Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5266726 | Sterically hindered oxime color improvers for polyolefin processing | Stephen D. Pastor | 1993-11-30 |
| 5244953 | Substituted 1-aminonaphthalenes and stabilized compositions | David E. Chasen, Stephen D. Pastor | 1993-09-14 |
| 5239103 | Process of making 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4,5]decanes | Raymond Seltzer, Sai P. Shum, Stephen D. Pastor | 1993-08-24 |
| 5230816 | 3,9-bis(dialkylamino)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecanes and stabilized compositions | Stephen D. Pastor | 1993-07-27 |
| 5187213 | Stabilized copositions comprising 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4,5]decanes | Raymond Seltzer, Sai P. Shum, Stephen D. Pastor | 1993-02-16 |
| 5185448 | Substituted 1-oxy-4-acyloxypiperidine and 1-oxy-4-acylaminopiperidine stabilizers | Sai P. Shum | 1993-02-09 |
| 5162408 | N-alkenyl substituted amine-N-oxide stabilizers | Joseph E. Babiarz | 1992-11-10 |
| 5160647 | Substituted 1-aminonaphthalenes and stabilized compositions | David Eliezer Chasan, Stephen D. Pastor | 1992-11-03 |
| 5147909 | Substituted 1,3,2-benzoxazaphospholidines and stabilized compositions | Stephen D. Pastor, James L. Hyun | 1992-09-15 |
| 5147910 | Compositions stabilized with 3H-1,3,2-oxozaphospholidines | James L. Hyun, Sai P. Shum, Raymond Seltzer | 1992-09-15 |
| 5147911 | Compositions stabilized with poly-1,3,2-oxazaphospholidines | Peter Hofmann, Glen T. Cunkle, Don Sabrsula | 1992-09-15 |
| 5134183 | Sterically hindered oxime color improvers for polyolefin processing | Stephen D. Pastor | 1992-07-28 |
| 5132426 | Substituted 3,7,9-trioxa-1-aza-2,8-diphosphaspiro(4,5)decanes and stabilized compositions | Raymond Seltzer, Sai P. Shum, Stephen D. Pastor | 1992-07-21 |
| 5081300 | N-alkenyl substituted amine-N-oxide stabilizers | Joseph E. Babiarz | 1992-01-14 |
| 5075481 | Poly-1,3,2-oxazaphospholidine stabilizers | Peter Hofmann, Glen T. Cunkle, Don Sabrsula | 1991-12-24 |
| 5075484 | 3H-1,3,2-oxazaphospholidines and stabilized compositions | James L. Hyun, Sai P. Shum, Raymond Seltzer | 1991-12-24 |
| 5075483 | Substituted 1,3,2-benzoxazaphospholidines and stabilized compositions | Stephen D. Pastor, James L. Hyun | 1991-12-24 |
| 5075482 | Substituted 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4.5]decanes and stabilized compositions | Raymond Seltzer, Sai P. Shum, Stephen D. Pastor | 1991-12-24 |
| 5045583 | O-alkenyl substituted hydroxylamine stabilizers | Joseph E. Babiarz, Roger Meuwly, Werner Rutsch | 1991-09-03 |
| 5019612 | 6-(4-hydroxyphenyl)-4,5-dihydro-3(2H)-pyridazinones and stabilized compositions | Stephen D. Pastor | 1991-05-28 |
| 5013510 | Process for preparing long chain N,N-dialkylhydroxylamines by direct oxidation | Stephen D. Pastor | 1991-05-07 |
| 4888423 | 6-(4-Hydroxyphenyl)-4,5-dihydro-3(2h)-pyridazinones and stabilized compositions | Steven D. Pastor | 1989-12-19 |
| 4831178 | Aliphatic esters of 1,3,2-oxazaphospholidines | Stephen D. Pastor, James L. Hyun | 1989-05-16 |
| 4812501 | 1,3,2-oxazaphospholidine stabilizers | Stephen D. Pastor, James L. Hyun | 1989-03-14 |
| 4751319 | 1,3,2-oxazaphospholdine stabilizers | Stephen D. Pastor, James L. Hyun | 1988-06-14 |