Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7232393 | Electrically variable transmission having two planetary gear sets with two fixed interconnections | Norman K. Bucknor, Madhusudan Raghavan | 2007-06-19 |
| 7220200 | Electrically variable transmission arrangement with spaced-apart simple planetary gear sets | Henryk Sowul, Alan G. Holmes, Michael R. Schmidt, Donald Klemen | 2007-05-22 |
| 7220203 | Electrically variable transmission with selective fixed ratio operation | Alan G. Holmes, Michael R. Schmidt, Donald Klemen, Henryk Sowul | 2007-05-22 |
| 7220202 | Electrically variable transmission with improved gradeability | Tejinder Singh, Henryk Sowul | 2007-05-22 |
| 7220201 | Electrically variable transmission having two planetary gear sets with two fixed interconnections and clutch input | Madhusudan Raghavan, Norman K. Bucknor | 2007-05-22 |
| 7192373 | Electrically variable transmission having two planetary gear sets with one fixed interconnection | Norman K. Bucknor, Madhusudan Raghavan, Alan G. Holmes, Patrick B. Usoro | 2007-03-20 |
| 7179187 | Electrically variable transmission having three interconnected planetary gear sets, two clutches and two brakes | Madhusudan Raghavan, Norman K. Bucknor | 2007-02-20 |
| 7179185 | Electrically variable transmission having three interconnected planetary gear sets, two clutches and at least two brakes | Madhusudan Raghavan, Norman K. Bucknor | 2007-02-20 |
| 7179186 | Electrically variable transmission having three interconnected planetary gear sets | Norman K. Bucknor, Madhusudan Raghavan | 2007-02-20 |
| 7172525 | Electrically variable transmission having a mechanical reverse mode | Henryk Sowul, Tejinder Singh | 2007-02-06 |
| 7169074 | Electrically variable transmission having two planetary gear sets with one stationary member | Madhusudan Raghavan, Norman K. Bucknor, Alan G. Holmes | 2007-01-30 |
| 7101298 | Electric variable transmission with de-coupled engine charging in reverse | Henryk Sowul, Donald Klemen | 2006-09-05 |
| 6645121 | Vehicle transmission system for controlling clutch temperature | Peter E. Wu, Joel H. Gunderson | 2003-11-11 |
| 6564876 | Packer | Vladimir Vaynshteyn, Jim B. Benton, Raghu Madhaven, Mitchell G. Willcox, Dinesh R. Patel | 2003-05-20 |
| 6315050 | Packer | Vladimir Vaynshteyn, Jim B. Benton, Raghu Madhavan, Mitchell G. Willcox, Dinesh R. Patel | 2001-11-13 |
| 6186227 | Packer | Vladimir Vaynshteyn, Jim B. Benton, Raghu Madhavan, Mitchell G. Willcox, Dinesh R. Patel | 2001-02-13 |
| 5931232 | Mechanical connection between base pipe and screen and method for use of the same | Ralph H. Echols, Rex D. Presley | 1999-08-03 |
| 5857520 | Backup shoe for well packer | Bryon Mullen | 1999-01-12 |
| 5842522 | Mechanical connection between base pipe and screen and method for use of the same | Ralph H. Echols, Rex D. Presley | 1998-12-01 |
| 5636691 | Abrasive slurry delivery apparatus and methods of using same | Dean S. O'Neal, Sidney J. Guillot, Ronnie D. Finley | 1997-06-10 |
| 5433269 | Retrievable packer for high temperature, high pressure service | — | 1995-07-18 |
| 5311938 | Retrievable packer for high temperature, high pressure service | Colby M. Ross, William David Henderson | 1994-05-17 |
| 5211226 | Metal-to-metal seal for oil well tubing string | William David Henderson, John C. Gano | 1993-05-18 |
| 4886113 | Positive indication shear ring | Colby M. Ross, Frank Giusti, Jr. | 1989-12-12 |
| 4296807 | Crossover tool | Pat M. White | 1981-10-27 |