Patents by Inventor Dino Lavagna

Dino Lavagna 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).

  • Thermosensitive element for thermographic reproduction or registration systems
    Patent number: 3988501
    Abstract: A thermosensitive record medium comprising a base sheet coated with a thermosensitive mixture resulting by mixing together a crystal violet lactone and a phenolic compound in a binding and dispersing agent comprising at least 5% of nonionic cellulose ether. The use of this binder improves the stability of the mixture avoiding any unusual color reaction.
    Type: Grant
    Filed: August 22, 1974
    Date of Patent: October 26, 1976
    Assignee: Ing. C. Olivetti & C., S.p.A.
    Inventors: Franco Knirsch, Dino Lavagna
  • Thermosensitive element, and its employ in the thermographic reproduction or record systems
    Patent number: 3950600
    Abstract: A temperature-responsive record material for use in a thermographic recording and reproducing apparatus comprising a supporting sheet carrying a single layer containing, as the temperature-sensitive composition, a mixture resulting by a dispersion of a basic chromogenic compound and of an acidic compound in a binder having as assential binding agent a latex or a mixture of a latex with a non-ionic cellulose ether.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: April 13, 1976
    Assignee: Ing. C. Olivetti & C., S.p.A.
    Inventors: Franco Knirsch, Dino Lavagna, Giorgio Rossi