Patents by Inventor Demetrius Litwin

Demetrius Litwin 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).

  • Publication number: 20040034357
    Abstract: Implantable devices that deliver a drug to a target location are disclosed. In general, the devices include a portion that engages tissue near the target location and a section with an internal cavity that houses the drug. The drug can be incorporated into a controlled release agent, such as drug-polymer microspheres, which steadily or intermittently release the drug. Alternatively, instead of defining an internal cavity, the section can be formed from a material that includes the controlled release agent. The devices can be used, e.g., to deliver down-regulatory cytokines to a site of inflammation.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 19, 2004
    Applicants: UNIVERSITY OF MASSACHUSETTS, a Massachusetts corporation, SMITH & NEPHEW, INC., a Delaware corporation
    Inventors: Richard M. Beane, Carol L. Miller-Graziano, Steve Ek, George Sikora, Allison Niemann, Demetrius Litwin
  • Publication number: 20020022762
    Abstract: A lens warming and cleaning device for use with an optical surgical instrument is disclosed. The device includes a heat-conducting tube sized and shaped to receive the lens portion of the instrument, a heating element thermally coupled to an exterior of the tube, and a cleaning member disposed within the tube. The cleaning member is disposed such that when the lens portion of the instrument is inserted into the tube, the lens portion contacts the cleaning member.
    Type: Application
    Filed: February 16, 2001
    Publication date: February 21, 2002
    Inventors: Richard Beane, Demetrius Litwin, Steven Ek, Allison Niemann, Melinda Taylor