Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5989801 | Silver halide photographic material and method for forming image | Toshio Hirosawa, Kouji Katsube, Yoshiro Hayafuchi, Katsuyuki Arasawa | 1999-11-23 |
| 5973042 | Highly water-absorptive polymers having enhanced gel strength | Kenji Yoshinaga, Shozo Kitagawa, Miho Tanaka, Kiichi Ito | 1999-10-26 |
| 5939247 | Silver halide photographic material and a process for forming images | Toshio Hirosawa, Kouji Katsube, Yoshiro Hayafuchi, Katsuyuki Arasawa, Junichi Komiyama +2 more | 1999-08-17 |
| 5728511 | Silver halide photographic material and image-forming process | Toshio Hirosawa, Kouji Katsube, Junichi Komiyama, Yoshiro Hayafuchi | 1998-03-17 |
| 5548047 | Process for the production of highly water absorptive polymers | Kiichi Ito, Shuhei Yada, Miho Oomori | 1996-08-20 |
| 5185413 | Process for producing highly water-absortive polymers | Kenji Yoshinaga, Kiichi Itoh | 1993-02-09 |
| 5087656 | Highly water-absorptive powdery polymer composition | Kenji Yoshinaga, Hirochika Hosaka | 1992-02-11 |
| 4858765 | Portable holder for stick-type cosmetic case | Tomio Tahara | 1989-08-22 |