McCollum; John D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for McCollum; John D..The latest application filed is for "method for detecting underground conditions".
- McCollum; John D. - Naperville IL
- McCollum; John D. - Munster IN
| Patent | Date |
|---|---|
| Method for detecting underground conditions Grant 4,199,026 - McCollum April 22, 1 | 1980-04-22 |
| Process for recovering and upgrading hydrocarbons from oil shale Grant 4,151,068 - McCollum , et al. April 24, 1 | 1979-04-24 |
| Process for recovering and upgrading hydrocarbons from tar sands Grant 4,005,005 - McCollum , et al. January 25, 1 | 1977-01-25 |
| Process for upgrading a hydrocarbon fraction Grant 3,989,618 - McCollum , et al. November 2, 1 | 1976-11-02 |
| Process for recovering upgraded products from coal Grant 3,988,238 - McCollum , et al. October 26, 1 | 1976-10-26 |
| Process for recovering upgraded products from coal Grant 3,983,028 - McCollum , et al. September 28, 1 | 1976-09-28 |
| Process for upgrading a hydrocarbon fraction Grant 3,960,708 - McCollum , et al. June 1, 1 | 1976-06-01 |
| Process for upgrading a hydrocarbon fraction Grant 3,960,706 - McCollum , et al. June 1, 1 | 1976-06-01 |
| Process for recovering and upgrading hydrocarbons from oil shale and tar sands Grant 3,948,755 - McCollum , et al. April 6, 1 | 1976-04-06 |
| Process for recovering and upgrading hydrocarbons from oil shale and tar sands Grant 3,948,754 - McCollum , et al. April 6, 1 | 1976-04-06 |
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