Patents by Inventor Dan Kalas

Dan Kalas 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: 6787786
    Abstract: The present invention relates to radiation sources and a method for producing radiation sources. Embodiments of the present invention are directed to radiation sources that can be used to calibrate nuclear imaging equipment, such as flood sources. According to embodiments of the invention, the radiation source includes a outer housing that contains a substrate upon which a radioactive pattern is deposited. The radioactive deposit may be placed on the surface of the substrate in the form of a deposited solution and may be fixed to the surface of the substrate by, for example, a binding agent and/or a sealing layer. The deposited solution may also include a colorant to visually indicate the activity distribution of the radioactive deposit.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: September 7, 2004
    Assignee: North American Scientific, Inc.
    Inventors: Dan Kalas, L. Michael Cutrer, Jack Webb
  • Patent number: 6755775
    Abstract: The present invention relates to an apparatus and method for loading radioactive brachytherapy seeds into a seed cartridge for use with an applicator. Embodiments of the apparatus according to the present invention may include a number of contact points of a size and shape designed to conform to the main body of a brachytherapy seed. The apparatus may hold the seeds until the seeds are placed within a channel of the seed cartridge, at which point the seeds may be released from the contact sites by the application of a force to the seeds or by some other mechanism. The apparatus may be made from a flexible material so that the seeds may be released by the application of a tension force. According to embodiments of the method of loading the seed cartridge, seeds in the loader may be positioned in relation to the body of the loading apparatus and the ends of the seeds may be aligned with the channel of the seed cartridge.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: June 29, 2004
    Assignee: North American Scientific, Inc.
    Inventors: Dan Kalas, David Bossi, L. Michael Cutrer
  • Publication number: 20040119030
    Abstract: The present invention relates to radiation sources and a method for producing radiation sources. Embodiments of the present invention are directed to radiation sources that can be used to calibrate nuclear imaging equipment, such as flood sources. According to embodiments of the invention, the radiation source includes a outer housing that contains a substrate upon which a radioactive pattern is deposited. The radioactive deposit may be placed on the surface of the substrate in the form of a deposited solution and may be fixed to the surface of the substrate by, for example, a binding agent and/or a sealing layer. The deposited solution may also include a colorant to visually indicate the activity distribution of the radioactive deposit.
    Type: Application
    Filed: December 8, 2003
    Publication date: June 24, 2004
    Applicant: North American Scientific, Inc.
    Inventors: Dan Kalas, L. Michael Cutrer, Jack Webb
  • Publication number: 20030045769
    Abstract: The present invention relates to an apparatus and method for loading radioactive brachytherapy seeds into a seed cartridge for use with an applicator. Embodiments of the apparatus according to the present invention may include a number of contact points of a size and shape designed to conform to the main body of a brachytherapy seed. The apparatus may hold the seeds until the seeds are placed within a channel of the seed cartridge, at which point the seeds may be released from the contact sites by the application of a force to the seeds or by some other mechanism. The apparatus may be made from a flexible material so that the seeds may be released by the application of a tension force. According to embodiments of the method of loading the seed cartridge, seeds in the loader may be positioned in relation to the body of the loading apparatus and the ends of the seeds may be aligned with the channel of the seed cartridge.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 6, 2003
    Applicant: NORTH AMERICAN SCIENTIFIC, INC.
    Inventors: Dan Kalas, David Bossi, L. Michael Cutrer
  • Publication number: 20020185613
    Abstract: The present invention relates to radiation sources and a method for producing radiation sources. Embodiments of the present invention are directed to radiation sources that can be used to calibrate nuclear imaging equipment, such as flood sources. According to embodiments of the invention, the radiation source includes a outer housing that contains a substrate upon which a radioactive pattern is deposited. The radioactive deposit may be placed on the surface of the substrate in the form of a deposited solution and may be fixed to the surface of the substrate by, for example, a binding agent and/or a sealing layer. The deposited solution may also include a colorant to visually indicate the activity distribution of the radioactive deposit.
    Type: Application
    Filed: June 12, 2001
    Publication date: December 12, 2002
    Applicant: NORTH AMERICAN SCIENTIFIC, INC.
    Inventors: Dan Kalas, L. Michael Cutrer, Jack Webb