Paul R. Erickson

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Glendale, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing a metal nutrient for an animal feed
- Patent number 6,352,714
- Issue date Mar 5, 2002
- DER, Inc.
- Paul R. Erickson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and apparatus for treating chrome leather waste
- Patent number 5,401,833
- Issue date Mar 28, 1995
- United States Leather Holdings, Inc.
- Paul R. Erickson
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Recovery of sulfides from tannery waste liquor
- Patent number 5,328,677
- Issue date Jul 12, 1994
- PVL Limited Partnership I
- Richard G. Waite
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and system for recovering coal fines from pipe line coal slurry
- Patent number 4,544,490
- Issue date Oct 1, 1985
- Rexnord Inc.
- Paul R. Erickson
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water purification process
- Patent number 4,280,913
- Issue date Jul 28, 1981
- Envirex, Inc.
- Charles S. Applegate
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Closed alkaline wash water system for cleaning metal parts
- Patent number 3,930,879
- Issue date Jan 6, 1976
- Rexnord Inc.
- Paul R. Erickson
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...