Inventor

Piergiorgio Zappelli

Inventor

Monterotondo, IT

Overview

9→

Patents

1977–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 9 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Dprimary

C07DHeterocyclic compounds24%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium24%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry12%

B01DSeparation6%

C01BNon-metallic elements6%

C07HSugars6%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%

C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

PatentTitleYear

6,238,635'Catalytic process for the decomposition of organic pollutants'2001 5,993,768'Mesoporous crystalline composition with a high surface area of a tetravalent metal which can be used as catalyst'1999 5,290,746'Tetravalent metal diphosphonate-phosphite composition in microporous solid crystalline form, with a narrow micropore distribution'1994 5,166,380'Mesoporous crystalline solid compound of a diphosphonate/phosphite of a tetravalent metal, with a narrow distribution of mesopores'1992 4,336,188'Method for the preparation of macromolecularized adenine derivatives'1982 4,199,498'Macromolecularized adenine derivatives'1980 4,091,203'Adenine derivatives'1978 4,088,639'Macromolecular adenine nucleotide derivatives'1978 4,008,363'Process for the preparation of adenine derivatives made functional and products obtained therefrom'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1982Patents assigned to SNAM PROGETTI (5)· patent assignee history

1977–1999Based in Monterotondo, IT· patent location history

1992–1999Patents assigned to ENIRICERCHE SPA (3)· patent assignee history

2001Patents assigned to ENITECNOLOGIE SPA (1)· patent assignee history

2001Based in Canonica d'Adda, IT· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SNAM PROGETTI	5	1977–1982
ENIRICERCHE SPA	3	1992–1999
ENITECNOLOGIE SPA	1	2001

Locations

Location	Patents	Span
Monterotondo, IT	8	1977–1999
Canonica d'Adda, IT	1	2001