Inventor

POLAN GEORGE S

US51 patents

⚠️ This page may combine multiple inventors who share the name “POLAN GEORGE S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CENTRAL SPRINKLER CORP

20 patents

US5366022ANov 22, 1994

Extended coverage ceiling sprinklers and systems

CENTRAL SPRINKLER CORP111 citations99

US5829532ANov 3, 1998

Low pressure, early suppression fast response sprinklers

CENTRAL SPRINKLER CORP97 citations98

US6336509B1Jan 8, 2002

Low pressure fast response bulb sprinklers

CENTRAL SPRINKLER CORP70 citations96

US5584344ADec 17, 1996

Extended coverage ceiling sprinklers and systems

CENTRAL SPRINKLER CORP70 citations96

US5579846ADec 3, 1996

Extended coverage ceiling sprinklers and systems

CENTRAL SPRINKLER CORP85 citations96

US5097906AMar 24, 1992

Concealed automatic sprinkler

CENTRAL SPRINKLER CORP59 citations96

US5094298AMar 10, 1992

Fire sprinkler apparatus

CENTRAL SPRINKLER CORP91 citations96

US5083616AJan 28, 1992

Ceiling sprinkler

CENTRAL SPRINKLER CORP55 citations96

US4976320ADec 11, 1990

Concealed sprinkler with drop down deflector assembly, and improved fusible valve lever assembly

CENTRAL SPRINKLER CORP88 citations96

US4926946AMay 22, 1990

Pendent style sprinkler with cover

CENTRAL SPRINKLER CORP60 citations96

US4711099ADec 8, 1987

Portable quick chilling device

CENTRAL SPRINKLER CORP75 citations95

US5494113AFeb 27, 1996

Sprinklers with shape-memory alloy actuators

CENTRAL SPRINKLER CORP56 citations93

US4991656AFeb 12, 1991

Quick release valve for sprinkler head

CENTRAL SPRINKLER CORP28 citations93

US4854342AAug 8, 1989

Clapper seal for dry pipe valve

CENTRAL SPRINKLER CORP42 citations93

US4732216AMar 22, 1988

Quick release mechanism for sprinkler head

CENTRAL SPRINKLER CORP51 citations93

US5080176AJan 14, 1992

Directly mounted pendent-style sprinklers and covers

CENTRAL SPRINKLER CORP52 citations92

US4739835AApr 26, 1988

Quick response glass bulb sprinkler

CENTRAL SPRINKLER CORP40 citations91

USD318096SJul 9, 1991

Ceiling cover for pendent style sprinklers

CENTRAL SPRINKLER CORP10 citations74

US4957169ASep 18, 1990

Sprinkler valve assembly

CENTRAL SPRINKLER CORP8 citations74

US4830115AMay 16, 1989

Valve assembly for sprinkler head

CENTRAL SPRINKLER CORP16 citations74

RELIABLE AUTOMATIC SPRINKLER CO INC

15 patents

US10493307B2Dec 3, 2019

Flexible dry sprinklers

RELIABLE AUTOMATIC SPRINKLER CO INC5 citations84

US10391343B2Aug 27, 2019

Flexible dry sprinklers

RELIABLE AUTOMATIC SPRINKLER CO INC4 citations84

US11596822B2Mar 7, 2023

Flexible dry sprinkler

RELIABLE AUTOMATIC SPRINKLER CO INC2 citations73

US11578827B2Feb 14, 2023

Fire protection sprinkler with a push-in connection

RELIABLE AUTOMATIC SPRINKLER CO INC4 citations73

US10335621B2Jul 2, 2019

Flexible dry sprinklers

RELIABLE AUTOMATIC SPRINKLER CO INC1 citations73

US10046190B2Aug 14, 2018

Horizontal sidewall fire protection sprinkler

RELIABLE AUTOMATIC SPRINKLER CO INC5 citations73

US11892110B2Feb 6, 2024

Fire protection sprinkler with a push-in connection

RELIABLE AUTOMATIC SPRINKLER CO INC2 citations71

US12465795B2Nov 11, 2025

Extended coverage dry pendent storage sprinkler for a storage freezer

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US12409354B2Sep 9, 2025

Arrangement of extended coverage dry pendent storage sprinklers for a storage freezer

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US12201863B2Jan 21, 2025

Flexible dry sprinkler

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US12064656B2Aug 20, 2024

Arrangement of extended coverage dry pendent storage sprinklers for a storage freezer

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US11872427B2Jan 16, 2024

Flexible dry sprinkler

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US11241598B2Feb 8, 2022

Extended coverage dry pendent storage sprinkler for a large storage freezer

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US10933267B2Mar 2, 2021

Flexible dry sprinklers

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations63

US12181089B2Dec 31, 2024

Fire protection sprinkler having a push-in connection

RELIABLE AUTOMATIC SPRINKLER CO INC0 citations61

RELIABLE AUTO SPRINKLER CO

4 patents

US7275603B2Oct 2, 2007

Concealed pendent fire protection sprinkler with drop-down deflector

RELIABLE AUTO SPRINKLER CO68 citations98

US6554077B2Apr 29, 2003

Quick response adjustable automatic sprinkler arrangements

RELIABLE AUTO SPRINKLER CO61 citations96

US6446732B1Sep 10, 2002

VELO ECOH sprinkler arrangement

RELIABLE AUTO SPRINKLER CO72 citations96

US9248327B2Feb 2, 2016

Concealed horizontal sidewall sprinkler

RELIABLE AUTO SPRINKLER CO7 citations83

CENTRAL SPRINKLER COMPANY

3 patents

US5609211AMar 11, 1997

Extended coverage automatic ceiling sprinkler

CENTRAL SPRINKLER COMPANY152 citations97

US6868917B2Mar 22, 2005

Low pressure, early suppression fast response sprinklers

CENTRAL SPRINKLER COMPANY64 citations96

US6502643B1Jan 7, 2003

Low pressure, early suppression fast response sprinklers

CENTRAL SPRINKLER COMPANY64 citations96

POLAN GEORGE S

2 patents

US8573316B2Nov 5, 2013

Concealed horizontal sidewall sprinkler

POLAN GEORGE S25 citations90

USD667079SSep 11, 2012

Soldered mini-link mechanism

POLAN GEORGE S10 citations83

MULTER THOMAS L

2 patents

US8800673B2Aug 12, 2014

Fire protection sprinklers and systems for attics

MULTER THOMAS L24 citations86

US8162069B2Apr 24, 2012

Automatic fire protection sprinkler with extended body

MULTER THOMAS L5 citations60

(unassigned)

1 patent

US5664630ASep 9, 1997

Extended coverage ceiling sprinklers and systems

109 citations98

CENTRAL SPRINKLER CO

1 patent

US5669449ASep 23, 1997

Directional sprinklers

CENTRAL SPRINKLER CO147 citations95

JIMENEZ JUAN

1 patent

US8776903B2Jul 15, 2014

Lodgment prevention arrangements for fire sprinklers

JIMENEZ JUAN22 citations89

MEYER STEPHEN J

1 patent

US8151897B1Apr 10, 2012

Ordinary hazard extended coverage sidewall sprinklers and systems

MEYER STEPHEN J25 citations89

Showing the top 50 of 51 patents by PatentIndex Score.