Patents by Inventor Kurt G. Hofer

Kurt G. Hofer 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: 20020040155
    Abstract: Taxanes containing electron-affinic radiosensitizing functional groups, their pharmaceutical preparations, and methods of making and using this new class of highly potent radiosensitizers of tumor cells.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 4, 2002
    Applicant: Florida State University
    Inventors: Robert A. Holton, Hossain Nadizadeh, Kurt G. Hofer, Li-Xi Yang
  • Patent number: 6255495
    Abstract: A compound comprising and diamine containing from 2-4 electron-affinic radiosensitizing functional groups or a salt thereof is provided. In a preferred embodiment the compound has the formula wherein A comprises a carbon carbon having from about 2-10 carbon in the chain, R1, R2, R3, and R4 are H, or T, T is wherein A′ comprises a carbon chain having from about 1-8 carbon in the chain, is R5 is H, lower alkyl, and halo, and R6 is H, lower alkyl, halo or nitro, provided that at least one of R1 and R2, and at least one of R3 and R4 is T. Intermediates for, pharmaceutical compositions containing, methods for making and methods for using such compounds to radiosensitize and kill hypoxic tumor cells are also provided.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: July 3, 2001
    Assignee: Florida State University
    Inventors: Li-Xi Yang, Kurt G. Hofer
  • Patent number: 6060604
    Abstract: A compound or a salt thereof comprising a polyamine containing at least 2 electron-affinic groups is provided. In a preferred embodiment, the polyamine compound has the structure: wherein:A is a spacer; R.sup.1, R.sup.2, R.sub.3, and R.sub.4 are independently hydrogen, hydrocarbon, heterosubstituted hydrocarbon, heteroaryl, heterosubstituted heteroaryl, or an electron-affinic group containing substituent; and the compound contains at least one tertiary amine functionality having three substituents each of which independently contain at least one electron-affinic group or hydrophilic group.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: May 9, 2000
    Assignee: Florida State University
    Inventors: Li-Xi Yang, Kurt G. Hofer
  • Patent number: 6057453
    Abstract: This invention relates to a method for making radiosensitizing diamines. This method comprises converting a compound having formula (5): ##STR1## to a compound having formula (6): ##STR2## using dimethyl sulfoxide activated by oxalyl chloride, and the treating the compound having formula (6) with a diamine reagent in the presence of an organic acid and a reducing agent.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: May 2, 2000
    Assignee: Florida State University
    Inventors: Li-Xi Yang, Kurt G. Hofer
  • Patent number: 5700825
    Abstract: A compound comprising a diamine containing from 2-4 electron-affinic radiosensitizing functional groups or a salt thereof is provided. In a preferred embodiment the compound has the formula ##STR1## wherein A comprises a carbon chain having from about 2-10 carbons in the chain, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are H, or T, T is ##STR2## wherein A' comprises a carbon chain having from about 1-8 carbons in the chain, R.sup.5 is H, lower alkyl, or halo, and R.sup.6 is H, lower alkyl, halo or nitro, provided that at least one of R.sup.1 and R.sup.2, and at least one of R.sup.3 and R.sup.4 is T. Intermediates for, pharmaceutical compositions containing, methods for making and methods for using such compounds to radiosensitize and kill hypoxic tumor cells are also provided.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: December 23, 1997
    Assignee: Florida State University
    Inventors: Kurt G. Hofer, Li-xi Yang