Patents by Inventor Herman Burwasser

Herman Burwasser 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: 4528242
    Abstract: An improved ink jet recording transparency is described herein which is capable of absorbing colored, aqueous-miscible inks to provide very high density images which are permanent and smear resistant. This transparency article includes a transparent resinous support and an improved coating which is clear and comprises a mixture of a carboxylated polymer or copolymer, having a molecular weight of about 50,000 to 1 million, and a polyalkylene glycol having an average molecular weight of about 5,000 to 25,000, preferably 15,000 to 25,000, the glycol being present in an amount of about 5% to 70%, preferably 10% to 25%, by weight of said polymer.
    Type: Grant
    Filed: March 20, 1984
    Date of Patent: July 9, 1985
    Assignee: Transcopy, Inc.
    Inventor: Herman Burwasser
  • Patent number: 4474850
    Abstract: A novel and useful ink jet recording transparency is described herein which is capable of wetting and absorbing colored, water soluble inks to provide permanent, high density images which are smear resistant. The transparency article of the invention includes a transparent resinous support which has a defined coating thereon. The coating is clear and consists essentially of a carboxylated, high molecular weight polymer or copolymer, or salts thereof, and, optionally, a pigment which is a particulate material. In the preferred embodiment of the invention, wherein high density images may be formed on a coated transparency from multiple jets of different colored inks which absorb such inks rapidly, the coating includes a carboxylated acrylic polymer which has been reacted with an organic amine.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: October 2, 1984
    Assignee: Transcopy, Inc.
    Inventor: Herman Burwasser
  • Patent number: 4404574
    Abstract: A latent image is electrographically generated onto a dielectric record member from an energized electrode in close proximity with the dielectric layer of the member, and which image, if desired, may be readily developed and fixed. The system is particularly characterized in that the dielectric record member is a clear transparent, flexible film, which is made up of a resin film base, a conductive layer on the base, and a dielectric layer thereon. The dielectric layer has a thickness of about 1.4-10 micrometers. In the preferred embodiment of the invention, the dielectrtic layer includes an anti-blocking material which enables the film member to be unrolled from a roll holder and transported at a controlled rate uniformly and rapidly across an energized electrode so that a sufficient amount of charge can be transferred from the electrode to the film to provide a high contrast image.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: September 13, 1983
    Assignee: R.Q.O. Holding Company, Inc.
    Inventors: Herman Burwasser, John R. Wyhof
  • Patent number: 4287286
    Abstract: Electroreprographic films comprising a support member which are capable of acquiring an electrostatic charge which on passing through a toner bath pick up unwanted toner outside the image area which is not fixed during development. The unwanted toner pick up is minimized by applying a layer of anti-static material to the otherwise uncoated back of the support.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: September 1, 1981
    Assignee: GAF Corporation
    Inventor: Herman Burwasser
  • Patent number: 4262053
    Abstract: Dielectric films comprising a support member which is capable of acquiring an electrostatic charge on passing through toner pick up toner randomly which is not fixed during development. The unwanted toner pick up is minimized by applying a coat of anti-static material and/or a toner fixing resin to the uncoated back of the support. The present invention improves blocking characteristics of dielectric film by modifying the surface by means of adding particulate materials to the final coat on one or both surfaces of the support.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: April 14, 1981
    Assignee: GAF Corporation
    Inventor: Herman Burwasser
  • Patent number: 4241134
    Abstract: Electrostatically imageable drafting film which comprises a plastic, impermeable, non-conductive, actinically transparent film support coated first with a conductive layer which is then overcoated by a dielectric composition comprising a suitable toothing pigment and a binder resin.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: December 23, 1980
    Assignee: GAF Corporation
    Inventor: Herman Burwasser
  • Patent number: 4112172
    Abstract: An improved dielectric imaging member comprising a transparent dielectric substrate having a thickness of between about 75 - 175 micrometers, a conductive layer on said substrate and a dielectric material having a thickness of less than about 15 micrometers on said conductive layer. An imaging process is also provided comprising generating an electrostatic latent image on said dielectric imaging member and developing said image by contact with a developer material.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: September 5, 1978
    Assignee: GAF Corporation
    Inventors: Herman Burwasser, John R. Wyhof