Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method for the preparation of certain pyridine and quinoline 2,3-dicarboxylic anhydrides

Method for the preparation of certain pyridine and quinoline 2,3-dicarboxylic anhydrides

US Patent 4439607 · Granted Mar 27, 1984

Estimated economic value: $2,536,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Process of the preparation of chiral nicotinic, quinolinic or benzoic acid imida2002
Process for the preparation of chiral nicotinic, quinolinic or benzoic acid imid2002
Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran he2001
Process for the dehalogenation of thiochroman and dihydrobenzothiophene derivati2001
Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran he1999
Process for the preparation of chiral imidazolinone herbicides1999
Intermediates for the manufacture of herbicidal 1-{ 2-(cyclopropylcarbonyl) Phen1998
Process for the manufacture of herbicidal 1-{[2-(cyclopropylcarbonyl)phyenyl]sul1996
Method for the preparation of 4'-(substituted)-amino-2-(substituted) amino-3',5'1990
Oxalylated amidinohydrazones, method for preparing same and use as insect and fi1982
Pentadienone hydrazones, method for preparing the same, and insecticidal use the1980