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PURE CHEM LTD

Overview
  • Total Patents
    115
About

PURE CHEM LTD has a total of 115 patent applications. Its first patent ever was published in 1953. It filed its patents most often in United Kingdom, France and Germany. Its main competitors in its focus markets macromolecular chemistry and polymers, organic fine chemistry and basic materials chemistry are WESTON CHEMICAL CORP, ELFRIEDE HUSEMANN DR and SIVENTO INC.

Patent filings in countries

World map showing PURE CHEM LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 45
#2 France 31
#3 Germany 28
#4 United States 6
#5 Canada 2
#6 Austria 1
#7 Belgium 1
#8 South Africa 1

Patent filings per year

Chart showing PURE CHEM LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Oakes Vincent 31
#2 Friedman Lester 14
#3 Barker Reuben Lloyd 5
#4 Hutton Ronald Eric 5
#5 Vincent Oakes 4
#6 Verity-Smith Harold 3
#7 Fernley Arnold Michael 3
#8 Tonge Brian Lawrence 3
#9 Eric Hutton Ronald 2
#10 Cross David Frederic Watson 2

Latest patents

Publication Filing date Title
GB1311791A Polyvinyl chloride compositions of heat and light stability
US3665024A Dialkyltin bis(substituted mercaptides)
DE1745284A1 Organic phosphite polymers
GB1168456A Improvements relating to the preparation of alkyl tin compounds
GB1128086A Improvements relating to hydroxy-containing phosphonates and polyurethanes
GB1180398A Improvements relating to Organic Phosphites
GB1173763A Improvements relating to Alkyl Phosphites
US3418349A Method of preparing dibutyl tin maleate
DE1246735B Process for the preparation of dialkyltin maleate
US3448130A Process for preparing dialkyltin oxides and hydroxides
DE1270556B Process for the preparation of polymeric dialkyltin oxides or hydroxides
GB1064178A Improvements in the preparation of alkyl tin compounds
GB1043609A Improvements relating to organotin compounds
GB1070942A Improvements relating to phenyl tin compounds
GB1067437A Improvements relating to manufacture of tri-butyl tin monochloride
GB1047949A Improvements relating to stabilisers for vinyl chloride resins
GB1012630A Halogen-containing phosphonates and polyurethanes
GB1011290A Improvements relating to new alkyl aryl phosphites
DE1520535A1 Process for producing halogenated phosphonates and polyurethanes
DE1242863B Stabilization of vinyl polymers