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PUROLATOR PRODUCTS INC

Overview
  • Total Patents
    163
About

PUROLATOR PRODUCTS INC has a total of 163 patent applications. Its first patent ever was published in 1939. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets chemical engineering, machines and engines, pumps and turbines are WIX CORP, CHAMPION LAB INC and CAMBRIDGE FILTER MFG CORP.

Patent filings in countries

World map showing PUROLATOR PRODUCTS INCs patent filings in countries

Patent filings per year

Chart showing PUROLATOR PRODUCTS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wells Donald H 12
#2 De Groote Melvin 12
#3 Scavuzzo William J 11
#4 Kovacs Julius P 10
#5 Kovacs Julius Paul 8
#6 Hultgren William H 8
#7 Casaleggi Charles J 6
#8 Layte Ralph R 6
#9 Gruner Frederick R 5
#10 Wilhelm John R 5

Latest patents

Publication Filing date Title
US5269571A Fuel filter retaining clip having rotating flipper portions
BR8604753A Fluid filter and fixing process
US4541265A Process for forming a deep drawn and ironed pressure vessel having selectively controlled side-wall thicknesses
US3517820A Coalescer cartridge
US3646906A Pressure indicator and surge control device
ES349626A1 An indicator sensitive to a default condition. (Machine-translation by Google Translate, not legally binding)
ES347264A3 An exterior filter element to be used under high differential pressures. (Machine-translation by Google Translate, not legally binding)
US3455455A Device for the analysis of the filter characteristics of porous media
US3468425A Fluid filter element
US3438657A Swaged ferrule type flexible coupling
US3329276A Fluid filter elements
US3490597A Cover plate for spin-on-filter
US3613726A Balanced pressure coupling
US3364897A Differential fluid pressure indicator
US3212471A Differential pressure indicator
US3380476A Fluid coupling with vacuum assisted valve elements
US3357940A Silicone rubber containing antimony trisulfide and cured with peroxides
US3339738A Anti-drainback valve for filter
US3265213A Filter assembly having the enclosure embedded in the bottom member
US3297162A Fluid filter with extended service life