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GRINNELL CORP

Overview
  • Total Patents
    457
About

GRINNELL CORP has a total of 457 patent applications. Its first patent ever was published in 1941. It filed its patents most often in United States, United Kingdom and France. Its main competitors in its focus markets mechanical elements, machines and civil engineering are BS&B SAFETY SYSTEMS LTD, FUJI METAL MFG and ARGUS GMBH.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Boteler Henry W 34
#2 Sherburne Philip C 28
#3 Fischer Michael A 24
#4 Loepsinger Albert J 23
#5 Mears James W 11
#6 Thielsch Helmut J 10
#7 Sherburne P C 10
#8 Martin James M 9
#9 Maguire Jr Philip F 8
#10 Alfred Zollinger 8

Latest patents

Publication Filing date Title
US6976543B1 Low pressure, extended coverage, upright fire protection sprinkler
WO0200302A2 Upright fire protection nozzle
US6454017B1 Upright fire protection nozzle
US6557645B1 Dry pipe valve for fire protection sprinkler system
US6357467B1 Automatic water supply shutoff valve
US6308784B1 Flush sprinkler
US6318564B1 Strainer
US7165624B1 Early suppression fast response fire protection sprinkler
US6123153A Fire protection sprinkle and release mechanism
US6059044A Fire protection sprinkler and deflector
US5944288A Constant support pipe hanger
US5947152A Check valve and backflow preventer
US6013150A Article tagging apparatus and method
WO9819087A2 Valve spindle seal
GB0012935D0 Horizontal-type fire sprinkler
US5839667A Pendent-type diffuser impingement water mist nozzle
US5778715A Cold rolling positioning roller assembly
US5829684A Pendent-type diffuser impingement water mist nozzle
US5865256A Deflectors for pendent-type fire protection sprinklers
US5810263A Deflector for horizontal-type fire sprinklers