Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5130286 | Catalyst for lower alkane conversion | Michael J. Spangler | 1992-07-14 |
| 5087779 | Hydrocarbon halogenation | Philip O. Nubel, Larry C. Satek, Michael J. Spangler | 1992-02-11 |
| 5087786 | Halogen-assisted conversion of lower alkanes | Philip O. Nubel, Larry C. Satek, Michael J. Spangler, Charles A. Lutman | 1992-02-11 |
| 5081324 | Lower alkane conversion | Michael J. Spangler | 1992-01-14 |
| 5053578 | Lower alkane conversion | Michael J. Spangler | 1991-10-01 |
| 5028577 | Lower alkane conversion catalysts | Michael J. Spangler | 1991-07-02 |
| 4992409 | Catalyst and method of preparing the catalyst for lower alkane conversion | Michael J. Spangler | 1991-02-12 |
| 4968655 | Catalysts for conversion of a lower alkane | James L. Jezl, Michael J. Spangler, Mark L. Winzenburg | 1990-11-06 |
| 4814539 | Conversion of a lower alkane | James L. Jezl, Michael J. Spangler, Mark L. Winzenburg | 1989-03-21 |
| 4754093 | Conversion of a lower alkane | James L. Jezl, Michael J. Spangler | 1988-06-28 |
| 4754091 | Conversion of a lower alkane | James L. Jezl, Michael J. Spangler | 1988-06-28 |
| 4751336 | Conversion of a lower alkane | James L. Jezl, Michael J. Spangler | 1988-06-14 |
| 4287327 | Process for controlling polymer particle size in vapor phase polymerization | Michael J. Spangler | 1981-09-01 |