Inventor

Angelo Vallarino

Inventor

Spotorno, IT

Overview

1981–1993

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Cprimary

G03CPhotosensitive materials for photographic purposes50%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests32%

C07CAcyclic or carbocyclic compounds9%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%

Y10TTechnical subjects covered by former us classification5%

PatentTitleYear

5,248,838'Process for preparing bisphenol fluorene compounds'1993 4,990,435'Silver halide photographic element, photographic coating composition and process to prepare an aqueous dispersion of a hydrophobic compound'1991 4,946,768'3-aminoallylidenemalononitrile UV-absorbing compounds and photographic elements containing them'1990 4,863,801'Surface treatment of pet film'1989 4,849,326'White light handeable direct-positive silver halide photographic elements'1989 4,822,728'Silver halide color photographic elements'1989 4,659,647'Photosensitive silver halide material for obtaining half-tone black-and-white images and method for half-tone high-contrast reproduction'1987 4,576,908'Ultraviolet absorber in photographic elements'1986 4,447,525'Process for providing a matt surface on a photographic material and photographic material provided with such matt surface'1984 4,367,284'Photographic elements with improved surface characteristics'1983 4,307,184'Photographic elements containing polymers having aminoallylidenemalononitrile units'1981 4,262,088'Photographic material having a removable antihalo layer'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1993Patents assigned to MINNESOTA MINING & MFG (12)· patent assignee history

1981–1993Based in Spotorno, IT· patent location history

1984Based in Ferrania, IT· patent location history

1986–1991Based in Savona, IT· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MINNESOTA MINING & MFG	12	1981–1993

Locations

Location	Patents	Span
Spotorno, IT	7	1981–1993
Savona, IT	4	1986–1991
Ferrania, IT	1	1984