Patents by Inventor Dino Ferrari

Dino Ferrari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5318881
    Abstract: This invention relates to a method of processing an image-wise exposed silver halide photographic material wherein said method comprises the following steps:(a) developing the photographic material for 5 to 15 seconds in an aqueous developing solution,(b) fixing the photographic material for 5 to 15 seconds in an aqueous fixing solution, and(c) washing the photographic material for 5 to 20 seconds,wherein both said developing and fixing solutions are free of gelatin hardeners.The method is particularly intended for use in processing radiographic films which:comprise a support and silver halide emulsion layer or layers, at least one of said silver halide emulsion layers containing tabular silver halide grains having an average diameter to thickness ratio of at least 3:1 and highly deionized gelatin, andshow a swelling index lower than 140% and a melting time of from 45 to 120 minutes.The method shows the advantages of lower environmental pollution and shorter processing times.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: June 7, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Marco Bucci, Carlo Marchesano, Dino Ferrari, Carlo Illuminati
  • Patent number: 5302505
    Abstract: Light-sensitive silver halide photographic elements are disclosed comprising a support and silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having an average diameter:thickness ratio of at least 3:1 and highly deionized gelatin and wherein said photographic elements show a swelling index lower than 140% and a melting time of from 45 to 120 minutes.The light-sensitive materials can be advantageously developed in hardener free developer and used in high temperature super rapid processing in automatic processors which include transporting rollers and have good physical and photographic characteristics.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: April 12, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gerolamo Delfino, Milena Debenedetti, Marco Bucci, Dino Ferrari