P

Inventor

SHUM SAI P

US37 patents
⚠️ This page may combine multiple inventors who share the name “SHUM SAI P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CIBA GEIGY CORP

26 patents
US5276076AJan 4, 1994

Amorphous solid modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite]

CIBA GEIGY CORP17 citations82
US5654455AAug 5, 1997

Tris-phosphite ligands and their use in transitioin metal catalyzed processes

CIBA GEIGY CORP7 citations74
US5512621AApr 30, 1996

Alpha crystalline modification of 2,2',2"-nitrilo triethyl-tris-(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite!

CIBA GEIGY CORP5 citations74
US5489636AFeb 6, 1996

Amorphous modification of 1,1',1"-nitrilo(tri-2-propyl-tris-[2,2'-ethylidene-bis(4,6-di-tert-butylphenyl] phosphite)

CIBA GEIGY CORP12 citations74
US5486641AJan 23, 1996

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]

CIBA GEIGY CORP9 citations74
US5405893AApr 11, 1995

Gamma crystalline modification of 2.2',2"-nitrilo[triethyl-tris-(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite]

CIBA GEIGY CORP7 citations74
US5391799AFeb 21, 1995

Process for the preparation 6-chloro-2,4,8,10-tetra-butyldibenzo[d,f][1,3,2]dioxaphoshepin

CIBA GEIGY CORP14 citations74
US5373040ADec 13, 1994

Amorphous solid modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite]

CIBA GEIGY CORP11 citations74
US5344860ASep 6, 1994

Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl) phosphite]

CIBA GEIGY CORP11 citations74
US5334739AAug 2, 1994

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]

CIBA GEIGY CORP14 citations74
US5331031AJul 19, 1994

Gamma crystalline modification of 2,2', 2"-nitrilo[triethyl-tris(3,3',5,5'-t'-biphenyl-2,2'-diyl) phosphite]

CIBA GEIGY CORP7 citations74
US5326802AJul 5, 1994

Beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-buytl-1,1'-biphenyl-2,2'-diyl)phosphite]

CIBA GEIGY CORP6 citations74
US5292785AMar 8, 1994

Bis-phosphite stabilized compositions

CIBA GEIGY CORP8 citations74
US5185448AFeb 9, 1993

Substituted 1-oxy-4-acyloxypiperidine and 1-oxy-4-acylaminopiperidine stabilizers

CIBA GEIGY CORP18 citations74
US5132426AJul 21, 1992

Substituted 3,7,9-trioxa-1-aza-2,8-diphosphaspiro(4,5)decanes and stabilized compositions

CIBA GEIGY CORP7 citations74
US5075482ADec 24, 1991

Substituted 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4.5]decanes and stabilized compositions

CIBA GEIGY CORP7 citations74
US5624983AApr 29, 1997

Amorphous modification of 1,1',1"-nitrilo(triethyl-tris-[2,2'-methylene-bis(4,6-di-tert-butylphenyl)] phosphite)

CIBA GEIGY CORP3 citations63
US5489635AFeb 6, 1996

Crystalline modification of 1, 1', 1"- Nitril0 (tri-2-propyl-tris-[2,2'- ethylidene-bis (4, 6-di-tert-butylphenyl]phosphite)

CIBA GEIGY CORP3 citations63
US5475042ADec 12, 1995

Cyclic pyrophosphites and compositions stabilized therewith

CIBA GEIGY CORP2 citations63
US5521237AMay 28, 1996

Alkanolamine esters of acyclic phosphites in polyolefin compositions

CIBA GEIGY CORP4 citations61
US5625090AApr 29, 1997

Crystalline modification of 1,1',1"-nitrilo{triethyl-tris-[2,2'-methylene-bis(4,6-di-tert-butylphenyl)]phosphite}

CIBA GEIGY CORP1 citations52
US5534646AJul 9, 1996

Substituted 1,3,2,4-diazadiphosphetidines and compositions stabilized therewith

CIBA GEIGY CORP1 citations52
US5239103AAug 24, 1993

Process of making 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4,5]decanes

CIBA GEIGY CORP1 citations52
US5075484ADec 24, 1991

3H-1,3,2-oxazaphospholidines and stabilized compositions

CIBA GEIGY CORP1 citations51
US5187213AFeb 16, 1993

Stabilized copositions comprising 3,7,9-trioxa-1-aza-2,8-diphosphaspiro[4,5]decanes

CIBA GEIGY CORP0 citations42
US5147910ASep 15, 1992

Compositions stabilized with 3H-1,3,2-oxozaphospholidines

CIBA GEIGY CORP0 citations41

CIBA SC HOLDING AG

6 patents

BASF SE

4 patents

KING ROSWELL E

1 patent