Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9228740 | Annular injector assembly and methods of assembling same | John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Roger Ma, David R. Matthews +1 more | 2016-01-05 |
| 8828109 | Method and apparatus for assembling injection devices | John Saunders Stevenson, John Duckett Winter, Kenneth M. Sprouse, David R. Matthews | 2014-09-09 |
| 8662408 | Annular injector assembly and methods of assembling the same | John Saunders Stevenson, Robert Michael Zirin, Raymond Douglas Steele, Roger Ma, David R. Matthews +1 more | 2014-03-04 |
| 5720854 | Purge feeding means and method | Vahan Avetisian, Craig J. Castagnoli, Suk-Bae Cha | 1998-02-24 |
| 5433018 | Purge feeding means and method | Vahan Avetisian, Craig J. Castagnoli, Suk-Bae Cha | 1995-07-18 |
| 5423950 | Method and reactor for producing tire oil | Vahan Avetisian, Robert S. Burton, III, Craig J. Castagnoli, Suk-Bae Cha, Kenneth Scott Lee +1 more | 1995-06-13 |