Ralph Larson

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Bayport, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Brine fill apparatus for water softener
- Patent number 6,284,132
- Issue date Sep 4, 2001
- Ecowater Systems, Inc.
- Jeffrey A. Zimmerman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Permanganate feeder for iron filter
- Patent number 6,210,646
- Issue date Apr 3, 2001
- Ecowater Systems, Inc.
- Ralph H. Larson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Plastic coated valve rotor and a method of manufacturing
- Patent number 6,085,788
- Issue date Jul 11, 2000
- Ecowater Systems, Inc.
- Ralph H. Larson
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Plastic coated valve rotor and a method of manufacturing
- Patent number 5,867,900
- Issue date Feb 9, 1999
- Ecowater Systems, Inc.
- Ralph H. Larson
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Liquid filling and level sensing apparatus
- Patent number 4,317,475
- Issue date Mar 2, 1982
- Nordson Corporation
- Cardell E. Miller
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...

Patents Applicationslast 30 patents

Information Patent Application
Fluid flow controlling valve having seal with reduced leakage
- Publication number 20060137986
- Publication date Jun 29, 2006
- Pionetics Corporation
- James Crawford Holmes
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Controller for salt dosage for a water softener and method of regen...
- Publication number 20040144702
- Publication date Jul 29, 2004
- EcoWater Systems, Inc.
- Jeffrey A. Zimmerman
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Controller for salt dosage for a water softener and method of regen...
- Publication number 20010023841
- Publication date Sep 27, 2001
- Jeffrey A. Zimmerman
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL