Issued Patents 2011
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083946 | Chemically cross-linked polymeric membranes and method of use | Craig Y. Sabottke, Bal K. Kaul | 2011-12-27 |
| 8076269 | Compressible objects combined with a drilling fluid to form a variable density drilling mud | Richard S. Polizzotti, Ramesh Gupta, Norman Pokutylowicz, Barbara Carstensen, Michael J. Luton +1 more | 2011-12-13 |
| 7997426 | Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes | Bhupender S. Minhas, Michael Mayers, Lloyd S. White, William Alfred Feehley, Jr. | 2011-08-16 |
| 7980329 | System for managing variable density drilling mud | Paul Matthew Spiecker, Pavlin B. Entchev, Ramesh Gupta, Richard S. Polizzotti, Barbara Carstensen +1 more | 2011-07-19 |
| 7972555 | Method for fabricating compressible objects for a variable density drilling mud | Richard S. Polizzotti, Ramesh Gupta, Norman Pokutylowicz, Barbara Carstensen, Michael J. Luton +1 more | 2011-07-05 |