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For the Inventor, By the Inventor

San Donato Milanese, Italy

Versalis S.p.a.


USPTO Granted Patents = 122

% Expired Patents = 12.3



Trademarks = 23

Forward Citations = 81

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170 inventors (with patents filed for the assignee):

goldMedal Francesco Masi (29 out of 64 patents)

silverMedal Anna Sommazzi (26 out of 50 patents)

bronzeMedal Giovanni Ricci (21 out of 22 patents)

4.  Giuseppe Leone (19 out of 19 patents)

5.  Alessandro Casalini (13 out of 19 patents)

6.  Riccardo Felisari (13 out of 14 patents)

7.  Guido Pampaloni (12 out of 18 patents)

8.  Dario Ghidoni (7 out of 21 patents)

9.  Aldo Longo (7 out of 13 patents)

10.  Alessandro Del Seppia (7 out of 7 patents)

11.  Antonio Ponticiello (6 out of 11 patents)

12.  Stefano Ramello (6 out of 12 patents)

13.  Roberto Buzzoni (6 out of 23 patents)

14.  Giovanni Antonio Fois (5 out of 5 patents)

15.  Paolo Mariani (5 out of 5 patents)


Core Competencies:
Graphene Compositions
Diene Production
Bio-Based Materials
Polymerization Processes
Expandable Polymers
Lignocellulosic Biomass
Vinyl Aromatic Polymers
Catalytic Systems
Omega-Amino-Carboxylic Acids
Plastic Material Treatment
Fermentation Processes
Thermal Insulation

122 patents:

1. 12686879 - Process for the preparation of a sugar product and a fermentation product (2026-07-21),
2. 12668685 - Process for the preparation of styrene-butadiene rubbers comprising recycled rubber powder (2026-06-30),
3. 12595350 - Composition of plastic material and process for treating plastic materials for forming said composition (2026-04-07),
4. 12534586 - Composition containing graphene and graphene nanoplatelets and preparation process thereof (2026-01-27),
5. 12486468 - Method for the preparation of omega-amino-carboxylic acids and derivatives thereof (2025-12-02),
6. 12247095 - Process for preparing random butadiene-isoprene copolymers having a high content of cis-1,4 units (2025-03-11),
7. 12227467 - Process for bio-1,3-butanediol purification from a fermentation broth (2025-02-18),
8. 12157906 - Process for producing a fermentation broth (2024-12-03),
9. 12030222 - Circuit and process for managing transients in a plant for continuous mass production of granulated expandable polymers (2024-07-09),
10. 11912840 - Composition containing graphene and graphene nanoplatelets and preparation process thereof (2024-02-27),
11. 11872548 - Oxo-nitrogenated iron complex, catalytic system comprising said oxo-nitrogenated iron complex and process for the (co)polymerization of conjugated dienes (2024-01-16),
12. 11851385 - Process for producing dienes (2023-12-26),
13. 11840494 - Process for treating polyalkylaromatic hydrocarbons (2023-12-12),
14. 11788104 - Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars (2023-10-17),
15. 11773420 - Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars (2023-10-03),
Versalis S.p.a., headquartered in San Donato Milanese, Italy, is a prominent player in the field of polymer chemistry. The company specializes in the development and production of advanced materials, focusing on innovative technologies such as graphene compositions, diene production, and bio-based materials. Versalis is committed to sustainable practices, leveraging lignocellulosic biomass and enhancing polymerization processes. Their expertise extends to expandable polymers and catalytic systems, positioning them as a leader in the evolving landscape of polymer applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Versalis S.p.a.
122 Patents

#3 in San Donato Milanese

#73 in Italy

#6,551 in the World

San Donato Milanese, IT
San Donato Milanese, Italy

Versalis S.p.a.

Forward Citations = 81

170 inventors:

goldMedal Francesco Masi (29 out of 64 patents)

silverMedal Anna Sommazzi (26 out of 50 patents)

bronzeMedal Giovanni Ricci (21 out of 22 patents)

4.  Giuseppe Leone (19 out of 19 patents)

5.  Alessandro Casalini (13 out of 19 patents)

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