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ESSEF CORP

Overview
  • Total Patents
    94
About

ESSEF CORP has a total of 94 patent applications. Its first patent ever was published in 1985. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets machines, mechanical elements and chemical engineering are PLAXATS OLLE SALVADOR, PROJECTILE & ENGINEERING COMPA and RABE JUERGEN.

Patent filings per year

Chart showing ESSEF CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Murphy James C 37
#2 Coeckelbergs Erik 22
#3 Boyce Gerald S 22
#4 Lebreton Edward T 11
#5 Hlebovy James C 9
#6 Carter Thomas G 8
#7 Goldsworthy William B 7
#8 Korzeniowski George J 6
#9 Wilkes Robert D 5
#10 Goodge Kevin 4

Latest patents

Publication Filing date Title
US7090736B2 Pressure vessel prestressing technique
US6932391B2 Quick-release fitting assembly
US7017771B1 Pressure vessel
US6660214B2 Pressure vessel manufacture method
AU6038999A Method for fabricating composite pressure vessels and products fabricated by the method
MXPA01002525A Method for fabricating composite pressure vessels and products fabricated by the method.
US6485668B1 Method for fabricating composite pressure vessels and products fabricated by the method
US6190598B1 Method for making thermoplastic composite pressure vessels
US6171423B1 Method for fabricating composite pressure vessels
US6565793B1 Method for fabricating composite pressure vessels
US6298553B1 Composite pressure vessel with heat exchanger
US6793095B1 Blow-molded pressure tank with spin-welded connector
US5806705A Sealing technique for hydropneumatic pressure vessel
EP0836922A2 Rotationally cast pump housing
US5878773A Auxiliary flow path valve
US5819978A Two piece composite inlet
US5759414A Swimming pool main drain assembly
US5759387A Grey water filter tank recovery system and filter backwashing system
CN1176879A Fitting installation process and apparatus for molded plastic vessel
SG72702A1 Fitting installation process and apparatus for a molded plastic vessel