Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10156097 | Downhole tool for increasing a wellbore diameter | Madapusi K. Keshavan, Iain Cooper | 2018-12-18 |
| 9617791 | Sidetracking system and related methods | Shantanu N. Swadi | 2017-04-11 |
| 9512680 | Coring bit to whipstock systems and methods | John E. Campbell, Shantanu N. Swadi, Charles H. Dewey, Robert Utter | 2016-12-06 |
| 8967270 | Rigless abandonment system | Lawrence Barr, Anton J. Dach, III | 2015-03-03 |
| 8893826 | Optimized reaming system based upon weight on tool | — | 2014-11-25 |
| 8881845 | Expandable window milling bit and methods of milling a window in casing | Charles H. Dewey, John E. Campbell | 2014-11-11 |
| 8613331 | On demand actuation system | — | 2013-12-24 |
| 8459357 | Milling system and method of milling | Charles H. Dewey | 2013-06-11 |
| 8327954 | Optimized reaming system based upon weight on tool | — | 2012-12-11 |
| 8186458 | Expandable window milling bit and methods of milling a window in casing | Charles H. Dewey, John E. Campbell | 2012-05-29 |
| 8122977 | Cutting device with multiple cutting structures | Charles H. Dewey | 2012-02-28 |
| 7762330 | Methods of making multiple casing cuts | James E. Saylor, III, Thomas D. Helbert, Marc Henderson, Joeseph V. Hebert, Trygve Berthelsen +4 more | 2010-07-27 |
| 7753139 | Cutting device with multiple cutting structures | Charles H. Dewey | 2010-07-13 |
| 7699120 | On demand actuation system | — | 2010-04-20 |
| 7207401 | One trip milling system | Charles H. Dewey | 2007-04-24 |
| 6752211 | Method and apparatus for multilateral junction | Charles H. Dewey, Glenn L. Allison, Bruce McGarian | 2004-06-22 |
| 6612383 | Method and apparatus for milling well casing and drilling formation | Charles H. Dewey | 2003-09-02 |
| 5010967 | Milling apparatus with replaceable blades | — | 1991-04-30 |
| 4696502 | Dual string packer mill | — | 1987-09-29 |
| 4693328 | Expandable well drilling tool | John H. Furse, Charles H. Dewey | 1987-09-15 |
| 4660657 | Underreamer | John H. Furse, Charles H. Dewey | 1987-04-28 |