Patents Represented by Attorney Renato M. de Luna
  • Patent number: 5486397
    Abstract: A protectively reflected binary image is provided comprising a thermally imaged transparency on which is superposed a thin reflective protective overcoat, the imaged transparency comprising a binary image supported on a transparent substrate. The reflective protective overcoat is interfacially bonded to the thermally imaged transparency preferably such that the binary image is interposed between the transparent substrate and the reflective protective overcoat. A method for transferring a reflective protective overcoat onto an imaged transparency is also provided, whereby an image surface of the imaged transparency is protected and made viewable as a reflected image, the method utilizing a laminar transfer sheet comprising a carrier web and a reflective protective overcoat, the laminar transfer sheet being laminated onto the image surface with the carrier web subsequently removed to thereby release the reflective protective overcoat, the overcoat remaining bonded to the image surface.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: January 23, 1996
    Assignee: Polaroid Corporation
    Inventors: James N. Gordon, Ganghui Teng
  • Patent number: 5455148
    Abstract: A two-phase acidic aqueous composition for use as a neutralization layer is generally comprised of a water soluble aqueous phase and a water insoluble particle phase. The particle phase generally comprises a copolymer having recurring units of an organic acid monomer and an organic ester monomer. The aqueous phase comprises a water soluble polymer having recurring units of at least an organic acid monomer. The organic acid monomers selected for the aqueous phase polymer are capable of interacting with the particle phase polymers such that the particle phase polymers are brought into stabilizing, intimate association with the aqueous phase.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: October 3, 1995
    Assignee: Polaroid Corporation
    Inventors: David W. Avison, Agota F. Fehervari, David A. Johnson, Diana R. Koretsky
  • Patent number: 5427899
    Abstract: A two-phase acidic aqueous composition for use as a neutralization layer is generally comprised of a water soluble aqueous phase and a water insoluble particle phase. The particle phase generally comprises a copolymer having recurring units of an organic acid monomer and an organic ester monomer. The aqueous phase comprises a water soluble polymer having recurring units of at least an organic acid monomer. The organic acid monomers selected for the aqueous phase polymer are capable of interacting with the particle phase polymers such that the particle phase polymers are brought into stabilizing, intimate association with the aqueous phase.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: June 27, 1995
    Assignee: Polaroid Corporation
    Inventors: David W. Avison, Agota F. Fehervari, David A. Johnson, Diana R. Koretsky
  • Patent number: 5393639
    Abstract: A thermally imageable laminar composite comprising a pair of opposed sheets confining therebetween a frangible layer of image-forming substance partitionable to the respective sheets on separation of the sheets after thermal imaging is protected against premature stress-induced delamination by the heat bonding of the opposed sheets to one another through said image-forming substance at the periphery of said composite, said bonding being at a strength substantially greater than that required to separate said sheets in the expansive thermally imageable region confined by said periphery. A method for preparing individual units of an imageable composite, including the steps of establishing a band-like heated zone in a supply web of laminate, corresponding to the boundaries of a unit to be cut therefrom, and cutting a unit from within said band-like zone is described.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: February 28, 1995
    Assignee: Polaroid Corporation
    Inventor: Steven Kourepenis