Assignee
- Sagami Chemical Research Center
- Central Glass Company, Limited
- Hodogaya Chemical Co.
- Nippon Soda Co.
- Nissan Chemical Industries
- Tosoh
Inventors
- Tetsuzo Miki (8 patents)
- Seishi Kato (13 patents)
- Hiroshi Osada (37 patents)
US Patent 5095096 · Granted Mar 10, 1992