Patents Assigned to Diatech, Inc.
  • Patent number: 5932189
    Abstract: This invention relates to therapeutic reagents and peptides, including radiotherapeutic reagents and peptides, and radiodiagnostic reagents and peptides. Specifically, the invention relates to cyclic peptide derivatives and analogs of somatostatin, and embodiments of such peptides radiolabeled with a radioisotope, as well as methods for using such peptides for radiodiagnostic and radiotherapeutic purposes.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: August 3, 1999
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, William McBride, John Lister-James
  • Patent number: 5788960
    Abstract: The invention relates to radiolabeled imaging of a mammalian body. The invention in particular provides for reagents labeled with technetium-99 m for such imaging. The invention provides peptides which bind technetium-99 m and which can be targeted to specific sites within a mammalian body.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 4, 1998
    Assignee: Diatech, Inc.
    Inventor: Richard T. Dean
  • Patent number: 5620675
    Abstract: This invention relates to therapeutic reagents and peptides, radiodiagnostic reagents and peptides, and methods for producing label radiodiagnostic agents. Specifically, the invention relates to linear peptide derivatives and analogs of somatostatin, and embodiments of such peptides radiolabeled with a radioisotope, as well as methods and kits for making, radiolabeling and using such peptides for radiodiagnostic and radiotherapeutic purposes. The invention specifically relates to linear peptide derivatives and analogues of somatostatin radiolabeled with technetium-99m and uses thereof as scintigraphic imaging agents. The invention so specifically relates to liner peptide derivatives and analogues of somatostatin radiolabeled with cytotoxic radioisotopes such as rhenium-186 (.sup.186 Re) and rhenium-188 (.sup.188 Re) for use as radiotherapeutic agents. Methods and kits for making, radiolabeling and using such peptides diagnostically and therapeutically in a mammalian body are also provide.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: April 15, 1997
    Assignee: Diatech, Inc.
    Inventors: William McBride, Richard T. Dean
  • Patent number: 5561220
    Abstract: This invention relates to compositions that are radiolabeled scintigraphic imaging agents, comprising a polybasic compound covalently linked to a radiolabel binding moiety and the composition further comprising a polysulfated glycan. The invention also provides methods for producing and using such compositions. Specifically, the invention relates to compositions comprised of technetium-99m (Tc-99m) labeled scintigraphic imaging agents comprising a polybasic compound having at least 5 chemical functionalities that are basic at physiological pH and a radiolabel-binding moiety, the composition further comprising a polysulfated glycan, the composition being capable of specifically binding to inflammatory sites in vivo. Methods and kits for making such compositions, and methods for using such compositions to image sites of infection and inflammation in a mammalian body, are also provided.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: October 1, 1996
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, Brian R. Moyer
  • Patent number: 5552525
    Abstract: This invention relates to reagents, radiolabeled reagents and methods for producing such reagents and radiolabeled reagents. Specifically, the invention relates to technetium-99m (Tc-99m) labeled peptides that specifically bind to inflammatory sites in vivo, methods and kits for making such peptides, and methods for using such peptides to image sites of infection and inflammation in a mammalian body.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: September 3, 1996
    Assignee: Diatech Inc.
    Inventor: Richard T. Dean
  • Patent number: 5508020
    Abstract: This invention relates to radiolabeled peptides and methods for producing such peptides. Specifically, the invention relates to peptides, methods and kits for making such peptides, and methods for using such peptides to image sites in a mammalian body labeled with technetium-99m (Tc-99m) via Tc-99m binding moieties. In particular, the peptide reagents of the invention are covalently linked to a polyvalent linker moiety, so that the polyvalent linker moiety is covalently linked to a multiplicity of the specific-binding peptides, and the Tc-99m binding moieties are covalently linked to a plurality of the specific-binding peptides, the polyvalent linker moiety, or to both the specific-binding peptides and the polyvalent linker moiety.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: April 16, 1996
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, John Lister-James
  • Patent number: 5443815
    Abstract: The invention relates to radiolabeled imaging of a mammalian body. The invention in particular provides for reagents labeled with technetium-99m for such imaging. The invention provides peptides which bind Tc-99m and which can be targeted to specific sites within a mammalian body.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: August 22, 1995
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, William McBride, Scott Buttram
  • Patent number: 5405597
    Abstract: The invention relates to radiolabeled imaging of a mammalian body. The invention in particular provides for reagents labeled with technetium-99m for such imaging. The invention specifically provides somatostatin, somatostatin derivatives, somatostatin analogues or peptides that bind to the somatostatin receptor and contain at least 2 cysteine residues that form a disulfide or wherein the disulfide is reduced to the sulfhydryl form that are labeled with technetium-99m and that can be targeted to specific sites within a mammalian body for imaging.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: April 11, 1995
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, John Lister-James, Scott Buttram
  • Patent number: 5225180
    Abstract: The invention relates to radiolabeled imaging of a mammalian body. The invention in particular provides for reagents labeled with technetium-99m for such imaging. The invention specifically provides somatostatin, somatostatin derivatives, somatostatin analogues or peptides that bind to the somatostatin receptor and contain at least 2 cysteine residues that form a disulfide or wherein the disulfide is reduced to the sulfhydryl form that are directly labeled with technetium-99m and that can be targeted to specific sites within a mammalian body for imaging.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: July 6, 1993
    Assignee: Diatech, Inc.
    Inventors: Richard T. Dean, John Lister-James, Scott Buttram