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CHEM SYSTEMS

Overview
  • Total Patents
    175
About

CHEM SYSTEMS has a total of 175 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets organic fine chemistry, chemical engineering and environmental technology are WEIHAI HANFU BIOCHEMICAL PHARMACEUTICAL CO LTD, JIANGSU BEYOND CHEMICALS CO LTD and TEXACO CHEM INC.

Patent filings per year

Chart showing CHEM SYSTEMSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sherwin Martin B 19
#2 Gelbein Abraham P 17
#3 Peress Jimmy 17
#4 Kesting Robert E 14
#5 Jung John A 12
#6 Hansen Robert 12
#7 Sherwin M B 9
#8 Sherwin Martin Barry 8
#9 Brownstein Arthur Marvin 8
#10 Frank Marshall E 6

Latest patents

Publication Filing date Title
EP0191995A1 Hydrogenation catalysts and their use
US4639470A Method for making methanol
US4585899A Hydrogenation of carboxylic acid compounds to aldehydes using MnO2 on gamma alumina as catalyst
US4585900A Hydrogenation of carboxylic acid compounds to aldehydes using Cu/YtO as catalyst
US4422886A Surface treatment for aluminum and aluminum alloys
AU1182483A Preparation of alpha beta unsaturated acid esters
US4477594A Process for the synthesis of aliphatic alcohol-containing mixtures
US4439309A Two-stage hydrogen donor solvent cracking process
US4391652A Surface treatment for aluminum and aluminum alloys
JPS57169436A Manufacture of methanol
EP0034011A1 Method for making methanol
US4325803A Process for hydrogenation/extraction of organics contained in rock
US4261899A Phthalic anhydride reaction system
JPS55147235A Carbonylation of olefin
EP0017441A1 Preparation of esters
US4311851A Preparation of carboxylic acid esters with BF3 -alcohol complex catalyst
US4399295A Process for preparing oxirane compounds
US4256913A Preparation of carboxylic acids using a BF3 catalyst complex
US4262138A Preparation of carboxylic acid esters with BF3 complex catalyst
CA1138898A Phenylethyl alcohol preparation with mixed feeds