Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11447681 | Aqueous silica dispersion | Sairam KS Pindiprolu, Sudhir Maruti Nimane | 2022-09-20 |
| 9587155 | Emulsion breakers including polyester functionalities | Liangwei Qu, Scot Harris Bodnar, Carlos Lizarazo | 2017-03-07 |
| 9567509 | Low dosage polymeric naphthenate inhibitors | Peter in't Veld | 2017-02-14 |
| 7238733 | Storable water-silica suspensions and methods | Bach Dao | 2007-07-03 |
| 7060129 | Process for controlling gas migration during well cementing | Bach Dao, Ewout Biezen, Thien Van Pham | 2006-06-13 |
| 6978835 | Methods of cementing in subterranean formations | B. Raghava Reddy, Dennis W. Gray, Bryan K. Waugh | 2005-12-27 |
| 6953090 | Cementing subterranean zones using cement compositions containing biodegradable dispersants | Christian Spindler, Gregor Keilhofer, Johann Plank | 2005-10-11 |
| 6936574 | Process for controlling gas migration during well cementing | Bach Dao, Ewout Biezen, Thien Van Pham | 2005-08-30 |
| 6814798 | Storable water-microsphere suspensions for use in well cements and methods | Bach Dao | 2004-11-09 |
| 6811603 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener, James A. Braden, Bach Dao | 2004-11-02 |
| 6800128 | Whey protein retarder | Bach Dao, Marcel Rietjens | 2004-10-05 |
| 6776237 | Lightweight well cement compositions and methods | Bach Dao, Krishna M. Ravi, Christine Noik, Alain Rivereau | 2004-08-17 |
| 6730636 | Environmentally acceptable well cement fluid loss control additives, compositions and methods | Bach Dao, Mohand Melbouci | 2004-05-04 |
| 6644405 | Storable water-microsphere suspensions for use in well cements and methods | Bach Dao | 2003-11-11 |
| 6631766 | Methods, well cement compositions and lightweight additives therefor | Lance E. Brothers, Krista L. Keener, James A. Braden, Bach Dao | 2003-10-14 |
| 6626992 | Environmentally acceptable well cement fluid loss control additives, compositions, and methods | Bach Dao, Mohand Melbouci | 2003-09-30 |
| 6610140 | Delayed thixotropic cement compositions and methods | Bach Dao | 2003-08-26 |
| 6591909 | Whey protein retarder | Bach Dao, Marcel Rietjens | 2003-07-15 |
| 6562122 | Lightweight well cement compositions and methods | Bach Dao, Krishna M. Ravi, Christine Noik, Alain Rivereau | 2003-05-13 |
| 6457523 | Delayed thixotropic cement compositions and methods | Bach Dao | 2002-10-01 |
| 6405801 | Environmentally acceptable well cement fluid loss control additives, compositions and methods | Bach Dao, Mohand Melbouci | 2002-06-18 |
| 6182758 | Dispersant and fluid loss control additives for well cements, well cement compositions and methods | — | 2001-02-06 |
| 5588488 | Cementing multi-lateral wells | Zacharias Xenakis, Daniel L. Bour, Jerry D. Childs | 1996-12-31 |