Patents by Inventor Sergej Karel

Sergej Karel 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).

  • Self-supporting, biodegradable film based on hydrophobized hyaluronic acid, method of preparation and use thereof
    Patent number: 10689464
    Abstract: The invention relates to a self-supporting, biodegradable film comprising a C10-C22-acylated derivative of hyaluronic acid according to the general formula (I), where R is H+ or Na+, and where R1 is H or —C(?O)CxHy, where x is an integer within the range from 9 to 21 and y is an integer within the range from 11 to 43 and CxHy is a linear or branched, saturated or unsaturated C9-C21 chain, wherein in at least one repeating unit one or more of R1 is —C(?O)CxHy and where n is within the range from 12 to 4000; a method of preparation thereof and use thereof.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 23, 2020
    Assignee: Contipro a.s.
    Inventors: Marcela Dusankova, Gloria Huerta-Angeles, Kristina Nesporova, Klara Slezingrova, Antonin Minarik, Josef Chmelar, Romana Sulakova, Sergej Karel, Vladimir Velebny
  • MEDICAL PREPARATION WITH A CARRIER BASED ON HYALURONAN AND/OR DERIVATIVES THEREOF, METHOD OF PREPARATION AND USE THEREOF
    Publication number: 20190328891
    Abstract: Disclosed is a method of preparing a medical preparation with a carrier based on hyaluronan and/or its derivatives, which can be used in the field of medicine and cosmetics. The medical preparation comprises a conjugate of hyaluronic acid and/or its derivative with a medical substance, according to the general formula A-S—N, where: A is the medical substance; S is the way of linking the medical substance with the carrier; and N is the carrier based on hyaluronic acid and/or its derivatives.
    Type: Application
    Filed: December 19, 2017
    Publication date: October 31, 2019
    Inventors: Sergej KAREL, Martin FLEGEL, Romana SULAKOVA, Roman FRYCAK, Jana SOGORKOVA, Jiri BETAK, Josef CHMELAR, Vojtech ZAPOTOCKY, Vladimir VELEBNY
  • Self-Supporting, Biodegradable Film Based on Hydrophobized Hyaluronic Acid, Method of Preparation and Use Thereof
    Publication number: 20180105610
    Abstract: The invention relates to a self-supporting, biodegradable film comprising a C10-C22-acylated derivative of hyaluronic acid according to the general formula (I), where R is H+ or Na+, and where R1 is H or —C(?O)CxHy, where x is an integer within the range from 9 to 21 and y is an integer within the range from 11 to 43 and CxHy is a linear or branched, saturated or unsaturated C9-C21 chain, wherein in at least one repeating unit one or more of R1 is —C(?O)CxHy and where n is within the range from 12 to 4000; a method of preparation thereof and use thereof.
    Type: Application
    Filed: March 9, 2016
    Publication date: April 19, 2018
    Inventors: Marcela Dusankova, Gloria Huerta-Angeles, Kristina Nesporova, Klara Slezingrova, Antonin Minarik, Josef Chmelar, Romana Sulakova, Sergej Karel, Vladimir Velebny