Inventor · disambiguated record
Richard D. Hembree
Also filed as: HEMBREE RICHARD · HEMBREE RICHARD D · HEMBREE RICHARD DAVID
22 granted patents·9 pending applications·1,052 citations·filing 1987–2025
97Inventor score
Top patents by PatentIndex Score
31 records- 0196US5527451AWater treatment device with volume totalization valveRECOVERY ENG INC·Filed 1994·Granted Jun 18, 1996·141 cites·34 claims
- 0295USD358868SFaucet mounted water treatment deviceRECOVERY ENG INC·Filed 1994·Granted May 30, 1995·56 cites·1 claims
- 0394US6565749B1Microorganism filter and method for removing microorganism from waterPROCTER & GAMBLE·Filed 2000·Granted May 20, 2003·154 cites·26 claims
- 0493US5536394AEnd of life mechanism for water treatment cartridgeRECOVERY ENG INC·Filed 1994·Granted Jul 16, 1996·135 cites·16 claims
- 0593US5106500APortable water purification system including a filter cleaning mechanismRECOVERY ENG INC·Filed 1990·Granted Apr 21, 1992·97 cites·13 claims
- 0692US7425120B2Diaphragm position control for hydraulically driven pumpsWANNER ENGINEERING·Filed 2005·Granted Sep 16, 2008·22 cites·10 claims
- 0792USD377515SWater filter cartridgeRECOVERY ENG INC·Filed 1994·Granted Jan 21, 1997·45 cites·1 claims
- 0892US5525214AFilter cartridge for water treatment deviceRECOVERY ENG INC·Filed 1994·Granted Jun 11, 1996·64 cites·7 claims
- 0990US7467582B2Pump diaphragm rupture detectionWANNER ENGINEERING·Filed 2005·Granted Dec 23, 2008·14 cites·38 claims
- 1088US7665974B2Diaphragm pump position control with offset valve axisWANNER ENGINEERING·Filed 2007·Granted Feb 23, 2010·13 cites·21 claims
- 1188US5268093APortable water purification systemRECOVERY ENG INC·Filed 1992·Granted Dec 7, 1993·70 cites·11 claims
- 1287US5785844AEnd of life mechanism for water treatment cartridgeRECOVERY ENG INC·Filed 1996·Granted Jul 28, 1998·59 cites·16 claims
- 1383US6941853B2Pump diaphragm rupture detectionWANNER ENGINEERING·Filed 2003·Granted Sep 13, 2005·21 cites·30 claims
- 1482US7101158B2Hydraulic balancing magnetically driven centrifugal pumpWANNER ENGINEERING·Filed 2003·Granted Sep 5, 2006·31 cites·23 claims
- 1580US6899530B2Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinderWANNER ENGINEERING·Filed 2002·Granted May 31, 2005·20 cites·11 claims
- 1677US4793153AEnergy recovery apparatusRECOVERY ENG INC·Filed 1987·Granted Dec 27, 1988·35 cites·7 claims
- 1776US7090474B2Diaphragm pump with overfill limiterWANNER ENGINEERING·Filed 2003·Granted Aug 15, 2006·16 cites·9 claims
- 1869US6241103B1Filter cartridge for water treatment deviceRECOVERY ENG INC·Filed 1996·Granted Jun 5, 2001·24 cites·9 claims
- 1959US4902207AEnergy recovery apparatusRECOVERY ENG INC·Filed 1988·Granted Feb 20, 1990·18 cites·10 claims
- 2059US2025116270A1Balanced pressure seal for high pressure pumpsWANNER ENGINEERING·Filed 2024·Application pending·0 cites
- 2157US12326142B2Diaphragm position control systemWANNER ENGINEERING·Filed 2022·Granted Jun 10, 2025·0 cites·10 claims
- 2256US2025376980A1Diaphragm pump and valve assembly for a diaphragm pumpWANNER ENGINEERING·Filed 2025·Application pending·0 cites
- 2353US2024418282A1Valve with replaceable hard insertsWANNER ENGINEERING·Filed 2024·Application pending·0 cites
- 2452US2015118078A1Diaphragm cartridge and pump having a diaphragm cartridgeWANNER ENGINEERING·Filed 2014·Application pending·0 cites
- 2552US2015118082A1Check valve cartridge for pumpWANNER ENGINEERING·Filed 2014·Application pending·0 cites
- 2649US4945725ADifferential-area piston type mixed-phase motorsRECOVERY ENG INC·Filed 1988·Granted Aug 7, 1990·17 cites·12 claims
- 2746US9964106B2Diaphragm pump with dual spring overfill limiterWANNER ENGINEERING·Filed 2015·Granted May 8, 2018·0 cites·9 claims
- 2845US2003034285A1Filter cartridge for water treatment devicePUR WATER PURIFICATION PROD·Filed 2002·Application pending·0 cites
- 2944US2018306179A1Zero pulsation pumpWANNER ENGINEERING·Filed 2017·Application pending·0 cites
- 3044US2018372083A1Hydraulic diaphragm controlWANNER ENGINEERING·Filed 2017·Application pending·0 cites
- 3142US2001054583A1Filter cartridge for water treatment deviceRECOVERY ENG INC·Filed 2001·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →