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KARPEN & BROS S

Overview
  • Total Patents
    162
About

KARPEN & BROS S has a total of 162 patent applications. Its first patent ever was published in 1901. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets furniture and games, transport and organic fine chemistry are STJERNFJAEDRAR AB, INDRATECH LLC and ARCY FRANK P D.

Patent filings in countries

World map showing KARPEN & BROS Ss patent filings in countries
# Country Total Patents
#1 United States 136
#2 United Kingdom 10
#3 France 8
#4 Germany 7
#5 Austria 1

Patent filings per year

Chart showing KARPEN & BROS Ss patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hultgren Charles R 16
#2 Carter Carnie B 16
#3 Charles Lofman 12
#4 Derveer Clarence A Van 12
#5 Charles Hultgren 9
#6 Coxe Albert E 8
#7 Karpen Isaac 7
#8 Solomon Karpen 5
#9 Karpen Solomon 5
#10 Karl Kaiser 5

Latest patents

Publication Filing date Title
US2556924A Spring and cushion structure
US2545608A Reversible seat back and armrest structure
US2456874A Tilting cushion structure
US2458185A Seat
US2420220A Seat back construction
US2372495A Seat
US2363637A Mattress and method of making the same
US2359220A Mattress and the like and method of forming the same
US2396022A Seat
US2355762A Chair or seat
US2292597A Cushion structure for seat backs
US2283485A Reclining seat mechanism
US2305430A Mattress, cushion, and the like
US2229385A Mattress
US2247264A Revolving car seat
US2138314A Seat back
US2200011A Mattress
US2163359A Seat back and the like and method of forming
US2200904A Revolving car seat
US2151628A Chair seat