Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458371 | Organophilic clays and methods for the preparation and use thereof | Samuel J. Lewis | 2016-10-04 |
| 9057011 | Organoclay materials for environmentally sensitive regions | Samuel J. Lewis | 2015-06-16 |
| 8940669 | Density-matched suspensions and associated methods | Sam Lewis, Christopher L. Gordon | 2015-01-27 |
| 8546310 | Density-matched suspensions and associated methods | Sam Lewis, Christopher L. Gordon | 2013-10-01 |
| 8202824 | Variable density treatment fluids | B. Raghava Reddy, Krishna M. Ravi, Dale E. Jamison, Donald L. Whitfill | 2012-06-19 |
| 7824489 | Cement compositions comprising environmentally compatible defoamers and methods of use | Samuel J. Lewis, J. Michael Wilson, Arron L. Karcher | 2010-11-02 |
| 7757766 | Density-matched suspensions and associated methods | Sam Lewis, Christopher L. Gordon | 2010-07-20 |
| 7709420 | Organophilic clays and methods for the preparation and use thereof | Samuel J. Lewis | 2010-05-04 |
| 7543642 | Cement compositions containing flexible, compressible beads and methods of cementing in subterranean formations | B. Raghava Reddy, Krishna M. Ravi | 2009-06-09 |
| 7524369 | Low-density cement compositions, density-reducing additives, and methods of use | William J. Caveny, Richard F. Vargo, Jr., Rickey L. Morgan, John Heaton, David L. Bolado | 2009-04-28 |
| 7510609 | Low-density cement compositions, density-reducing additives, and methods of use | William J. Caveny, Richard F. Vargo, Jr., Rickey L. Morgan, John Heaton, David L. Bolado | 2009-03-31 |
| 7445670 | Foamed cement compositions and associated methods of use | Samuel J. Lewis, Kristi D. Thacker | 2008-11-04 |
| 7399355 | Fluid loss control additive and cement compositions comprising same | Samuel J. Lewis, Christian Spindler, Andrea Fenchl | 2008-07-15 |
| 7398827 | Methods for high temperature lightweight cementing | David Kulakofsky | 2008-07-15 |
| 7390356 | Compositions for high temperature lightweight cementing | David Kulakofsky | 2008-06-24 |
| 7293941 | Methods for cementing using compositions containing salts | Samuel J. Lewis | 2007-11-13 |
| 7273949 | Salts and methods for their preparation | Samuel J. Lewis | 2007-09-25 |
| 7258738 | Cementing compositions including salts | Samuel J. Lewis | 2007-08-21 |
| 7240732 | Dispersant compositions for cement compositions and related methods | Samuel J. Lewis | 2007-07-10 |
| 7191834 | Foamed cement compositions and associated methods of use | Samuel J. Lewis, Kristi D. Thacker | 2007-03-20 |
| 7150322 | Cement compositions comprising environmentally compatible defoamers and methods of use | Samuel J. Lewis, J. Michael Wilson, Arron L. Karcher | 2006-12-19 |
| 7128148 | Well treatment fluid and methods for blocking permeability of a subterranean zone | Larry S. Eoff | 2006-10-31 |
| 7067000 | Methods of cementing using a fluid loss control additive | Samuel J. Lewis, Michael Segura | 2006-06-27 |
| 6739806 | Cement compositions with improved fluid loss characteristics and methods of cementing in subterranean formations | Larry S. Eoff, John M. Wilson, Samuel J. Lewis | 2004-05-25 |
| 4547061 | Electrophotographic imaging apparatus and method particularly for color proofing | Harold J. Weber, Manfred R. Kuehnle, James C. Compton, John N. Poulakis, Kenneth A. Lindblom +1 more | 1985-10-15 |