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DURIRON CO

Overview
  • Total Patents
    374
About

DURIRON CO has a total of 374 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, mechanical elements and engines, pumps and turbines are ISTAG AG SUHR AG, AMRI and BUERKERT GMBH.

Patent filings per year

Chart showing DURIRON COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Oystein Jacobsen 63
#2 Freed Jacob B 36
#3 Schenck Robert C 27
#4 Helferich Richard Lee 11
#5 Reiling Victor G 11
#6 Storms Robert S 11
#7 Schenck Robert C Jr 11
#8 Jackson Glenn W 10
#9 Duffey Donn W 10
#10 Luce Walter A 10

Latest patents

Publication Filing date Title
US5900083A Heat treatment of cast alpha/beta metals and metal alloys and cast articles which have been so treated
US5807086A Seal chamber splash guard
GB9600630D0 Plug valve assembly
GB9600629D0 Adjustable ball valve
US5336996A Hall effect monitoring of wear of bearing supporting a rotor within a stationary housing
GB9121112D0 Porous ceramic article for use as a filter for removing particulates from diesel exhaust gases
US4878947A Method for manufacture of porous refractory articles
GB8828135D0 Porous refractory ceramic articles and method for manufacture thereof
KR960006252B1 Porous ceramic shapes, compositions for the preparation thereof, and the method for producing the same
US4963515A Lightweight hydrogel-bound aggregate shapes and process for producing same
US4923487A Cross flow diesel particulate trap
US4814300A Porous ceramic shapes, compositions for the preparation thereof, and method for producing same
US4846906A Methods for the manufacture of porous ceramic shapes containing membraneous surfaces
US4812424A Kiln furniture for the firing of ceramic articles
US4871495A Process for producing porous ceramic filter for filtering of particulates from diesel exhaust gases
US4774984A Low-noise plug valve
US4738713A Method for induction melting reactive metals and alloys
US4711264A Plug valve
US4701291A Process of isostatic molding and bonding fluoropolymers
US4968423A Filter leaf