Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7276293 | Far-infrared radiator and method for producing method | Maejima Masatsugu, Hirata Masanori, Ito Hiroshi, Teramoto Keigo | 2007-10-02 |
| 5336341 | Infrared radiation element and process of producing the same | Masatsugu Maejima, Akihito Kurosaka, Mamoru Matsuo, Hiroyoshi Gunji, Toshiki Muramatsu | 1994-08-09 |
| 4726443 | Diaphragm | Masana Ugaji, Shinichi Watanabe, Hiroyuki Sogawa, Nobuo Fuke, Masatsugu Maejima | 1988-02-23 |
| 4368107 | Method of surface treatment of porous material | Masatsugu Maejima, Kazuo Isawa | 1983-01-11 |