Roy D. Lister

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Keller, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of concentrating and deodorizing ruminant waste
- Patent number 5,185,087
- Issue date Feb 9, 1993
- Roy D. Lister
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Liquid separator with tangential drive fluid introduction
- Patent number 4,857,197
- Issue date Aug 15, 1989
- Amoco Corporation
- Grant A. Young
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Cyclone and filter belt apparatus for dewatering
- Patent number 4,818,400
- Issue date Apr 4, 1989
- Eagle-Picher industries, Inc.
- Robert G. Russell
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Hydrocyclone having dewatering tube
- Patent number 4,786,412
- Issue date Nov 22, 1988
- Eagle-Picher Industries, Inc.
- Roy D. Lister
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
Information Patent Grant
System for joining sections of a hydrocyclone separator
- Patent number 4,765,887
- Issue date Aug 23, 1988
- Eagle-Picher industries, Inc.
- Roy D. Lister
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...