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PETER SPENCE & SONS LTD

Overview
  • Total Patents
    231
About

PETER SPENCE & SONS LTD has a total of 231 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets materials and metallurgy, chemical engineering and macromolecular chemistry and polymers are MULTI MINERALS LTD, SOLUMETA and ENGELHARD IND.

Patent filings in countries

World map showing PETER SPENCE & SONS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 121
#2 France 46
#3 United States 30
#4 Germany 24
#5 Belgium 3
#6 Switzerland 2
#7 Spain 2
#8 Austria 1
#9 Australia 1
#10 Finland 1

Patent filings per year

Chart showing PETER SPENCE & SONS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Whittam Thomas Vincent 16
#2 Kerr John 9
#3 Rycke Douglas August Charles D 9
#4 Williams Leslie 8
#5 Vincent Whittam Thomas 6
#6 Howard Spence 5
#7 William Crundall Sydney Franci 5
#8 Brown Gerald Taylor 5
#9 Spence Howard 5
#10 Pickard Keith John 5

Latest patents

Publication Filing date Title
GB1208446A Improvements in or relating to the preparation of silicates
GB1217861A Improvements in or relating to synthetic zeolitic compounds
GB1193254A Improvements in or relating to the preparation and use of Active Siliceous Compounds
GB1138444A Improvements in or relating to catalysts
GB1171464A Improvements in or relating to Synthetic Crystalline Zeolites
GB1171463A Improvements in or relating to the manufacture of Synthetic Zeolites
GB1171462A Improvements in or relating to the preparation of Silicates
GB1145995A Improvements in or relating to the preparation of crystalline synthetic zeolites
GB1132846A Improvements in or relating to waste gas purification
GB1107717A Improvements in or relating to paper
GB1108015A Improvements in or relating to paper
GB1082131A Manufacture of zeolites
GB1097306A Improvements in or relating to waste gas purification
GB1096611A Improvements in or relating to exhaust systems of internal combustion engines
GB1098705A Improvements in or relating to the preparation of alumina
GB1034621A Improvements in and relating to catalysts
GB1031775A Improvements in and relating to catalysts
GB1040295A Improvements in and relating to catalysts
GB1045731A Improvements in or relating to coagulation and/or conditioning of sewage sludges
GB1010204A Self-extinguishing epoxy resins