Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for 1,4-phenylenediamine

Process for 1,4-phenylenediamine

US Patent 4400537 · Granted Aug 23, 1983

Estimated economic value: $16,498,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Plant hydrocarbon recovery process1982
Process for recovering hydrocarbons from hydrocarbon-containing biomass1982
Plant hydrocarbon recovery process1982