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SUNSTONE CORP

Overview
  • Total Patents
    39
About

SUNSTONE CORP has a total of 39 patent applications. Its first patent ever was published in 2001. It filed its patents most often in United States, Argentina and EPO (European Patent Office). Its main competitors in its focus markets civil engineering, materials and metallurgy and machines are AKER KVAERNER MH AS, INTEDYNE L L C and RED BARON.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Hughes William James 23
#2 Richardson Murl Ray 7
#3 Renfro Jimmie Josh 6
#4 Hughes W James 5
#5 Hughes William J 4
#6 Richardson Murl R 2
#7 Dunbar Mark 2
#8 Dunbar Mark Edward 2
#9 Vandervort Kurt D 1
#10 Ray Richardson Murl 1

Latest patents

Publication Filing date Title
US2008035353A1 Flapper valve and actuator
US2006074269A1 Underground treatment of biowaste
US2006037744A1 Rotating pressure control head
US7468173B2 Method for producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance
US7226090B2 Rod and tubing joint of multiple orientations containing electrical wiring
US6899188B2 Down hole drilling assembly with concentric casing actuated jet pump
EP1300544A1 Concentric casing jack
US6769498B2 Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing
US6666274B2 Tubing containing electrical wiring insert
US6877571B2 Down hole drilling assembly with independent jet pump