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HEAD PHILIP F

Overview
  • Total Patents
    41
About

HEAD PHILIP F has a total of 41 patent applications. Its first patent ever was published in 1991. It filed its patents most often in United Kingdom, Canada and EPO (European Patent Office). Its main competitors in its focus markets civil engineering, electrical machinery and energy and mechanical elements are B AND W INC, POLYOIL LTD and BLACKHAWK SPECIALTY TOOLS LLC.

Patent filings in countries

World map showing HEAD PHILIP Fs patent filings in countries

Patent filings per year

Chart showing HEAD PHILIP Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Head Philip Frederick 8
#2 Head Philip F 6
#3 Head Philip 1

Latest patents

Publication Filing date Title
GB9626021D0 A riser system for a sub sea well and method of operation
GB9506511D0 A flow meter
GB9408096D0 Injector system
GB9407561D0 A flow meter
GB9400455D0 Coiled tubing comprising conduit installed therein
GB9323749D0 Seal assembly for well abandonment
GB9322931D0 A method of abandoning a well and apparatus therefor
GB9315485D0 Coiled tubing injector and pipe handling system
GB9312727D0 A method of abandoning a well and apparatus therefore
US5340626A Well packer
EP0709542A2 Anchored wavy conduit in coiled tubing
GB9220221D0 Method of scale removal and prevention and apparatus therefore
GB9211619D0 Coiled tubing deployed electrical submersible pumps
GB9208842D0 Coiled tubing deployed electrical submersible pumps
GB9203955D0 Wellbore cement placement tool
GB9126912D0 Plug indicator tool
GB9125576D0 Improved wellbore cement placement
GB9123676D0 Non return valve for oil well casing
GB9123227D0 Deployed non return value for oil well casing
GB9117684D0 Well packer