Raymond G. Ziehm

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Littleton, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Water conservation via convective circulation
- Patent number 9,964,315
- Issue date May 8, 2018
- Raymond G. Ziehm
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Hot water circulation system
- Patent number 8,534,310
- Issue date Sep 17, 2013
- Raymond G. Ziehm
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Single chamber water circulator
- Patent number 6,161,567
- Issue date Dec 19, 2000
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Integral water circulation apparatus
- Patent number 5,918,625
- Issue date Jul 6, 1999
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Aspirator water circulation apparatus
- Patent number 5,518,022
- Issue date May 21, 1996
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Dual mode hot water circulation apparatus
- Patent number 5,331,996
- Issue date Jul 26, 1994
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Water Conservation via Convective Circulation
- Publication number 20180128498
- Publication date May 10, 2018
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Application
WATER HEATER WITH PASSIVE AUTOMATIC HOT WATER CIRCULATION THROUGH A...
- Publication number 20100263604
- Publication date Oct 21, 2010
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Application
TANKLESS HEATER INSTANT HOT WATER
- Publication number 20100092164
- Publication date Apr 15, 2010
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING
Information Patent Application
WATER HEATER WITH PASSIVE AUTOMATIC HOT WATER CIRCULATION THROUGH A...
- Publication number 20080006227
- Publication date Jan 10, 2008
- Evergreen Innovation Partners I, LP
- Raymond G. Ziehm
- F24 - HEATING RANGES VENTILATING