Patents by Inventor William A. Nucefora

William A. Nucefora 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).

  • Controlled release composite core coated microparticles
    Patent number: 4623588
    Abstract: A process for preparing coated microparticles, which process comprises preparing a solvent solution of an active ingredient to be encapsulated and a film-forming polymer, removing the solvent to provide a dry, composite, uniform admixture of the active ingredient and the polymer material, reducing the composite admixture to a defined smaller particle size distribution, coating the reduced composite core particles in a fluidized bed, with a uniform defined wall thickness of the same or substantially the same film-forming polymer material to provide composite core coated microparticles.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: November 18, 1986
    Assignee: Biotek, Inc.
    Inventors: Elie S. Nuwayser, William A. Nucefora
  • Composite core coated microparticles and process of preparing same
    Patent number: 4568559
    Abstract: A process for preparing coated microparticles, which process comprises preparing a solvent solution of an active ingredient to be encapsulated and a film-forming polymer, removing the solvent to provide a dry, composite, uniform admixture of the active ingredient and the polymer material, reducing the composite admixture to a defined smaller particle size distribution, coating the reduced composite core particles in a fluidized bed, with a uniform defined wall thickness of the same or substantially the same film-forming polymer material to provide composite core coated microparticles.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: February 4, 1986
    Assignee: Biotek, Inc.
    Inventors: Elie S. Nuwayser, William A. Nucefora