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WEIR SPM INC

Overview
  • Total Patents
    32
About

WEIR SPM INC has a total of 32 patent applications. Its first patent ever was published in 2009. It filed its patents most often in United States, China and Canada. Its main competitors in its focus markets engines, pumps and turbines, machines and mechanical elements are VICARS BERTON L, IIC MECH PROD and ZAHROOF VALVES INC.

Patent filings per year

Chart showing WEIR SPM INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Matzner Mark D 19
#2 Hawes John E 8
#3 Witkowski Brian C 8
#4 Kotapish Edward C 7
#5 Kugelev Vladimir 5
#6 Patel Pankaj H 3
#7 Said Nuder M 2
#8 Vladimir Kugelev 2
#9 Hawes John 1
#10 Patel Pankaj 1

Latest patents

Publication Filing date Title
US2011173814A1 Valve Seat Installation and Retrieval Tool
US2011079302A1 Pump Valve with Full Elastomeric Contact on Seat
US2011030213A1 Hydraulic installation tool for pump plunger
US2010325888A1 Carrier for plunger during disassembly
CN102713294A Readily removable pump crosshead
US2010242720A1 Bimetallic Crosshead
US2010260631A1 Multi-piece connecting rod
US2010172778A1 Connecting rod without wrist pin
CN103443458A Suction port lock nut with stub buttress threads
CN102713382A Hydraulic unloading valve
CA2688639A1 Improved ball injector
CA2686204A1 Floating pinion bearing for a reciprocating pump