Assignee
GRINNELL CORP
US·41 granted patents·2,280 citations·filing 1986–2004
Top patents by PatentIndex Score
41 records- 0199US6976543B1Low pressure, extended coverage, upright fire protection sprinklerGRINNELL CORP·Filed 2004·Granted Dec 20, 2005·182 cites·94 claims
- 0297US7165624B1Early suppression fast response fire protection sprinklerGRINNELL CORP·Filed 1999·Granted Jan 23, 2007·81 cites·89 claims
- 0397US6059044AFire protection sprinkler and deflectorGRINNELL CORP·Filed 1998·Granted May 9, 2000·135 cites·98 claims
- 0497US5865256ADeflectors for pendent-type fire protection sprinklersGRINNELL CORP·Filed 1996·Granted Feb 2, 1999·146 cites·37 claims
- 0597US5778715ACold rolling positioning roller assemblyGRINNELL CORP·Filed 1996·Granted Jul 14, 1998·73 cites·19 claims
- 0693US5862994ADeflector for upright-type fire sprinklersGRINNELL CORP·Filed 1996·Granted Jan 26, 1999·102 cites·35 claims
- 0793US5450738AMethod and apparatus for forming piping element connections having multiple outward stepsGRINNELL CORP·Filed 1993·Granted Sep 19, 1995·60 cites·11 claims
- 0893US4861075ACoupling for rigidly connecting pipe sectionsGRINNELL CORP·Filed 1988·Granted Aug 29, 1989·109 cites·8 claims
- 0992US6557645B1Dry pipe valve for fire protection sprinkler systemGRINNELL CORP·Filed 2000·Granted May 6, 2003·37 cites·17 claims
- 1092US5839667APendent-type diffuser impingement water mist nozzleGRINNELL CORP·Filed 1997·Granted Nov 24, 1998·153 cites·19 claims
- 1190US5947152ACheck valve and backflow preventerGRINNELL CORP·Filed 1998·Granted Sep 7, 1999·75 cites·26 claims
- 1287US6357467B1Automatic water supply shutoff valveGRINNELL CORP·Filed 2000·Granted Mar 19, 2002·35 cites·23 claims
- 1386US6454017B1Upright fire protection nozzleGRINNELL CORP·Filed 2000·Granted Sep 24, 2002·39 cites·23 claims
- 1485US5829684APendent-type diffuser impingement water mist nozzleGRINNELL CORP·Filed 1996·Granted Nov 3, 1998·84 cites·44 claims
- 1585US5570603AMethod and apparatus for cold rolling piping element connections having multiple outward stepsGRINNELL CORP·Filed 1995·Granted Nov 5, 1996·36 cites·2 claims
- 1685US5152344AFire protection sprinklerGRINNELL CORP·Filed 1991·Granted Oct 6, 1992·104 cites·26 claims
- 1784US7104333B2Dry pipe valve for fire protection sprinkler systemGRINNELL CORP·Filed 2003·Granted Sep 12, 2006·18 cites·35 claims
- 1882US4901799ASprinkler head having protuberant ridge valve seatGRINNELL CORP·Filed 1988·Granted Feb 20, 1990·74 cites·11 claims
- 1981US5392993AFire protection nozzleGRINNELL CORP·Filed 1994·Granted Feb 28, 1995·85 cites·19 claims
- 2080US6308784B1Flush sprinklerGRINNELL CORP·Filed 2000·Granted Oct 30, 2001·33 cites·39 claims
- 2180US4893679AHeat-responsive element for fire protection sprinklers or the likeGRINNELL CORP·Filed 1988·Granted Jan 16, 1990·58 cites·12 claims
- 2279US5810263ADeflector for horizontal-type fire sprinklersGRINNELL CORP·Filed 1996·Granted Sep 22, 1998·75 cites·28 claims
- 2379US5188185ADry sprinklerGRINNELL CORP·Filed 1991·Granted Feb 23, 1993·74 cites·15 claims
- 2478US5505383AFire protection nozzleGRINNELL CORP·Filed 1994·Granted Apr 9, 1996·65 cites·13 claims
- 2575US4618002AFire protection sprinkler headGRINNELL CORP·Filed 1986·Granted Oct 21, 1986·48 cites·11 claims
- 2674US6318564B1StrainerGRINNELL CORP·Filed 2000·Granted Nov 20, 2001·20 cites·14 claims
- 2774USD348018SWater meter, register and housingGRINNELL CORP·Filed 1993·Granted Jun 21, 1994·18 cites·1 claims
- 2874USD348017SWater meter register and housingGRINNELL CORP·Filed 1993·Granted Jun 21, 1994·18 cites·1 claims
- 2974US5236002ADomestic water supply shutoff valveGRINNELL CORP·Filed 1992·Granted Aug 17, 1993·32 cites·14 claims
- 3070US6123153AFire protection sprinkle and release mechanismGRINNELL CORP·Filed 1998·Granted Sep 26, 2000·50 cites·33 claims
- 3169US5533576AAutomatic on-off fire protection sprinklerGRINNELL CORP·Filed 1994·Granted Jul 9, 1996·45 cites·10 claims
- 3269US5219427AClevis pipe hangerGRINNELL CORP·Filed 1992·Granted Jun 15, 1993·35 cites·7 claims
- 3368US6810963B2Dry pipe valve for fire protection sprinkler systemGRINNELL CORP·Filed 2003·Granted Nov 2, 2004·11 cites·20 claims
- 3461US5709240ACheck valve and backflow preventerGRINNELL CORP·Filed 1996·Granted Jan 20, 1998·22 cites·16 claims
- 3560US5365785ASubmersible meter register case and assemblyGRINNELL CORP·Filed 1992·Granted Nov 22, 1994·20 cites·34 claims
- 3658US6726119B2Upright fire protection nozzleGRINNELL CORP·Filed 2001·Granted Apr 27, 2004·7 cites·35 claims
- 3740US4945948ASight flow indicatorGRINNELL CORP·Filed 1989·Granted Aug 7, 1990·6 cites·11 claims
- 3830USD400075SPipe cutting toolGRINNELL CORP·Filed 1997·Granted Oct 27, 1998·5 cites·1 claims
- 3925US5944288AConstant support pipe hangerGRINNELL CORP·Filed 1998·Granted Aug 31, 1999·5 cites·1 claims
- 4022US5659575AMethod and apparatus for improving data regeneration in asynchronous network communicationGRINNELL CORP·Filed 1995·Granted Aug 19, 1997·4 cites·7 claims
- 4112US6013150AArticle tagging apparatus and methodGRINNELL CORP·Filed 1997·Granted Jan 11, 2000·1 cites·16 claims
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