Roberto Leoncavallo — 1 Patent at 3M

Roberto Leoncavallo has been granted 1 US patent while listed as an inventor at 3M. All of these patents were granted in 1983. Roberto Leoncavallo ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Roberto Leoncavallo in Savona, IT.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4367284	Photographic elements with improved surface characteristics	Luigi Cellone, Angelo Vallarino	1983-01-04	$8,245,000

Roberto Leoncavallo — 1 Patent

Issued Patents All Time

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