Growing community of inventors

Bergamo, Italy

Roberto Zappa

Average Co-Inventor Count = 1.05

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 44

Roberto ZappaGiuseppe De Francesco (1 patent)Roberto ZappaRoberto Zappa (10 patents)Giuseppe De FrancescoGiuseppe De Francesco (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Sematic Italia S.p.a. (6 from 6 patents)

2. Wittur Holding Gmbh (2 from 18 patents)

3. Sematic S.p.a. (2 from 2 patents)


10 patents:

1. 10620617 - Method of maintenance of an electromechanical device

2. 10549955 - Method for the manufacture of a sill for a lift door and sill

3. 10041278 - Block system and assembly for lift doors

4. 9663329 - Lift cages with improved blocking/releasing devices

5. 7854102 - Panel for lift doors

6. 7413058 - Active slide for the doors of lifts' cabins

7. 7129703 - Safety switch with an electronic programmable system

8. 6708448 - Drive unit for doors, especially elevator doors having a non-rectilinear profile

9. 6612405 - Frontal structure for elevator cabins

10. 6474448 - Modular lock for elevator doors

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as of
12/21/2025
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