Franco Leoncini — 1 Patent at 3M

Franco Leoncini has been granted 1 US patent while listed as an inventor at 3M. All of these patents were granted in 1996. Franco Leoncini ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Franco Leoncini in Genova, IT.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5482820	Silver halide photographic elements containing biocides	Luigi Cellone	1996-01-09	$8,785,000

Franco Leoncini — 1 Patent

Issued Patents All Time

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