Patents by Inventor Patricia B. Williams

Patricia B. Williams 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: 5576013
    Abstract: Lesions supplied by abnormal aggregations of vascular tissue or neovascular tissues are treated with photodynamic therapy by application of photosensitizing agent followed by precisely directed and calibrated laser activation to induce photothrombosis within target vascular tissue. The treatment forms a blood clot within the supply vessels thereby reducing the blood supply to the target lesion. Treated tissues atrophy or recede with low regrowth of vessels. The lower energy levels required significantly reduce damage to the surrounding tissues.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: November 19, 1996
    Assignee: Eastern Virginia Medical School
    Inventors: Patricia B. Williams, John D. Sheppard
  • Patent number: 5547680
    Abstract: A topical gel formulation containing aminocaproic acid prevents secondary hemorrhage following hyphema without the adverse side effects associated with systemically delivered aminocaproic acid. Of ten human patients treated with the formulation, none have experienced a secondary hemorrhage and none have experienced adverse side effects. The topical gel formulation is prepared by a process which ensures sterility, a pH compatible with conditions in the aqueous humor, and optimum consistency. A permeation enhancer such as proparacaine can be incorporated into the gel during formulation and be used to enhance the transport of aminocaproic acid across the corneal epithelium.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: August 20, 1996
    Assignees: Eastern Virginia Medical School, The Center for Innovative Technology
    Inventors: Patricia B. Williams, Earl R. Crouch, Jr.
  • Patent number: 5541226
    Abstract: Persistent epithelial defects are effectively treated by topically applying a gelatinous composition containing either aminocaproic acid or tranexamic acid to the eye. In vivo results demonstrate improved healing of the epithelium and basement membrane complex. The gelatinous composition is prepared by a process that ensures sterility and proper pH conditions throughout the gel.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: July 30, 1996
    Assignee: Center for Innovative Technology
    Inventors: Patricia B. Williams, Earl R. Crouch
  • Patent number: 5505954
    Abstract: A topical gel formulation containing aminocaproic acid prevents secondary hemorrhage following hyphema without the adverse side effects associated with systemically delivered aminocaproic acid. Of ten human patients treated with the formulation, none have experienced a secondary hemorrhage and none have experienced adverse side effects. The topical gel formulation is prepared by a process which ensures sterility, a pH compatible with conditions in the aqueous humor, and optimum consistency. A permeation enhancer such as proparacaine can be incorporated into the gel during formulation and be used to enhance the transport of aminocaproic acid across the corneal epithelium.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: April 9, 1996
    Assignees: The Center for Innovative Technology, Eastern Virginia Medical School
    Inventors: Patricia B. Williams, Earl R. Crouch, Jr.
  • Patent number: 5415863
    Abstract: A topical gel formulation containing aminocaproic acid prevents secondary hemorrhage following hyphema without the adverse side effects associated with systemically delivered aminocaproic acid. Of ten human patients treated with the formulation, none have experienced a secondary hemorrhage and none have experienced adverse side effects. The topical gel formulation is prepared by a process which ensures sterility, a pH compatible with conditions in the aqueous humor, and optimum consistency. A permeation enhancer such as proparacaine can be incorporated into the gel during formulation and be used to enhance the transport of aminocaproic acid across the corneal epithelium.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: May 16, 1995
    Assignees: The Center for Innovative Technology, Eastern Virginia Medical School
    Inventors: Patricia B. Williams, Earl R. Crouch, Jr.