Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8088716 | Compressible objects having a predetermined internal pressure combined with a drilling fluid to form a variable density drilling mud | Richard S. Polizzotti, Dennis G. Peiffer, Ramesh Gupta, Barbara Carstensen, Michael J. Luton +1 more | 2012-01-03 |
| 8088717 | Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud | Richard S. Polizzotti, Dennis G. Peiffer, Ramesh Gupta, Barbara Carstensen, Michael J. Luton +1 more | 2012-01-03 |
| 8076269 | Compressible objects combined with a drilling fluid to form a variable density drilling mud | Richard S. Polizzotti, Dennis G. Peiffer, Ramesh Gupta, Barbara Carstensen, Michael J. Luton +1 more | 2011-12-13 |
| 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, Dennis G. Peiffer, Ramesh Gupta, Barbara Carstensen, Michael J. Luton +1 more | 2011-07-05 |
| 7677332 | Method and apparatus for managing variable density drilling mud | Paul Matthew Spiecker, Pavlin B. Entchev, Ramesh Gupta, Richard S. Polizzotti, Barbara Carstensen +1 more | 2010-03-16 |
| 7402277 | Method of forming metal foams by cold spray technique | Raghavan Ayer | 2008-07-22 |