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SK WELLMAN CO

Overview
  • Total Patents
    128
About

SK WELLMAN CO has a total of 128 patent applications. Its first patent ever was published in 1938. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets mechanical elements, materials and metallurgy and machines are GREY JOHN C, HACKFORTH GMBH & CO KG and ABEX PAGID REIBBELAEGE.

Patent filings in countries

World map showing SK WELLMAN COs patent filings in countries
# Country Total Patents
#1 United States 58
#2 United Kingdom 31
#3 Canada 29
#4 France 8
#5 Germany 2

Patent filings per year

Chart showing SK WELLMAN COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wellman Samuel K 53
#2 Lowey Francis J 11
#3 Tower Charles H 6
#4 Biggs Robert W 5
#5 De Marinis Frank 4
#6 Sutton Walter C 3
#7 Sawyer Charles B 2
#8 Canfield Wade E 2
#9 Wellman Samuel Knowlton 2
#10 Young John L 2

Latest patents

Publication Filing date Title
US4593802A Friction material
GB983432A Friction material articles and method of making the same
US3069758A Friction composition and method of making
GB880647A Friction materials and elements and methods of manufacturing such materials and elements
US3008225A Friction composition
GB880625A A heavy duty friction product
US3033326A Improvement in friction material for a brake
US3008224A Friction article
US2970675A Brake block
US2946369A Method of bending sintered material
US2892707A Method for producing bi-metallic article
US2927015A Method of producing low density iron powder
DE1189814B Sintered friction body made of iron powder and graphite particles
GB811123A Improvements in a friction article
US2863211A Friction assembly
US2793283A Apparatus for welding metallic brake lining backing to brake shoes and the like
DE1019575B Brake pad, especially for trucks
GB747234A Improvements in clutches, brakes and other friction devices
GB750054A Improvements in or relating to bi-metallic brake shoes and methods of making the same
US2771801A Apparatus for shaping bimetallic articles