Richard D. Hembree

Person

Edina, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Microorganism filter and method for removing microorganism from water
- Patent number 6,565,749
- Issue date May 20, 2003
- The Procter & Gamble Company
- Kenneth C. Hou
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Filter cartridge for water treatment device
- Patent number 6,241,103
- Issue date Jun 5, 2001
- Recovery Engineering, Inc.
- Richard D. Hembree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
End of life mechanism for water treatment cartridge
- Patent number 5,785,844
- Issue date Jul 28, 1998
- Recovery Engineering, Inc.
- James L. Lund
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water filter cartridge
- Patent number D377515
- Issue date Jan 21, 1997
- Recovery Engineering, Inc.
- Richard D. Hembree
- D23 - Environmental heating and cooling
Information Patent Grant
End of life mechanism for water treatment cartridge
- Patent number 5,536,394
- Issue date Jul 16, 1996
- Recovery Engineering, Inc.
- James L. Lund
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water treatment device with volume totalization valve
- Patent number 5,527,451
- Issue date Jun 18, 1996
- Recovery Engineering, Inc.
- Richard D. Hembree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Filter cartridge for water treatment device
- Patent number 5,525,214
- Issue date Jun 11, 1996
- Recovery Engineering, Inc.
- Richard D. Hembree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Faucet mounted water treatment device
- Patent number D358868
- Issue date May 30, 1995
- Recovery Engineering, Inc.
- Richard D. Hembree
- D23 - Environmental heating and cooling
Information Patent Grant
Portable water purification system
- Patent number 5,268,093
- Issue date Dec 7, 1993
- Recovery Engineering, Inc.
- Richard D. Hembree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Portable water purification system including a filter cleaning mech...
- Patent number 5,106,500
- Issue date Apr 21, 1992
- Recovery Engineering, Inc.
- Richard D. Hembree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Differential-area piston type mixed-phase motors
- Patent number 4,945,725
- Issue date Aug 7, 1990
- Recovery Engineering, Inc.
- David E. Carmein
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Energy recovery apparatus
- Patent number 4,902,207
- Issue date Feb 20, 1990
- Recovery Engineering, Inc.
- Richard D. Hembree
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Energy recovery apparatus
- Patent number 4,793,153
- Issue date Dec 27, 1988
- Recovery Engineering, Inc.
- Richard D. Hembree
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
Filter cartridge for water treatment device
- Publication number 20030034285
- Publication date Feb 20, 2003
- PUR Water Purification Products
- Richard D. Hembree
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter cartridge for water treatment device
- Publication number 20010054583
- Publication date Dec 27, 2001
- Recovery Engineering, Inc.
- Richard D. Hembree
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Richard D. Hembree

Person

Patents Grantslast 30 patents

Microorganism filter and method for removing microorganism from water

Filter cartridge for water treatment device

End of life mechanism for water treatment cartridge

Water filter cartridge

End of life mechanism for water treatment cartridge

Water treatment device with volume totalization valve

Filter cartridge for water treatment device

Faucet mounted water treatment device

Portable water purification system

Portable water purification system including a filter cleaning mech...

Differential-area piston type mixed-phase motors

Energy recovery apparatus

Energy recovery apparatus

Patents Applicationslast 30 patents

Filter cartridge for water treatment device

Filter cartridge for water treatment device