Patents by Inventor David P. Czajkowski

David P. Czajkowski 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).

  • NONIMMUNOSUPPRESSIVE CYCLOSPORINE ANALOGUE MOLECULES
    Publication number: 20130190223
    Abstract: The compounds of the present invention are non-immunosupressive cyclosporine analogue molecules that are able to bind cyclophilin. Said compounds include a modified side chain of amino acid I of cyclosporin A, consisting of an oxyalkyl having substituents R?, R1 and R2, where R? is H or Acetyl; R1 is a saturated or unsaturated straight chain or branched aliphatic carbon chain; and R2 may be a hydrogen; a unsubstituted, N substituted or NN disubstituted amide; a N substituted or unsubstituted acyl protected amine; a carboxylic acid; a N substituted or unsubstituted amine; a nitrile; a ester; a ketone; a hydroxy, dihydroxy, trihydroxy or polyhydroxy alkyl; or a substituted or unsubstituted aryl.
    Type: Application
    Filed: July 3, 2009
    Publication date: July 25, 2013
    Applicant: ISOTECHNIKA PHARMA INC.
    Inventors: Alexander Hegmans, Bruce W. Fenske, David P. Czajkowski, Darren R. Ure, Shin Sugiyama, Dan J. Trepanier, David H. McGlade, Mark D. Abel
  • 2-spiro(2'-spirocycloalkyl)cyclopropyl cephalosporin sulfones as antiinflammatory and antigenerative agents
    Patent number: 5439904
    Abstract: 2-spiro (2'-spirocycloalkyl) cyclopropyl cephalosporin sulfone compounds, methods of treating patients for elastase inhibition, and processes for preparing such compounds.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: August 8, 1995
    Assignee: Synphar Laboratories, Inc.
    Inventors: Samarendra N. Maiti, Charles Y. Fiakpui, Andhe V. N. Reddy, David P. Czajkowski, Ronald G. Micetich