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LYALL R W & CO INC

Overview
  • Total Patents
    22
  • GoodIP Patent Rank
    229,093
About

LYALL R W & CO INC has a total of 22 patent applications. Its first patent ever was published in 1979. 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 measurement are GLYNWED TUBES & FITTINGS, RIB LOC AUSTRALIA and KUNGSOERS PLAST AB.

Patent filings in countries

World map showing LYALL R W & CO INCs patent filings in countries
# Country Total Patents
#1 United States 18
#2 EPO (European Patent Office) 2
#3 Canada 1
#4 Spain 1

Patent filings per year

Chart showing LYALL R W & CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lyall Robert W 7
#2 Hill Donald C 5
#3 Lyall Lucian H 3
#4 Huetinck Mark E 3
#5 Bridgewater Ronald D 2
#6 Lyall Jeffrey W 2
#7 Huetinck Mark 2
#8 Kitterman Robert K 2
#9 Winnie Harold R 2
#10 Zapalac Dan P 1

Latest patents

Publication Filing date Title
US2020109802A1 Mechanical fitting for plastic pipe
US2008012289A1 Mechanical repair fitting for polyethylene pipes
US7152621B1 Integrated gas meters bar device and locking shut-off valve
US5971003A Apparatus to service gas meters
US5689938A Method of fabricating and installing gas service line completion kit
US5465751A Excess flow valve
US5437300A Apparatus for changing out gas meters
US5501331A Gas service line completion kit and method of fabrication and installation
US5367756A Gas meter riser transition field completion tool
US4906313A Fusion weld method and assembly for forming a fusion welded joint between pipe sections
US4943706A Method and apparatus for fusing thermoplastic materials
US4695335A Method for developing a predetermined fusing temperature in thermoplastic items
US4718698A Apparatus and method of forming fusion welded butt joint between thermoplastic pipe sections
US4635972A Plastic pipe coupling apparatus and method of using same
CA1136673A Slip fit type tubing coupling
US4257452A Biased open direct response valve with damping means
US4243254A Slip fit type tubing coupling