Patents by Inventor Roberta Bellunghi

Roberta Bellunghi 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).

  • Silver halide tabular grain emulsion
    Patent number: 6878512
    Abstract: The present invention relates to a new silver halide tabular grain emulsion, wherein said silver halide emulsion comprises tabular grains having average thickness lower than 0.15 ?m, an average diameter of at least 1.20 ?m and an average aspect ratio of at least 8:1, and showing a coefficient of diameter variation COVd within the range of from 31% to 44% and a coefficient of thickness variation COVt lower than 25%.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: April 12, 2005
    Assignee: Ferrania, S.p.A.
    Inventors: Simona Fava, Roberta Bellunghi, Roberta Ganduglia, Luca Ceruti
  • Silver halide tabular grain emulsion
    Publication number: 20040086813
    Abstract: The present invention relates to a new silver halide tabular grain emulsion, wherein said silver halide emulsion comprises tabular grains having average thickness lower than 0.15 &mgr;m, an average diameter of at least 1.20 &mgr;m and an average aspect ratio of at least 8:1, and showing a coefficient of diameter variation COVd within the range of from 31% to 44% and a coefficient of thickness variation COVt lower than 25%.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 6, 2004
    Applicant: Ferrania, S.p.A.
    Inventors: Simona Fava, Roberta Bellunghi, Roberta Ganduglia, Luca Ceruti