Patents by Inventor Douglas M. Willis

Douglas M. Willis 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).

  • Benzothiazine dyes for imaging elements
    Patent number: 6881840
    Abstract: This relates to a dye represented by Formulae II and IIA below: wherein; R1 represents a hydrogen, an aryl group containing 6 to 14 carbon atoms, or an alkyl group containing 1 to 12 carbon atoms, R2 and R3 together form an aromatic, carbocyclic or heterocyclic ring system containing 6 to 14 atoms; X represents a sulfoxide (S?O), sulfone (SO2), or dicyanovinyl (C(CN)2) group; Y represents a sulfoxide (S?O), sulfone (SO2), carbonyl (C?O) or dicyanovinyl (C(CN)2) group; L1, L2, and L3 represent methine groups, wherein the methine groups may combine to form a 5- or 6-membered ring when m is equal to or >1; m is 0, 1, 2, or 3; W is an aryl group; and D is a moiety in conjugation with the X and Y groups.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: April 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, Douglas M. Willis, John DiCillo
  • Novel benzothiazine dyes for imaging elements
    Publication number: 20030192138
    Abstract: This relates to a dye represented by Formulae II and IIA below: 1
    Type: Application
    Filed: February 8, 2002
    Publication date: October 16, 2003
    Applicant: Eastman Kodak Company
    Inventors: Margaret J. Helber, Douglas M. Willis, John DiCillo
  • Imaging materials containing novel benzothiazine dyes
    Patent number: 6558888
    Abstract: This invention relates to an imaging element comprising a dye represented by Formulae II and IIA below: wherein; R1 represents a hydrogen, an aryl group containing 6 to 14 carbon atoms, or an alkyl group containing 1 to 12 carbon atoms; R2 and R3 together form an aromatic carbocyclic or heterocyclic ring system containing 6 to 14 atoms; X represents a sulfoxide (S═O), sulfone (SO2), carbonyl (C═O) or dicyanovinyl (C(CN)2) group, and Y represents a sulfoxide (S═O), sulfone (SO2), carbonyl (C═O) or dicyanovinyl (C(CN)2) group, with the proviso that X and Y cannot both be carbonyl; L1, L2, and L3 represent methine groups, wherein the methine groups may combine to form a 5- or 6-membered ring when m is equal to or >1; m is 0, 1, 2, or 3; W is an aryl group; and D is a moiety in conjugation with the X and Y groups.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: May 6, 2003
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, Douglas M. Willis, John DiCillo