Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Phenothiazine derivatives

Phenothiazine derivatives

US Patent 4855424 · Granted Aug 8, 1989

Estimated economic value: $25,522,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cleaning device with deeply reaching plasma and assisting electrodes2003
Cleaning device with deeply reaching plasma and assisting electrodes2002
Use of phenothiazine derivatives to inhibit scale build up during polymerization1994
Process for making polyvinyl chloride using phenothiazine oligomer1993
Process for producing methylene bis(phenothiazines)1990
Phenothiazine composition for use in reactor scale prevention1989
Process for preparing high bulk density vinyl resins1986
Process for preparing high bulk density vinyl resins1986
Inversion polymerization process for producing vinyl resins using coated reactor1981
Inversion polymerization process for producing vinyl resins using a dual layer c1980
Inversion polymerization process for producing vinyl resins using a dual layer c1980