Inventor · disambiguated record
Dennis Crabtree
Also filed as: CRABTREE DENNIS · CRABTREE DENNIS W · CRABTREE DENNIS WAYNE
17 granted patents·5 pending applications·242 citations·filing 1995–2024
94Inventor score
Files withWILLIAMS FIRE & HAZARD CONTROL8HYOF LP4CRABTREE DENISE3WILLIAMS FIRE & HAZARD CONTROL INC2BioStar Systems1
Top patents by PatentIndex Score
22 records- 0195US10556837B2Organic liquid fertilizerCRABTREE DENISE·Filed 2019·Granted Feb 11, 2020·10 cites·27 claims
- 0293US11639318B2Organic liquid fertilizerHYOF LP·Filed 2020·Granted May 2, 2023·3 cites·20 claims
- 0392US10889528B2Organic liquid fertilizerLOVE BILL·Filed 2019·Granted Jan 12, 2021·8 cites·20 claims
- 0491US11639317B2Organic liquid fertilizerHYOF LP·Filed 2020·Granted May 2, 2023·3 cites·20 claims
- 0591US10023501B2Organic liquid fertilizer and process of makingCRABTREE DENISE·Filed 2013·Granted Jul 17, 2018·18 cites·11 claims
- 0689US2025011252A1Organic liquid fertilizerHYOF LP·Filed 2024·Application pending·0 cites
- 0784US2023242461A1Organic liquid fertilizerHYOF LP·Filed 2023·Application pending·0 cites
- 0880US5979564AFluid additive supply system for fire fighting mechanismsWILLIAMS FIRE & HAZARD CONTROL·Filed 1997·Granted Nov 9, 1999·49 cites·11 claims
- 0976US5960887ABy-pass eductorWILLIAMS FIRE & HAZARD CONTROL·Filed 1997·Granted Oct 5, 1999·44 cites·9 claims
- 1074US6749027B1Fire fighting nozzle and method including pressure regulation, chemical and education featuresFiled 1998·Granted Jun 15, 2004·35 cites·25 claims
- 1170US2018362414A1Organic liquid fertilizer and process of makingCRABTREE DENISE·Filed 2018·Application pending·0 cites
- 1265US8002203B2Fire fighting nozzle and method including pressure regulation, chemical and eduction featuresWILLIAMS FIRE & HAZARD CONTROL INC·Filed 2005·Granted Aug 23, 2011·3 cites·13 claims
- 1363US7140552B1System for automatic self-proportioning of foam concentrate into fire fighting fluid variable flow conduitWILLIAMS FIRE & HAZARD CONTROL·Filed 2000·Granted Nov 28, 2006·13 cites·13 claims
- 1463US6659187B1Self metering foam proportioning systemWILLIAMS FIRE & HAZARD CONTROL·Filed 2000·Granted Dec 9, 2003·14 cites·16 claims
- 1559US5816328AFluid additive supply system for fire fighting mechanismsWILLIAMS FIRE & HAZARD CONTROL·Filed 1995·Granted Oct 6, 1998·27 cites·21 claims
- 1657US2024416164A1Fire suppressant agent container system with passive coolingWILLIAMS FIRE & HAZARD LLC·Filed 2024·Application pending·0 cites
- 1754US7048207B2Fire fighting nozzle and method including pressure regulation, chemical and eduction featuresWILLIAMS FIRE & HAZARD CONTROL·Filed 2002·Granted May 23, 2006·5 cites·19 claims
- 1850US7784709B1Fire fighting nozzle and method including pressure regulation, chemical and eduction featuresWILLIAMS FIRE & HAZARD CONTROL INC·Filed 2000·Granted Aug 31, 2010·4 cites·27 claims
- 1950US7464766B2Ranger/hybrid automatic self-metering nozzle, with ratio-selectable and flow meter featuresWILLIAMS FIRE & HAZARD CONTROL·Filed 2003·Granted Dec 16, 2008·3 cites·14 claims
- 2045US2013019645A1Organic liquid fertilizer and process of makingBioStar Systems·Filed 2012·Application pending·0 cites
- 2144US7207391B2Selectable fixed flow large scale fire fighting nozzle with selectable additive proportioning and light weight cost effective constructionWILLIAMS FIRE & HAZARD CONTROL·Filed 2004·Granted Apr 24, 2007·3 cites·14 claims
- 2238US8794255B2Additive proportioning systemCRABTREE DENNIS WAYNE·Filed 2012·Granted Aug 5, 2014·0 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Dennis Crabtree files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →