Learn more

WESTON CHEMICAL CORP

Overview
  • Total Patents
    158
About

WESTON CHEMICAL CORP has a total of 158 patent applications. Its first patent ever was published in 1960. It filed its patents most often in Canada, United States and United Kingdom. Its main competitors in its focus markets macromolecular chemistry and polymers, organic fine chemistry and machines are PURE CHEM LTD, SIVENTO INC and NUENCHRITZ CHEMIE GMBH.

Patent filings in countries

World map showing WESTON CHEMICAL CORPs patent filings in countries
# Country Total Patents
#1 Canada 64
#2 United States 62
#3 United Kingdom 8
#4 France 7
#5 Germany 5
#6 Belgium 3
#7 Spain 3
#8 Italy 3
#9 Brazil 1
#10 Netherlands 1
#11 Sweden 1

Patent filings per year

Chart showing WESTON CHEMICAL CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Friedman Lester 47
#2 Larrison Millard S 23
#3 Lester Friedman 14
#4 Guttag Alvin 13
#5 Rattenbury Kenneth 6
#6 Gould Henry 5
#7 Bersworth Frederick C 5
#8 Rattenbury Kenneth H 5
#9 Rattenbury K 4
#10 Hechenbleikner I 4

Latest patents

Publication Filing date Title
US4064100A Friable distearyl pentaerythritol diphosphite
US3773716A Olefinic polymers stabilized with thioacyl trivalent phosphorus compounds
GB1392365A Friable distearyl pentaerythitol diphosphite
US3792059A Continuous process of producing nonaromatic tin halides the organic group having not more than five carbon atoms
US3737485A Tripentaerythritol tetraphosphite
US3845168A Trimethylol propane phosphite
CA928717A O,s-diphosphites
US4000101A Thiophosphites and ultraviolet light stabilizer for olefin polymers
US3819571A Polymers stabilized with trimethylol propane phosphites
GB1224286A Improvements in or relating to polyvinyl chloride
US3697627A Polymercapto polyphosphonites
US3651178A Polymercapto chlorido polyphosphonite
US3666837A Polymercapto polyphosphites
US3579624A Insulated alkali metal conductor
US3630715A Alkylene bis (phenoxyacetic acid) derivatives as herbicides
US3641218A Hydrogenated bis phenol diphosphites
US3576919A Polymeric phosphite pentaerythritol triads
US3576918A Pentaerythritol hydrogenated bisphenol a phosphites
US3576920A Phosphites containing more than two hydrogenated phenolic groups
US3576917A Pentaerythritol phosphites containing more than two hydrogenated phenolic groups