Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691428 | Process for producing a polymer using a quinone compound condensation product polymer scale preventive agent | Toshihide Shimizu | 1997-11-25 |
| 5682202 | Apparatus for recording/reproducing video data in a memory card on a cluster basis | Kenji Moronaga | 1997-10-28 |
| 5616660 | Polymerization of ethylenic monomer with scale preventive agent | Toshihide Shimizu, Toshihiko Nakano | 1997-04-01 |
| 5602215 | Polymer scale deposition preventive agent and process of producing polymer using the same | Toshihide Shimizu | 1997-02-11 |