Patents by Inventor Jan Rijn Zeevaart
Jan Rijn Zeevaart 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: 10874753Abstract: This invention relates new radiopharmaceutical conjugates for use in improved methods of diagnosis and treatment of cancer. The radiopharmaceutical conjugate comprises, in sequence: a metabolite that targets tumour cells, bound to a chelating agent capable of containing a radionuclide, bound to a linker capable of binding with an EPR agent in vitro or in vivo; or a chelating agent capable of containing a radionuclide, bound to a metabolite that targets tumour cells, bound to a linker capable of binding with an EPR agent in vitro or in vivo. The radiopharmaceutical conjugates of the present invention provide active and passive targeted radio nuclide delivery systems that can help to improve the biodistribution and pharmacological toxicity of the radiopharmaceuticals used for the diagnosis and therapy of cancer.Type: GrantFiled: September 25, 2015Date of Patent: December 29, 2020Assignees: The South African Nuclear Energy Corporation Limited, University of Cape TownInventors: Cathryn Helena Stanford Driver, Jan Rijn Zeevaart, Mohamed Iqbal Parker, Roger Hunter
-
Publication number: 20200312476Abstract: A method of obtaining, from a target compound, a radioisotope of a target element comprised in the target compound includes irradiating the target compound with high energy photon irradiation (gamma irradiation). Thereby the target element radioisotope is formed. The method is performed such that the target element radioisotope is of different oxidation state than the target element, and is comprised in a target element radioisotope compound that is separable from the target compound by a physical and/or chemical separation method.Type: ApplicationFiled: June 29, 2018Publication date: October 1, 2020Applicant: The South African Nuclear Energy Corporation SOC LimitedInventor: Jan Rijn Zeevaart
-
Patent number: 10363324Abstract: This invention relates to a pharmaceutical composition for parenteral or oral administration containing a radioactive compound which can be used diagnostically or therapeutically. The composition comprises a micro-emulsion constituted by a dispersion of vesicles or microsponges of a fatty acid based component in an aqueous or other pharmacologically acceptable carrier in which nitrous oxide is dissolved, the fatty acid based component comprising at least one long chain fatty acid based substance selected from the group consisting of free fatty acids and derivatives of free fatty acids, and the radioactive compound.Type: GrantFiled: November 4, 2014Date of Patent: July 30, 2019Assignees: The South African Nuclear Energy Corporation Limited, North-West UniversityInventors: Anne Frederica Grobler, Jan Rijn Zeevaart
-
Publication number: 20170296684Abstract: This invention relates new radiopharmaceutical conjugates for use in improved methods of diagnosis and treatment of cancer. The radiopharmaceutical conjugate comprises, in sequence: a metabolite that targets tumour cells, bound to a chelating agent capable of containing a radionuclide, bound to a linker capable of binding with an EPR agent in vitro or in vivo; or a chelating agent capable of containing a radionuclide, bound to a metabolite that targets tumour cells, bound to a linker capable of binding with an EPR agent in vitro or in vivo. The radiopharmaceutical conjugates of the present invention provide active and passive targeted radio nuclide delivery systems that can help to improve the biodistribution and pharmacological toxicity of the radiopharmaceuticals used for the diagnosis and therapy of cancer.Type: ApplicationFiled: September 25, 2015Publication date: October 19, 2017Inventors: Cathryn Helena Stanford DRIVER, Jan Rijn ZEEVAART, Mohamed Iqbal PARKER, Roger HUNTER
-
Publication number: 20160346412Abstract: The present invention relates to a stabilized kit for the preparation of a radiopharmaceutical. In particular, the present invention relates to the use of a non-aqueous solvent for the stabilisation of the ligand component of the kit.Type: ApplicationFiled: February 6, 2015Publication date: December 1, 2016Inventors: Jan Rijn Zeevaart, Zoltan Szucs, Judith Wagener
-
Publication number: 20160271279Abstract: This invention relates to a pharmaceutical composition for parenteral or oral administration containing a radioactive compound which can be used diagnostically or therapeutically. The composition comprises a micro-emulsion constituted by a dispersion of vesicles or microsponges of a fatty acid based component in an aqueous or other pharmacologically acceptable carrier in which nitrous oxide is dissolved, the fatty acid based component comprising at least one long chain fatty acid based substance selected from the group consisting of free fatty acids and derivatives of free fatty acids, and the radioactive compound.Type: ApplicationFiled: November 4, 2014Publication date: September 22, 2016Inventors: Anne Frederica Grobler, Jan Rijn Zeevaart
-
Patent number: 9047998Abstract: The invention relates to a method of producing radionuclides. According to the method, a target medium comprising at least a target nuclide material is irradiated in an irradiation zone with neutron irradiation. Radionuclides form in the target nuclide material as a result of the irradiation, and at least some of the formed radionuclides are ejected from the target nuclide material. The ejected radionuclides are then captured and collected in a carbon-based recoil capture material which does not have an empty cage structure at crystallographic level.Type: GrantFiled: March 10, 2011Date of Patent: June 2, 2015Assignee: The South African Nuclear Energy Corporation LimitedInventors: David Randall Jansen, Geert Cornelis Krijger, Zvonimir Ivica Kolar, Jan Rijn Zeevaart
-
Publication number: 20140199240Abstract: The invention relates to a method for preparing a bisphosphonate covalently bonded to a nanostructure. This invention also relates to a bisphosphonate having incorporated therein a radioisotope selected from 32p or 33P, preferably 33p, wherein the bisphosphonate is covalently bonded to a nanostructure directly or by way of a linker, and to the use thereof in a method of treating calcific tumours in a patient.Type: ApplicationFiled: July 2, 2012Publication date: July 17, 2014Applicants: UNIVERSITY OF JOHANNESBURG, THE SOUTH AFRICAN NUCLEAR ENERGY CORPORATION LIMITEDInventors: Jan Rijn Zeevaart, Xavier Yangkou Mbianda, Zoltan Szucs
-
Publication number: 20130170593Abstract: The invention relates to a method of producing radionuclides. According to the method, a target medium comprising at least a target nuclide material is irradiated in an irradiation zone with neutron irradiation. Radionuclides form in the target nuclide material as a result of the irradiation, and at least some of the formed radionuclides are ejected from the target nuclide material. The ejected radionuclides are then captured and collected in a carbon-based recoil capture material which does not have an empty cage structure at crystallographic level.Type: ApplicationFiled: March 10, 2011Publication date: July 4, 2013Applicant: The South African Nuclear Energy Corporation Ltd.Inventors: David Randall Jansen, Geert Cornelis Krijger, Zvonimir Ivica Kolar, Jan Rijn Zeevaart