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PFAUDLER CO INC

Overview
  • Total Patents
    219
About

PFAUDLER CO INC has a total of 219 patent applications. Its first patent ever was published in 1903. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, chemical engineering and mechanical elements are DIETRICH USA INC DE, NIPPON PULP IND CO LTD and LANG KO C.

Patent filings in countries

World map showing PFAUDLER CO INCs patent filings in countries

Patent filings per year

Chart showing PFAUDLER CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Amorese Franklyn J 15
#2 Nichols Edgar B 14
#3 Jacobsen Jens N 13
#4 Goecke Rudolph F 12
#5 Greene Otto W 12
#6 Todd Ulysess G 10
#7 Nunlist Erwin J 9
#8 Osborne Alec V 8
#9 Paige David O 6
#10 Minard Everett S 6

Latest patents

Publication Filing date Title
CA2115311A1 O-ring envelope gasket
US5275501A Quick opening manhole cover assembly for use with virtually any shape manhole cover
EP0462383A1 Closure for clean chemical reactor
CA2029150A1 Manway lift assist
US5038520A Manway lift assist
US5069423A Valve for clean chemical reactor
US4796344A Method for avoiding thermal stresses in glass lined vessels
US4361334A Compression sealed composite seal seat with cooling passages
CA1158638A Separable blade agitator with clip-on impellers
CA1146112A Method of forming a platinum layer on tantalum
GB828254A Method for repairing glass coated apparatus
GB816240A Improvements in or relating to sectional containers
GB792718A Container supporting means
US2811339A Separable glass coated agitators
US2806629A Sectional glass lined container
US2808176A Container supporting means
US2808657A Jacketed conical dryer
US2931631A Mechanical seal assembly and method of operation
US2801024A Corrosion resistant tank
US2820579A Combined valve and measuring chamber