Patents by Inventor Roman Schowner

Roman Schowner 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).

  • IONIC METAL ALKYLIDENE COMPOUNDS AND USE THEREOF IN OLEFINIC METATHESIS REACTIONS
    Publication number: 20210206788
    Abstract: A compound of formula (I) wherein: M is selected from Mo or W; X is selected from O or NR5; R1 and R2 are independently selected from H, C1-6 alkyl, and aryl; C1-6 alkyl and aryl optionally being substituted with one or more of C1-6 alkyl, C1-6 alkoxy, and O—C6H5; R3 is selected from a nitrogen-containing aromatic heterocycle being bound to M via said nitrogen; and from halogen; R4 is an aryl oxy group being bound to M via said oxygen of said aryl oxy group; wherein said aryl group Ar of said aryl oxy group is bound to a group Cat such to form a cationic ligand Cat+-Z—ArO—, wherein Z is either a covalent bond or a linker; R5 is alkyl or aryl, optionally substituted.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 8, 2021
    Inventors: Levente Ondi, Roman Schowner, Michael R. Buchmeiser, Iris Elser, Florian Toth, Emmanuel Robe, Benedek Vakulya
  • Immobilized metal alkylidene catalysts and use thereof in olefin metathesis
    Patent number: 10744494
    Abstract: The invention relates to immobilized metal alkylidene catalysts. The catalysts are useful in olefin metathesis.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: August 18, 2020
    Assignee: XiMo AG
    Inventors: Christophe Coperet, Margherita Puccino, Victor Mougel, Michael Buchmeiser, Roman Schowner, Csaba Hegedus, Florian Toth
  • IMMOBILIZED METAL ALKYLIDENE CATALYSTS AND USE THEREOF IN OLEFIN METATHESIS
    Publication number: 20190001315
    Abstract: The invention relates to immobilized metal alkylidene catalysts. The catalysts are useful in olefin metathesis.
    Type: Application
    Filed: December 23, 2016
    Publication date: January 3, 2019
    Applicant: KiMo AG
    Inventors: Christophe Coperet, Margherita Puccino, Victor Mougel, Michael Buchmeiser, Roman Schowner, Csaba Hegedus, Florian Toth
  • N-heterocyclic carbene complexes of metal imido alkylidenes and metal OXO alkylidenes, and the use of same
    Patent number: 10072036
    Abstract: The invention relates to an N-heterocyclic carbene complex of general formulas I to IV (I) (II) (III) (IV), according to which A1 stands for NR2 or PR2, A2 stands for CR2 R2?, NR2, PR2, 0 or S, A3 stands for N or P, and C stands for a carbene carbon atom, ring B is an unsubstituted or a mono or poly-substituted 5 to 7-membered ring, substituents R2 and R2? stand, inter alia, for a linear or branched C1-Cw-alkyl group and, if N and N each stand for NR2 or PR2, are the same or different, M in formulas I, II, III or IV stands for Cr, Mo or W, X 1 or X2 in formulas I to IV are the same or different and represent, inter alia, C1-C1s carboxylates and C1-C1s-alkoxides, Y is inter alia oxygen or sulphur, Z is inter alia a linear or branched C1-Cw-alkylenoxy group, and R 1 and R1? in formulas I to IV are, inter alia, an aliphatic or aromatic group.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: September 11, 2018
    Assignee: UNIVERSITÄT STUTTGART
    Inventors: Michael R. Buchmeiser, Suman Sen, Roman Schowner
  • N-Heterocyclic Carbene Complexes Of Metal Imido Alkylidenes And Metal OXO Alkylidenes, And The Use Of Same
    Publication number: 20170050994
    Abstract: The invention relates to an N-heterocyclic carbene complex of general formulas I to IV (I) (II) (III) (IV), according to which A1 stands for NR2 or PR2, A2 stands for CR2 R2?, NR2, PR2, 0 or S, A3 stands for N or P, and C stands for a carbene carbon atom, ring B is an unsubstituted or a mono or poly-substituted 5 to 7-membered ring, substituents R2 and R2? stand, inter alia, for a linear or branched C1-Cw-alkyl group and, if N and N each stand for NR2 or PR2, are the same or different, M in formulas I, II, III or IV stands for Cr, Mo or W, X 1 or X2 in formulas I to IV are the same or different and represent, inter alia, C1-C1s carboxylates and C1-C1s-alkoxides, Y is inter alia oxygen or sulphur, Z is inter alia a linear or branched C1-Cw-alkylenoxy group, and R 1 and R1? in formulas I to IV are, inter alia, an aliphatic or aromatic group.
    Type: Application
    Filed: April 24, 2015
    Publication date: February 23, 2017
    Applicant: UNIVERSITÄT STUTTGART
    Inventors: Michael R. Buchmeiser, Suman Sen, Roman Schowner