Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7699563 | Landfill and method of decomposing refuse in a landfill | Murugappan Subbarayan, John O'Keefe, Jan M. O'Keefe | 2010-04-20 |
| 7347648 | Landfills and methods of operating a landfill | Murugappan Subbarayan, John O'Keefe, Jan M. O'Keefe | 2008-03-25 |