Patents by Inventor Graciela Beatriz Blanchet-Fincher

Graciela Beatriz Blanchet-Fincher 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: 5840463
    Abstract: Photosensitive donor elements, assemblages, and associated processes are described for use in a laser-induced thermal transfer process, said elements comprising in the order listed a support; a photohardenable layer comprising a binder, at least one photohardenable component, and an initiator; optionally a barrier layer; optionally a coversheet; at least one ejection layer comprising a first polymer having a decomposition temperature T.sub.1 ; at least one top layer having an outer surface and comprising (i) a second polymer having a decomposition temperature T.sub.2 and (ii) an imageable component. For photomask fabrication applications, the imageable component is preferably black. Assemblages made with these donor elements are useful for fabrication of photomasks on various photohardenable materials, including flexographic printing plates and photoresists.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: November 24, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Graciela Beatriz Blanchet-Fincher
  • Patent number: 5766819
    Abstract: Donor elements, assemblages, and associated processes are described for use in a laser-induced thermal transfer process, said elements comprising in the order listed (a) at least one flexible ejection layer comprising a first polymer having a decomposition temperature T.sub.1 and characteristic glass transition temperatures of T.sub.g.sup.0 and T.sub.g.sup.1 for unplasticized and plasticized polymer samples, respectively, wherein the tensile modulus of the flexible ejection layer(s) structure is less than or equal to 2.5 Gigapascals; (b) at least one heating layer; (c) at least one transfer layer comprising (i) a second polymer having a decomposition temperature T.sub.2, wherein T.sub.2 .gtoreq.(T.sub.1 +100.degree. C.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: June 16, 1998
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Graciela Beatriz Blanchet-Fincher