Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446717 | Core-containing sealing assembly | David M. Haugen, Erik P. Eriksen | 2002-09-10 |
| 5353876 | Method and apparatus for sealing the juncture between a verticle well and one or more horizontal wells using mandrel means | Alfred R. Curington, Daniel S. Bangert | 1994-10-11 |
| 5325924 | Method and apparatus for locating and re-entering one or more horizontal wells using mandrel means | Daniel S. Bangert, Alfred R. Curington | 1994-07-05 |
| 5318121 | Method and apparatus for locating and re-entering one or more horizontal wells using whipstock with sealable bores | Mark W. Brockman, Douglas J. Murray, Robert J. McNair, Jeffrey D. Cockrell | 1994-06-07 |
| 5311936 | Method and apparatus for isolating one horizontal production zone in a multilateral well | Robert J. McNair, Mark W. Brockman, Jeffrey D. Cockrell, Alfred R. Curington, Daniel S. Bangert | 1994-05-17 |
| 4804188 | Gold club head | John B. McKee | 1989-02-14 |
| 4653588 | Valve apparatus for controlling communication between the interior of a tubular member and an inflatable element in a well bore | — | 1987-03-31 |