Issued Patents All Time
Showing 26–50 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5457170 | Process to prevent polymer scale adhesion using condensation product of an aromatic amine and a quinone | Mikio Watanabe | 1995-10-10 |
| 5442017 | Process for producing polymer wherein polymer scale deposition is prevented | Mikio Watanabe | 1995-08-15 |
| 5442002 | Polymer scale deposition preventive agent | Mikio Watanabe | 1995-08-15 |
| 5424003 | Reaction product of an aromatic amine and quinone as a polymer scale preventive agent | Mikio Watanabe | 1995-06-13 |
| 5424377 | Process to prevent scale adhesion using condensation product of aromatic amine and a quinone | Mikio Watanabe | 1995-06-13 |
| 5420214 | Process to prevent scale adhesion using condensation product of a diamino heterocyclic and a quinone | Mikio Watanabe | 1995-05-30 |
| 5418302 | Process to prevent polymer scale adhesion using a two part coating | Minoru Shigemitsu | 1995-05-23 |
| 5416174 | Scale preventive coating of pyrogallol-acetone resin and water soluble polymer | Mikio Watanabe | 1995-05-16 |
| 5414061 | Polymer scale preventive liquid and method of preventing polymer scale deposition | Takanori Sato | 1995-05-09 |
| 5403903 | Process for preventing polymer scale using an alkaline solution of a condensation product of an aromatic dibasic acid dihydrazide and an aromatic tetracarboxylic acid anhydride | Mikio Watanabe | 1995-04-04 |
| 5401815 | Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel | Minoru Shigemitsu | 1995-03-28 |
| 5399613 | Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel | Mikio Watanabe | 1995-03-21 |
| 5397849 | Process for preventing polymer scale using an alkaline solution of a condensation product of an aromatic compound having at least two amino groups and an aromatic bisester anhydride | Mikio Watanabe | 1995-03-14 |
| 5393857 | Polymer scale preventive agent | Mikio Watanabe | 1995-02-28 |
| 5391653 | Method for preventing polymer scale deposition | Mikio Watanabe | 1995-02-21 |
| 5378775 | Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel | Minoru Shigemitsu | 1995-01-03 |
| 5378774 | Polymer scale preventive agent | Mikio Watanabe | 1995-01-03 |
| 5378773 | Process to prevent scale adhesion during polymerization of vinyl monomers | Mikio Watanabe | 1995-01-03 |
| 5364466 | Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel | Minoru Shigemitsu | 1994-11-15 |
| 5357009 | Polymer scale preventive agent | Mikio Watanabe | 1994-10-18 |
| 5352748 | Polymer scale preventive agent, polymerization vessel wherein polymer scale is prevented from depositing, and process of producing polymer using the same | Mikio Watanabe | 1994-10-04 |
| 5302639 | Polymer scale preventive agent | Minoru Shigemitsu | 1994-04-12 |
| 5298220 | Method of preventing polymer scale formation | Ichiro Kaneko, Mikio Watanabe | 1994-03-29 |
| 5264505 | Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel | Minoru Shigemitsu | 1993-11-23 |
| 5254646 | Polymer scale preventive agent, polymerization vessel for preventing polymer scale deposition, and process of producing polymer using said vessel | Minoru Shigemitsu | 1993-10-19 |