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NEPERA CHEMICAL CO INC

Overview
  • Total Patents
    137
About

NEPERA CHEMICAL CO INC has a total of 137 patent applications. Its first patent ever was published in 1939. It filed its patents most often in United States, France and United Kingdom. Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and audio-visual technology are RAVIZZA SPA, ANTIBIOTICE IASI INTREPRINDERE and CHIMETRON SARL.

Patent filings in countries

World map showing NEPERA CHEMICAL CO INCs patent filings in countries

Patent filings per year

Chart showing NEPERA CHEMICAL CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Duesel Bernard F 16
#2 Godfrey Wilbert 15
#3 Fand Theodore I 12
#4 Scudi John V 12
#5 Tenenbaum Leon E 10
#6 Anderson Floyd E 6
#7 Grail Godfrey F 5
#8 Duesel Bernard Francis 5
#9 Seymour Hyden 5
#10 Fand Theodore Ira 5

Latest patents

Publication Filing date Title
US4672121A Preparation of 4-substituted pyridines using quaternary pyridine salts
EP0131887A1 Improved process for preparing pyridine-type bases in a fluid bed using a crystalline aluminosilicate zeolite catalyst
DE3029376A1 2,4,5-Tris-pyridyl-imidazole derivs. prodn. - by catalytic hydrogenation of 2,4,6-tris-pyridyl-sym-triazine derivs.
US3341545A Pyridine isocyanates
US3359272A Lower alkenyl pyridine carbonates
US3291803A Magnesium salts of pyridine carboxylic acids
US3284460A Pyridylthiolcarbamates and process for their production
US3284461A O-pyridylalkyl-n-alkenyl urethanes and process for their production
US3284459A Pyridylthiolcarbonates and process for their production
US3364225A O-alkenyl-and o-aryl-n-pyridyl urethanes and process for their production
US3376307A Amino esters of (2, 3 or 4) pyridyl carbamic acid
US3341587A Process for the preparation of n-acetyl-p-aminophenol (apap)
US3357968A Fluoro-substituted phenylazopyridines
US3274206A Process for the production of pyridine aldehydes
US3267109A 3, 5-pyridinedisulfonic acid
US3218330A Preparation of 3-hydroxypyridine
US3064058A Method of preparing fluorinated compounds
US3182089A Method of preparing 2, 4, 6-triiodinated aromatic compounds
US3090812A Method of producing isonitrosopropiophenone
US3028429A Method of producing 2-amino-1-phenyl-1-propanol hydrochloride