Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Bis(.beta.-carboxyethyl)isobutyl, sec. butyl and t-butyl phosphine oxide and polyamides containing the same

US Patent 4537993 · Granted Aug 27, 1985

Estimated economic value: $3,107,000

Assignee

Inventors

View full patent text on Google Patents →