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GRISWOLD CONTROLS

Overview
  • Total Patents
    72
About

GRISWOLD CONTROLS has a total of 72 patent applications. Its first patent ever was published in 1961. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, mechanical elements and control are REPUBLIC BRASS COMPANY, STANDARD SA and BREDA SILVANO.

Patent filings per year

Chart showing GRISWOLD CONTROLSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Griswold David E 28
#2 Griswold David Edward 12
#3 Marandi Ali 11
#4 Veit Richard E 8
#5 Griswold D 7
#6 Moya Emmanuel G 3
#7 Veit R 2
#8 Wingert James L 2
#9 Likins Jonathan D 1
#10 Yates Harry D 1

Latest patents

Publication Filing date Title
US7097766B2 Sand filter with rotating vanes
US7025890B2 Dual stage centrifugal liquid-solids separator
WO9704261A1 Flow control cartridge
US5635068A Combination centrifugal separator for air and solids
US5433243A Fluid flow control device and method
WO9421352A1 Automatic fluid flow control and strainer device
US5230366A Automatic fluid flow control device
US4452272A Check valve
US4364408A Backflow prevention apparatus
US4333495A Check valve assembly
US4276897A Backflow prevention apparatus
CA1101303A Backflow prevention apparatus
CA1090675A Backflow prevention apparatus
US4244395A Check valve assembly
US4244392A Backflow prevention apparatus
IL45802D0 Check valve useful in backflow prevention apparatus
US3723827A Selective and sequential control system
US3752184A Flow control valve
US3752183A Flow valve having tapered cup
US3599867A Modular irrigation control system