Inventor · disambiguated record
Silvestro Costanzi
Also filed as: COSTANZI SILVESTRO
22 granted patents·289 citations·filing 1980–2005
96Inventor score
Files withENICHEM SINTESI13ANIC SPA4ITALMATCH CHEMICALS SPA2COSTANZI SILVESTRO1GREAT LAKES CHEMICAL EUROP1
Top patents by PatentIndex Score
22 records- 0187US5051458AUV stabilizers for organic polymersENICHEM SINTESI·Filed 1989·Granted Sep 24, 1991·50 cites·30 claims
- 0283US7700680B2Polyester compositions flame retarded with halogen-free additivesITALMATCH CHEMICALS SPA·Filed 2004·Granted Apr 20, 2010·22 cites·29 claims
- 0380US4935063AFillers and pigments possessing organic polymer stabilizing properties and a process for their preparationENICHEM SINTESI·Filed 1988·Granted Jun 19, 1990·33 cites·10 claims
- 0480US4888375AOrganic polymer stabilizationENICHEM SINTESI·Filed 1987·Granted Dec 19, 1989·15 cites·24 claims
- 0576US5350786AProcess of (co)polymerization of α-olefins in the presence of stabilizersENICHEM SINTESI·Filed 1993·Granted Sep 27, 1994·28 cites·14 claims
- 0675US5218116AProcedure for the preparation of nitroxyl radicals of sterically hindered aminesENICHEM SINTESI·Filed 1991·Granted Jun 8, 1993·18 cites·21 claims
- 0775US4946880ASilylated U.V. stabilizers containing hindered tertiary aminesENICHEM SINTESI·Filed 1987·Granted Aug 7, 1990·37 cites·21 claims
- 0874US7619022B2Flame retardant polymeric compositionsITALMATCH CHEMICALS SPA·Filed 2005·Granted Nov 17, 2009·2 cites·24 claims
- 0972US4321190APolyolefin compositions stabilized against UV light radiations with open-chain hindered aminesANIC SPA·Filed 1980·Granted Mar 23, 1982·20 cites·4 claims
- 1063US4898946AProcess for the preparation of N-allyl-piperidine derivativesENICHEM SINTESI·Filed 1987·Granted Feb 6, 1990·6 cites·11 claims
- 1156US8178607B2Polyamide compositions flame retarded with aluminiumCOSTANZI SILVESTRO·Filed 2004·Granted May 15, 2012·4 cites·12 claims
- 1254US6056897AStabilizer in solid form for organic polymersGREAT LAKES CHEMICAL EUROP·Filed 1998·Granted May 2, 2000·13 cites·15 claims
- 1354US5270470AProcess for the synthesis of allylated derivatives of 2,2,6,6-tetraalkylpiperidinolsENICHEM SINTESI·Filed 1990·Granted Dec 14, 1993·5 cites·17 claims
- 1453US7608654B2Halogen-free flame retardant polycarbonate compositionsITALAMATCH CHEMICALS S P A·Filed 2003·Granted Oct 27, 2009·3 cites·22 claims
- 1545US5216103ASiliconic u.v. stabilizers containing reactive groupsENICHEM SINTESI·Filed 1991·Granted Jun 1, 1993·6 cites·10 claims
- 1643US5158998AMethod for stabilizing lacquers and coatings, and the stabilized compositions obtainedENICHEM SINTESI·Filed 1991·Granted Oct 27, 1992·8 cites·10 claims
- 1741US4393218A2,2,4,5,5-Pentamethyl-3-formyl-Δ3 -pyrroline and the preparation thereofANIC SPA·Filed 1981·Granted Jul 12, 1983·1 cites·3 claims
- 1839US5462984ASolid blends of stabilizers for polymersENICHEM SINTESI·Filed 1995·Granted Oct 31, 1995·7 cites·14 claims
- 1939US4325864APyrrolidine-ring-containing compositions for use as anti-UV stabilizers in plastics materialsANIC SPA·Filed 1980·Granted Apr 20, 1982·1 cites·5 claims
- 2038US4346188APolyolefin compositions stabilized against UV-radiations by pyrrolidine derivativesANIC SPA·Filed 1980·Granted Aug 24, 1982·4 cites·7 claims
- 2136US4617333AStabilized polyolefinic compositions and stabilizer compounds suitable to that purposeENICHEM SINTESI·Filed 1985·Granted Oct 14, 1986·4 cites·4 claims
- 2227US6180011B1Method for removing hydrocarbon products from water surfacesENICHEM SINTESI·Filed 1997·Granted Jan 30, 2001·2 cites·20 claims
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