Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for the production of high-purity tetrachloro-1,4-benzoquinone

Process for the production of high-purity tetrachloro-1,4-benzoquinone

US Patent 5149850 · Granted Sep 22, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Process for the preparation of 4-alkylsulfonyl-1-alkyl-2-chlorobenzenes and simi2001
Process for producing quinazoline derivatives1999
2-chloro-5-fluoro-4-morpholinonitrobenzene and 2-chloro-5-fluoro-4-morpholinoani1999
Monoesters of carboxymethylene anthranilic acids and process for preparing the s1999
Process for preparing N-carboxymethylene-4-chloro-anthranilic acid and its dialk1999
Process for the preparation of n-carboxyalkyl-3-fluoro-4-dialkylaminoanilines1999
Process for the preparation of esters of aromatic carboxylic acid1999
Process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine1998
Process for the preparation of N-carboxymethyleneanthranilic acid1998
Process for the preparation of esters of aromatic carboxylic acids1998
Process for the preparation of salts of substituted or unsubstituted phthalic ac1998
Hydroxycarboxylic acid anilides1998