Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280703 | Applications of degradable polymer for delayed mechanical changes in wells | — | 2019-05-07 |
| 9708878 | Applications of degradable polymer for delayed mechanical changes in wells | — | 2017-07-18 |
| RE46028 | Method and apparatus for delayed flow or pressure change in wells | — | 2016-06-14 |
| RE45950 | Application of degradable polymers in sand control | — | 2016-03-29 |
| RE45849 | Application of degradable polymers in sand control | — | 2016-01-19 |
| 8726993 | Method and apparatus for maintaining pressure in well cementing during curing | — | 2014-05-20 |
| 8439108 | Application of degradable polymers in sand control | — | 2013-05-14 |
| 8215385 | Application of degradable polymers in sand control | — | 2012-07-10 |
| 8025104 | Method and apparatus for delayed flow or pressure change in wells | — | 2011-09-27 |
| 7625846 | Application of degradable polymers in well fluids | — | 2009-12-01 |
| 7569523 | Method and materials for hydraulic fracturing of wells using a liquid degradable thermoplastic polymer | — | 2009-08-04 |
| 7476644 | Method and materials for hydaulic fracturing of wells | — | 2009-01-13 |
| 7069994 | Method for hydraulic fracturing with squeeze pressure | — | 2006-07-04 |
| 6949491 | Method and materials for hydraulic fracturing of wells | — | 2005-09-27 |
| 5509474 | Temperature logging for flow outside casing of wells | — | 1996-04-23 |
| 5353873 | Apparatus for determining mechanical integrity of wells | — | 1994-10-11 |
| 4716964 | Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion | Steven R. Erbstoesser, Richard G. Sinclair, Michael M. Epstein | 1988-01-05 |
| 4526695 | Composition for reducing the permeability of subterranean formations | Steven R. Erbstoesser, Richard G. Sinclair, Michael M. Epstein | 1985-07-02 |
| 4475591 | Method for monitoring subterranean fluid communication and migration | — | 1984-10-09 |
| 4448250 | Method of freeing a hollow tubular member | Leon Robinson | 1984-05-15 |
| 4407365 | Method for preventing annular fluid flow | — | 1983-10-04 |
| 4387769 | Method for reducing the permeability of subterranean formations | Steven R. Erbstoesser, Richard G. Sinclair, Michael M. Epstein | 1983-06-14 |
| 4359391 | Well treatment with emulsion dispersions | William M. Salathiel, Thomas W. Muecke, Norman N. Li | 1982-11-16 |
| 4233165 | Well treatment with emulsion dispersions | William M. Salathiel, Thomas W. Muecke, Norman N. Li | 1980-11-11 |