Inventor · disambiguated record
Piergiorgio Zappelli
Also filed as: PAPPA ROSARIO · ZAPPELLI PIERGIORGIO
9 granted patents·91 citations·filing 1975–1999
87Inventor score
Top patents by PatentIndex Score
9 records- 0178US4008363AProcess for the preparation of adenine derivatives made functional and products obtained therefromSNAM PROGETTI·Filed 1975·Granted Feb 15, 1977·15 cites·2 claims
- 0274US4336188AMethod for the preparation of macromolecularized adenine derivativesSNAM PROGETTI·Filed 1978·Granted Jun 22, 1982·7 cites·5 claims
- 0373US4088639AMacromolecular adenine nucleotide derivativesSNAM PROGETTI·Filed 1975·Granted May 9, 1978·18 cites·3 claims
- 0467US5993768AMesoporous crystalline composition with a high surface area of a tetravalent metal which can be used as catalystENIRICERCHE SPA·Filed 1997·Granted Nov 30, 1999·33 cites·4 claims
- 0565US4199498AMacromolecularized adenine derivativesSNAM PROGETTI·Filed 1978·Granted Apr 22, 1980·5 cites·5 claims
- 0655US5290746ATetravalent metal diphosphonate-phosphite composition in microporous solid crystalline form, with a narrow micropore distributionENIRICERCHE SPA·Filed 1991·Granted Mar 1, 1994·7 cites·16 claims
- 0734US5166380AMesoporous crystalline solid compound of a diphosphonate/phosphite of a tetravalent metal, with a narrow distribution of mesoporesENIRICERCHE SPA·Filed 1991·Granted Nov 24, 1992·5 cites·13 claims
- 0834US4091203AAdenine derivativesSNAM PROGETTI·Filed 1976·Granted May 23, 1978·0 cites·3 claims
- 0920US6238635B1Catalytic process for the decomposition of organic pollutantsENITECNOLOGIE SPA·Filed 1999·Granted May 29, 2001·1 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →