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USPTO Patent Rankings Data through Dec 31, 2025
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Luigi Cellone — 6 Patents

3M: 6 patents #2,542 of 11,543Top 25%
Savona, IT: #14 of 182 inventorsTop 8%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Luigi Cellone has been granted 6 US patents while listed as an inventor at 3M. The first was granted in 1982 and the most recent in March 2001. Luigi Cellone ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Luigi Cellone in Savona, IT.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6197485 Photographic assemblage comprising a silver halide photographic element sealed in a closed vessel Brunella Fornasari, Giovanni Giusto 2001-03-06 $29,080,000
5482820 Silver halide photographic elements containing biocides Franco Leoncini 1996-01-09 $8,785,000
5077189 Light-sensitive silver halide photographic material Mario Mariotti 1991-12-31 $12,668,000
4477564 Photographic silver halide emulsions, process for preparing the same and their use in color reversal films Marco Loiacono 1984-10-16 $5,062,000
4367284 Photographic elements with improved surface characteristics Angelo Vallarino, Roberto Leoncavallo 1983-01-04 $8,245,000
4357418 Photographic elements with improved surface characteristics 1982-11-02 $3,476,000