Patents by Inventor Zbigniew Witko

Zbigniew Witko 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: 8197724
    Abstract: Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member and lens product rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: June 12, 2012
    Assignee: Coopervision International Holding Company, LP
    Inventor: Zbigniew Witko
  • Publication number: 20100264556
    Abstract: Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member and lens product rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.
    Type: Application
    Filed: July 1, 2010
    Publication date: October 21, 2010
    Inventor: Zbigniew Witko
  • Patent number: 7811483
    Abstract: Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member, and lens product, rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: October 12, 2010
    Assignee: CooperVision International Holding Company, LP
    Inventor: Zbigniew Witko
  • Publication number: 20070278705
    Abstract: Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member, and lens product, rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 6, 2007
    Inventor: Zbigniew Witko
  • Patent number: 5843691
    Abstract: A multilayer reagent test strip measures the concentration of analyte in a liquid sample that is applied to it. The sample is guided to a number of assay areas arrayed along the strip, where the analyte can react with a reagent to cause a color change. Each assay area also includes an inhibitor for the color-change reaction. The inhibitor concentration increases in successive assay areas; thus, the number of areas that change color is a measure of the analyte concentration. The test strip is particularly adapted for measuring glucose in a whole blood sample. In a preferred embodiment, the sample is guided to the assay areas along a path formed by crushing selected areas of a membrane, and the assay areas are uncrushed areas of the membrane.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: December 1, 1998
    Assignee: Lifescan, Inc.
    Inventors: Joel Douglas, Ernest Kiser, Michael F. Tomasco, Remedios Dato, Edward G. Rice, Deborah P. Tuohy, Mark Maxson, Zbigniew Witko, Scott Segelke