Richard L. Johnson II

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Well treatment fluid compatible self-consolidation particles
- Patent number 5,955,144
- Issue date Sep 21, 1999
- Sanatrol, Inc.
- A. Richard Sinclair
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well treatment fluid compatible self-consolidating particles
- Patent number 5,948,734
- Issue date Sep 7, 1999
- Sanatrol, Inc.
- A. Richard Sinclair
- E21 - EARTH DRILLING MINING
Information Patent Grant
Well treatment fluid compatible self-consolidating particles
- Patent number 5,837,656
- Issue date Nov 17, 1998
- Santrol, Inc.
- A. Richard Sinclair
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composite and reinforced coatings on proppants and particles
- Patent number 5,597,784
- Issue date Jan 28, 1997
- Santrol, Inc.
- A. Richard Sinclair
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composite and reinforced coatings on proppants and particles
- Patent number 5,422,183
- Issue date Jun 6, 1995
- Santrol, Inc.
- A. Richard Sinclair
- E21 - EARTH DRILLING MINING