Patents by Inventor Laura J. Hiscock

Laura J. Hiscock 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).

  • Porous polymer beads and process
    Patent number: 5314923
    Abstract: Isotropic porous polymer beads having a high surface porosity and large pore diameters from about 0.002 to about 5 microns are produced from solutions of a polymer or a copolymer by a thermally-induced phase separation process. The use of mixed solvent-non-solvent combinations as solvents for the polymers, produces high pore content, substantially spherical beads having a morphology ideally suited to the chromatography of large molecules, such as proteins, and for enzyme-binding.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: May 24, 1994
    Assignee: Cytec Technology Corp.
    Inventors: Michael T. Cooke, Laura J. Hiscock
  • Porous polyacrylonitrile beads and process for their production
    Patent number: 5047437
    Abstract: Isotropic porous polymer beads having a high surface porosity and large pore diameters from about 0.002 to about 5 microns are produced from solutions of an acrylonitrile polymer or a copolymer by a thermally-induced phase separation process. The use of mixed solvent-non-solvent combinations as solvents for the polymers, produces high pore content, substantially spherical beads having a morphology ideally suited to the chromatography of large molecules, such as proteins, and for enzyme-binding.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: September 10, 1991
    Assignee: American Cyanamid
    Inventors: Michael T. Cooke, Laura J. Hiscock
  • Process for the preparation of porous polymer beads
    Patent number: 4940734
    Abstract: Isotropic porous polymer beads having controllable surface porosity and large pore diameters from about 0.002 to about 5 microns are produced from solutions of an acrylonitrile polymer or a copolymer by a thermally-induced phase separation process including intensively shearing the polymer solution into small droplets. The use of mixed solvent non-solvent combinations as solvents for the polymers, and preferably reducing the polymer content in solution to below 10 percent produces high pore content, substantially spherical beads having a morphology ideally suited to the chromatography of large molecules, such as proteins, and for enzyme-binding.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: July 10, 1990
    Assignee: American Cyanamid
    Inventors: David A. Ley, Laura J. Hiscock, Michael T. Cooke
  • Electron beam and x-ray resists
    Patent number: 4868241
    Abstract: Polymers are disclosed comprising a poly(vinyl alcohol) backbone with the following groups or combination of groups bound to the backbone:(A) (substituted alkyl)benzoyl groups; or(B) (substituted alkyl)benzoyl groups, and (vinyl)benzoyl groups; or(C) (substituted alkyl)benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro) benzoyl groups;(D) (substituted alkyl)benzoyl groups, (vinyl) benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro)benzoyl groups;(E) (vinyl)benzoyl groups, and (halo)benzoyl groups or (2-carboxy-3,4,5,6-tetrachloro) benzoyl groups; or(F) (halo)benzoyl groups.Each of these polymers can optionally contain, bound to the poly(vinyl alcohol) backbone, (trialkylsily) benzoyl groups.The benzoyl groups are randomly bound to the poly(vinyl alcohol) by ester linkages. Residual pendant hydroxy groups remain after the attachment of the benzoyl groups.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: September 19, 1989
    Assignee: American Cyanamid Company
    Inventors: Laura J. Hiscock, Bruce H. Baretz, Richard L. Webb