Issued Patents All Time
Showing 76–100 of 135 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666268 | Methods and oil-based settable drilling fluid compositions for drilling and cementing wells | James E. Griffith, Jiten Chatterji, John L. Dennis, Jr. | 2003-12-23 |
| 6641660 | Stable well cementing methods and compositions | Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis, Ronald J. Crook | 2003-11-04 |
| 6593402 | Resilient well cement compositions and methods | Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy | 2003-07-15 |
| 6555507 | Sealing subterranean zones | Jiten Chatterji, Roger S. Cromwell | 2003-04-29 |
| 6547871 | Foamed well cement slurries, additives and methods | Jiten Chatterji, Roger S. Cromwell, Chad Brenneis, Dennis W. Gray, Frank Zamora | 2003-04-15 |
| 6516883 | Methods of cementing pipe in well bores and low density cement compositions therefor | Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis | 2003-02-11 |
| 6516884 | Stable well cementing methods and compositions | Jiten Chatterji, Roger S. Cromwell, Darrel C. Brenneis, Ronald J. Crook | 2003-02-11 |
| 6503870 | Sealing subterranean zones | James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. | 2003-01-07 |
| 6500252 | High strength foamed well cement compositions and methods | Jiten Chatterji, Frank Zamora, Clyde R. Anderson, Billy Bennett, Roger S. Cromwell | 2002-12-31 |
| 6460632 | Methods of drilling well bores | Jiten Chatterji, Roger S. Cromwell, Frank Zamora, Ronald J. Crook | 2002-10-08 |
| 6448206 | Sealing subterranean zones | James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. | 2002-09-10 |
| 6417142 | Defoaming methods and compositions | Jiten Chatterji, Roger S. Cromwell, Frank Zamora | 2002-07-09 |
| 6401817 | Sealing subterranean zones | James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. | 2002-06-11 |
| 6367549 | Methods and ultra-low density sealing compositions for sealing pipe in well bores | Jiten Chatterji, Roger S. Cromwell, Dennis W. Gray, Ronald J. Crook, Frank Zamora | 2002-04-09 |
| 6367550 | Foamed well cement slurries, additives and methods | Jiten Chatterji, Roger S. Cromwell, Chad Brenneis, Dennis W. Gray, Frank Zamora | 2002-04-09 |
| 6364945 | Methods and compositions for forming permeable cement sand screens in well bores | Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy, Philip D. Nguyen, David L. Brown | 2002-04-02 |
| 6350309 | Methods and compositions for cementing pipe strings in well bores | Jiten Chatterji, Roger S. Cromwell, Robert D. Kuhlman | 2002-02-26 |
| 6330917 | Resilient well cement compositions and methods | Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy | 2001-12-18 |
| 6328106 | Sealing subterranean zones | James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. | 2001-12-11 |
| 6321841 | Methods of sealing pipe strings in disposal wells | Larry S. Eoff, Jiten Chatterji, Roger S. Cromwell | 2001-11-27 |
| 6297202 | Defoaming compositions and methods | Jiten Chatterji, Roger S. Cromwell | 2001-10-02 |
| 6271181 | Sealing subterranean zones | Jiten Chatterji, Roger S. Cromwell | 2001-08-07 |
| 6268406 | Well cementing methods using compositions containing liquid polymeric additives | Jiten Chatterji, Frank Zamora, Rita McKinley | 2001-07-31 |
| 6244344 | Methods and compositions for cementing pipe strings in well bores | Jiten Chatterji, Roger S. Cromwell, Robert D. Kuhlman | 2001-06-12 |
| 6234251 | Resilient well cement compositions and methods | Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy | 2001-05-22 |