Patents by Inventor Lidia MATEI

Lidia MATEI 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: 11062816
    Abstract: Apparatuses and methods for production of molybdenum targets, and the formed molybdenum targets, used to produce Tc-99m are described. The target includes a copper support plate having a front face and a back face. The copper support plate desirably has dimensions of thickness of about 2.8 mm, a length of about 65 mm and a width of about 30 mm; and the copper support plate desirably has either a circular or an elliptical cavity centrally formed therein by pressing molybdenum powder into the front face with a depth of about 200-400 microns. Also, the copper support plate includes cooling channels dispensed at the back face; wherein the copper support plate is water cooled by a flow of water during irradiation by a proton beam. Molybdenum powder is embedded and compressed onto the cavity of the copper support plate thereby creating a thin layer of molybdenum onto the copper support plate.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: July 13, 2021
    Inventors: Richard Ray Johnson, William Z. Gelbart, Brian Abeysekera, Lidia Matei, Glenn McRae
  • Publication number: 20210158987
    Abstract: A process for the separation of 99mTc from molybdenum targets is described. The method for separation of 99mTc isotope from molybdenum targets includes: i) providing an initial multicomponent mixture of elements, the mixture containing 99mTc; ii) dissolving the multicomponent mixture of elements with an oxidizing agent to oxidize the mixture of elements; iii) heating the mixture of elements at a temperature sufficiently high enough to sublimate a vaporized compound containing 99mTc; iv) condensing the vaporized compound containing 99mTc to form a reaction product; v) adding a base to the condensed reaction product to dissolve the 99mTc containing reaction product to form sodium pertechnetate (Na99mTcO4); and vii) purifying the crude solution of sodium pertechnetate Na99mTcO4 using column chromatography to provide the 99mTc isotope as a radiochemical compound.
    Type: Application
    Filed: February 5, 2021
    Publication date: May 27, 2021
    Inventors: Richard Ray Johnson, William Z. Gelbart, Brian Abeysekera, Lidia Matei, Glenn Mcrae
  • Patent number: 10943708
    Abstract: A process for the separation of 99mTc from molybdenum targets is described. The method for separation of 99mTc isotope from molybdenum targets includes: i) providing an initial multicomponent mixture of elements, the mixture containing 99mTc; ii) dissolving the multicomponent mixture of elements with an oxidizing agent to oxidize the mixture of elements; iii) heating the mixture of elements at a temperature sufficiently high enough to sublimate a vaporized compound containing 99mTc; iv) condensing the vaporized compound containing 99mTc to form a reaction product; v) adding a base to the condensed reaction product to dissolve the 99mTc containing reaction product to form sodium pertechnetate (Na99mTcO4); and vii) purifying the crude solution of sodium pertechnetate Na99mTc04 using column chromatography to provide the 99mTc isotope as a radiochemical compound.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 9, 2021
    Inventors: Richard Ray Johnson, William Z. Gelbart, Brian Abeysekera, Lidia Matei, Glenn McRae
  • Publication number: 20170229202
    Abstract: A process for the separation of 99mTc from molybdenum targets is described. The method for separation of 99mTc isotope from molybdenum targets includes: i) providing an initial multicomponent mixture of elements, the mixture containing 99mTc; ii) dissolving the multicomponent mixture of elements with an oxidizing agent to oxidize the mixture of elements; iii) heating the mixture of elements at a temperature sufficiently high enough to sublimate a vaporized compound containing 99mTc; iv) condensing the vaporized compound containing 99mTc to form a reaction product; v) adding a base to the condensed reaction product to dissolve the 99mTc containing reaction product to form sodium pertechnetate (Na99mTcO4); and vii) purifying the crude solution of sodium pertechnetate Na99mTc04 using column chromatography to provide the 99mTc isotope as a radiochemical compound.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 10, 2017
    Inventors: Richard Ray JOHNSON, William Z. GELBART, Brian ABEYSEKERA, Lidia MATEI, Glenn MCRAE
  • Publication number: 20170231080
    Abstract: Apparatuses and methods for production of molybdenum targets, and the formed molybdenum targets, used to produce Tc-99m are described. The target includes a copper support plate having a front face and a back face. The copper support plate desirably has dimensions of thickness of about 2.8 mm, a length of about 65 mm and a width of about 30 mm; and the copper support plate desirably has either a circular or an elliptical cavity centrally formed therein by pressing molybdenum powder into the front face with a depth of about 200-400 microns. Also, the copper support plate includes cooling channels dispensed at the back face; wherein the copper support plate is water cooled by a flow of water during irradiation by a proton beam. Molybdenum powder is embedded and compressed onto the cavity of the copper support plate thereby creating a thin layer of molybdenum onto the copper support plate.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 10, 2017
    Applicant: Best Theratronics Ltd
    Inventors: Richard Ray JOHNSON, William Z. GELBART, Brian ABEYSEKERA, Lidia MATEI, Glenn MCRAE