Issued Patents All Time
Showing 26–50 of 110 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654455 | Tris-phosphite ligands and their use in transitioin metal catalyzed processes | Sai P. Shum | 1997-08-05 |
| 5654434 | Hydrogen peroxide oxidation of 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine | Andrea Smith, Kurt M. Bessonen | 1997-08-05 |
| 5629426 | Carbonate-mediated hydrogen peroxide oxidations of 4-hydroxy-2,2,6,6-tetramethylpiperidine | Andrea Smith, Kurt M. Bessonen | 1997-05-13 |
| 5625090 | "Crystalline modification of 1,1',1""-nitrilo{triethyl-tris-[2,2'-methylene-bis(4,6-di-tert-butylpheny l)]phosphite}" | Sai P. Shum | 1997-04-29 |
| 5624983 | "Amorphous modification of 1,1',1""-nitrilo(triethyl-tris-[2,2'-methylene-bis(4,6-di-tert-butylpheny l)] phosphite)" | Sai P. Shum | 1997-04-29 |
| 5512621 | "Alpha crystalline modification of 2,2',2""-nitrilo triethyl-tris-(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite!" | Sai P. Shum, Paul A. Odorisio | 1996-04-30 |
| 5489635 | "Crystalline modification of 1, 1', 1""- Nitril0 (tri-2-propyl-tris-[2,2'- ethylidene-bis (4, 6-di-tert-butylphenyl]phosphite)" | Sai P. Shum | 1996-02-06 |
| 5489636 | "Amorphous modification of 1,1',1""-nitrilo(tri-2-propyl-tris-[2,2'-ethylidene-bis(4,6-di-tert-butyl phenyl] phosphite)" | Sai P. Shum | 1996-02-06 |
| 5486641 | "Solvent-free process for the preparation of the beta crystalline modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5',-tetra-tert-butyl-1,1'-biphenyl -2,2'-diyl) phosphite]" | Sai P. Shum | 1996-01-23 |
| 5475042 | Cyclic pyrophosphites and compositions stabilized therewith | Sai P. Shum, Andrea Smith | 1995-12-12 |
| 5414028 | Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin stabilizers | Joseph E. Babiarz | 1995-05-09 |
| 5405893 | "Gamma crystalline modification of 2.2',2""-nitrilo[triethyl-tris-(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite]" | Sai P. Shum, Paul A. Odorisio | 1995-04-11 |
| 5391799 | Process for the preparation 6-chloro-2,4,8,10-tetra-butyldibenzo[d,f][1,3,2]dioxaphoshepin | Sai P. Shum | 1995-02-21 |
| 5373040 | "Amorphous solid modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl- 2,2'-diyl)phosphite]" | Sai P. Shum | 1994-12-13 |
| 5356962 | Carbohydrate substituted dibenzo[D,G][1,3,2]dioxaphosphocin stabilizers | Joseph E. Babiarz | 1994-10-18 |
| 5344860 | "Beta crystalline modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl- 2,2'-diyl) phosphite]" | Sai P. Shum | 1994-09-06 |
| 5334739 | "Process an alpha monoclinic crystalline modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl- 2,2'-diyl)phosphite]" | Sai P. Shum, Paul A. Odorisio | 1994-08-02 |
| 5331031 | "Gamma crystalline modification of 2,2', 2""-nitrilo[triethyl-tris(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite]" | Sai P. Shum, Paul A. Odorisio | 1994-07-19 |
| 5326802 | "Beta crystalline modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-buytl-1,1'-biphenyl- 2,2'-diyl)phosphite]" | Sai P. Shum | 1994-07-05 |
| 5321067 | Stabilizers derived from 3,5-dialkyl-4-aminobenzenethiol | — | 1994-06-14 |
| 5310891 | 3,9-carbohydrate substituted 2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5)undecane phosphite stabilizers | Joseph E. Babiarz | 1994-05-10 |
| 5310890 | Carbohydrate substituted dibenzoi(d,g)(1,3,2)dioxaphosphocin stabilizers | Joseph E. Babiarz | 1994-05-10 |
| 5310889 | Carbohydrate substituted dibenzo(d,f)(1,3,2)dioxaphosphepin stabilizers | Joseph E. Babiarz | 1994-05-10 |
| 5292785 | Bis-phosphite stabilized compositions | Sai P. Shum | 1994-03-08 |
| 5276076 | "Amorphous solid modification of 2,2',2""-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl- 2,2'-diyl)phosphite]" | Sai P. Shum | 1994-01-04 |