Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255400 | Polymer and applications thereof | Hiroshi Itoh, Susumu Oyama, Takashi Yodoya, Kenji Tsuboi, Tsugio Matsubara +4 more | 2001-07-03 |
| 4783240 | Lightweight paper and process for producing same | Akio Kurokawa, Naoyuki Ifuku, Youzi Nagata | 1988-11-08 |
| 4433133 | Process for producing crosslinked urea-formaldehyde polymer particles | Naoyuki Ifuku, Akio Kurokawa, Kaoru Usami, Naoyuki Aikawa | 1984-02-21 |