Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9086500 | Apparatus and method for pulsed neutron measurement | Rafay Z. Ansari, Elton Frost, Jr., David M. Chace, W. Allen Gilchrist | 2015-07-21 |
| 8903658 | Apparatus and method for measuring downhole fluid composition and properties | Roger Marsh, David M. Chace, Rafay Z. Ansari | 2014-12-02 |
| 8853618 | Time dependent measurement of formation properties using pulsed neutron generators | Margarete M. Kopal, Loren P. Roberts | 2014-10-07 |
| 8695728 | Formation evaluation using a bit-based active radiation source and a gamma ray detector | Tu Tien Trinh, Eric C. Sullivan, David A. Curry, Xiaomin Cheng, Yi Liu | 2014-04-15 |
| 8525103 | Method for hydrocarbon saturation and hydraulic frac placement | David M. Chace, Rafay Z. Ansari, Elton Frost, Jr., W. Allen Gilchrist, Randy L. Evans | 2013-09-03 |
| 8502135 | Method for through-casing 3-phase saturation determination | David M. Chace, Rafay Z. Ansari, W. Allen Gilchrist, Elton Frost, Jr. | 2013-08-06 |
| 8481920 | Apparatus and method for determining formation density from nuclear density measurements made using sensors at more than one location | W. Allen Gilchrist, Eric C. Sullivan, Tu Tien Trinh, Yi Liu | 2013-07-09 |
| 8471197 | Pulsed neutron based monitoring of CO2 in enhanced recovery and sequestration projects | Daniel T. Georgi, W. Allen Gilchrist, Xiaogang Han | 2013-06-25 |
| 8440961 | Gamma ray generator | W. Allen Gilchrist | 2013-05-14 |
| 8436294 | Method for taking gamma-gamma density measurements | W. Allen Gilchrist | 2013-05-07 |
| 6526120 | X-ray flow rate measurement system for materials, including agricultural materials and food products | Joseph N. Gray, Selcuk Arslan | 2003-02-25 |