Patents by Inventor Paulose Thottathil

Paulose Thottathil 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: 5342659
    Abstract: The invention relates to the chemical bonding of a polymer or polymers onto a non-metallic substrate such as cellophane by contacting the substrate with a grafting solution that contains monomers, prepolymers, catalysts and possibly other ingredients, to obtain graft polymerization onto the substrate with intimate bonding of the polymer onto the substrate surface, and curing the polymer on the substrate by microwave, laser or ultrasonic energy. The invention provides a method where the bonding of the polymer is effected solely by physical rather than chemical means by eliminating the use of silver nitrate in the pretreatment step and using microwave, laser or ultrasonic energy to polymerize the monomers and binding the resulting polymer to the substrate, with the resulting grafted polymer having the same characteristics as if the bonding was effected chemically with silver ions or colloidal silver.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: August 30, 1994
    Assignee: Polymer Research Corp. of America
    Inventors: Carl Horowitz, Mohan Sanduja, Paulose Thottathil
  • Patent number: 5232748
    Abstract: The invention relates to the chemical bonding of a polymer or polymers onto a non-metallic substrate such as cellophane by contacting the substrate with a silver nitrate solution followed by treatment with an alkali hydroxide such as sodium hydroxide or potassium hydroxide, whereby particles of silver or silver oxide are uniformly distributed in situ throughout the surface of the substrate, contacting the thus treated substrate with a grafting solution that contains monomers, prepolymers, catalysts and possibly other ingredients, to obtain graft polymerization onto the substrate with intimate bonding of the polymer onto the substrate surface, and curing the polymer on the substrate by microwave or laser energy.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 3, 1993
    Assignee: Polymer Research Corp. of America
    Inventors: Carl Horowitz, Paulose Thottathil, Mohan Sanduja