Sawayama; Shigeru
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sawayama; Shigeru.The latest application filed is for "lactam ring containing polymer".
- Sawayama; Shigeru - Yokohama JP
- Sawayama; Shigeru - Machida JP
| Patent | Date |
|---|---|
| Lactam ring containing polymer Grant 5,512,645 - Sawayama , et al. April 30, 1 | 1996-04-30 |
| Acrylic fiber and process for producing the same Grant 5,494,746 - Shiraga , et al. February 27, 1 | 1996-02-27 |
| Paper-making additives comprising cationic polymers Grant 5,389,203 - Sawayama , et al. February 14, 1 | 1995-02-14 |
| Method for sizing of paper Grant 5,320,712 - Sawayama , et al. June 14, 1 | 1994-06-14 |
| Cationic polymer flocculating agents Grant 5,281,340 - Sato , et al. January 25, 1 | 1994-01-25 |
| Vinylamine copolymer, flocculating agent and paper strength increasing agent using the same, as well as process for producing the same Grant 5,064,909 - Itagaki , et al. November 12, 1 | 1991-11-12 |
| Vinylamine copolymer and process for producing same Grant 5,037,927 - Itagaki , et al. August 6, 1 | 1991-08-06 |
| Vinylamine copolymer, flocculating agent etc. Grant 4,957,977 - Itagaki , et al. September 18, 1 | 1990-09-18 |
| Coagulant for minute mineral particles in suspension and method for coagulating thereof Grant 4,783,270 - Murao , et al. November 8, 1 | 1988-11-08 |
| Process for preparing bead polymers Grant 4,158,726 - Kamada , et al. June 19, 1 | 1979-06-19 |
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