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STEWARD PLASTICS

Overview
  • Total Patents
    36
  • GoodIP Patent Rank
    212,029
  • Filing trend
    ⇩ 100.0%
About

STEWARD PLASTICS has a total of 36 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1973. It filed its patents most often in United States, Australia and Canada. Its main competitors in its focus markets machines, mechanical elements and electrical machinery and energy are RADIUS SYSTEMS LTD, VERA FABRIKKER AS and GEORG FISCHER WAVIN AG.

Patent filings per year

Chart showing STEWARD PLASTICSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Carlson Lennart L 15
#2 Carlson Eric 8
#3 Hoiberg Douglas I 6
#4 Steward William L 3
#5 Brittain Craig 2
#6 Manson Robert 2
#7 Carlson Lennart Leopold 2
#8 Hughes Tamsen 2
#9 Chronister Daniel 2
#10 Steward W L 1

Latest patents

Publication Filing date Title
US2015276097A1 Helically wound plastic tubing with variable profile thickness and methods of making the same
AU2011363028A1 Flexible tubing with embedded helical conductors and method of making
US2011168287A1 Flexible tubing with dual-level imbedded helical conductors and method of making
US5848223A Double-walled flexible tubing product with helical support bead and heating conductor and apparatus and method for making
NZ285260A Thin-walled flexible plastic tubing with helically bonded bead and electrical resistance conductor, for medical use, and associated forming apparatus
US5454061A Apparatus and method for making flexible tubing with helically wound heating conductor
US4375381A Two piece extruded hose
US4337800A Two piece extruded hose
US3966525A Method of making helically wound plastic tubing
US3963856A Flexible, corrugated, plastic tubing having conductive helical bead
US3910808A Apparatus for making helically wound plastic tubing
GB1377926A Apparatus for making helically wound plastics tubing