Schroeder, Jr.; Donald E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Schroeder, Jr.; Donald E..The latest application filed is for "method of completing a well".
- Schroeder, Jr.; Donald E. - Littleton CO
| Patent | Date |
|---|---|
| Method of completing a well Grant 6,253,851 - Schroeder, Jr. , et al. July 3, 2 | 2001-07-03 |
| Method of gravel packing a well Grant 5,269,375 - Schroeder, Jr. December 14, 1 | 1993-12-14 |
| Method and means for stabilizing gravel packs Grant 5,127,474 - Schroeder, Jr. , et al. July 7, 1 | 1992-07-07 |
| Method of gravel packing a subterranean well Grant 5,062,484 - Schroeder, Jr. , et al. November 5, 1 | 1991-11-05 |
| Staged screen assembly for gravel packing Grant 4,932,474 - Schroeder, Jr. , et al. June 12, 1 | 1990-06-12 |
| Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleum sulfonates Grant 4,614,623 - Schroeder, Jr. , et al. * September 30, 1 | 1986-09-30 |
| Polymer flow control apparatus Grant 4,510,397 - Schroeder, Jr. April 9, 1 | 1985-04-09 |
| Apparatus and method for preparing polymers Grant 4,464,509 - Schroeder, Jr. August 7, 1 | 1984-08-07 |
| Flooding with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil Grant 4,013,125 - Plummer , et al. March 22, 1 | 1977-03-22 |
| Method for oil recovery by flooding with micellar dispersions containing crude oil sulfonates Grant 3,964,548 - Schroeder, Jr. , et al. June 22, 1 | 1976-06-22 |
| Process for the production of petroleum sulfonate Grant 3,956,372 - Coleman, Jr. , et al. May 11, 1 | 1976-05-11 |
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