytetrafluoroethylene filament and split yarn, method of producting thereof, method of producing cotton-like materials by using said filament or split yarn and filter cloth for dust collection | Katsutoshi Yamamoto, Jun Asano | 2000-10-17 |
| 6117556 | Tape for sealing screw joints | Katsutoshi Yamamoto | 2000-09-12 |
| 5998022 | Polytetrafluoroethylene cotton-like materials | Katsutoshi Yamamoto, Shinichi Chaen, Jun Asano | 1999-12-07 |
| 5912077 | Cotton-like mixed materials, non-woven fabrics obtained therefrom and process for production thereof | Katsutoshi Yamamoto, Jun Asano | 1999-06-15 |
| 5807633 | Polytetrafluoroethylene composite fiber, cotton-like materials obtained therefrom and processes for production thereof | Katsutoshi Yamamoto, Shinichi Chaen, Jun Asano | 1998-09-15 |
| 5772884 | Porous polytetrafluoroethylene film and process for preparation thereof | Osamu Tanaka, Toshio Kusumi, Jun Asano, Katsutoshi Yamamoto, Osamu Inoue +2 more | 1998-06-30 |
| 5684065 | Surface-modified fluorine-containing resin molded article | Hiroyuki Hiraoka, Osamu Tanaka | 1997-11-04 |
| 5225131 | Process for producing multilayer polytetrafluoroethylene porous membrane and semisintered polytetrafluoroethylene multilayer structure | Katsutoshi Yamamoto, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue | 1993-07-06 |
| 5217666 | Process for producing porous polytetrafluoroethylene film | Hirofumi Nishibayashi, Katsutoshi Yamamoto, Osamu Tanaka, Osamu Inoue | 1993-06-08 |
| 5064593 | Process for producing multilayer polytetrafluoroethylene porous membrane | Katsutoshi Yamamoto, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue | 1991-11-12 |
| 4985297 | Composite materials | Motonobu Kubo, Osamu Tanaka, Tsutomu Kobayashi | 1991-01-15 |