Patents by Inventor Aleš Ruzicka

Aleš Ruzicka 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).

  • Process for preparation of amides and esters of 2-((2-hydroxypropanoyl)oxy)propanoic acid
    Patent number: 12338197
    Abstract: The present invention describes method of preparation of amides of lactyl lactates of general formula I, where Z denotes to group of RR?—N and R represent alkyl, aryl or H from lactide and the lactide reacts with an aliphatic or aromatic amine with 1 to 100 carbon atoms of general formula RR?NH or with an aliphatic or aromatic ammonium hydrohalide with 1 to 100 carbon atoms of general formula RR?NH·HX, where X is selected from Cl, Br and I in a non-chlorinated organic aliphatic or aromatic solvent or in a melted mixture of lactide under solvent free condition, and when lactide reacts with amine, initiator derived from group of Lewis acids of halides of 4., 12., 13., and 14. group is added.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 24, 2025
    Assignee: Univerzita Pardubice
    Inventors: Aleš Ruzicka, Roman Olejník