Patents by Inventor Stanislaw Schastak

Stanislaw Schastak 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).

  • Porphyrins and their use as photosensitizer
    Patent number: 6410568
    Abstract: The invention relates to new compounds of the general formula: in which: R1 is C1 to C6 alkyl or aryl, R2 to R5 independently of each other are H, OH, C1 to C6 alkyl, C1 to C6 alkylene or OR6, R6 being C1 to C6 alkyl or aryl, An− is an anion and n is 1 or 2. The compounds can be used as photosensitizers for example in medicine, agriculture and industry.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: June 25, 2002
    Assignee: Astrid Schastak
    Inventors: Stanislaw Schastak, Alexander Shulga, Frieder Berr, Peter Wiedemann