Patents by Inventor Rafael ACEVEDO

Rafael ACEVEDO 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).

  • Publication number: 20240029948
    Abstract: Systems and devices for wireless power transmission is provided. A system includes a ground assembly and a vehicle assembly. The ground assembly includes a primary coil and a magnetic permeable core. The vehicle assembly includes a secondary coil capable of being inductively coupled to the primary coil and one or more magnetic permeable wings disposed on top of the secondary coil. Each of the one or more magnetic permeable wings overlap the secondary coil such that each of the one or more magnetic permeable wings extend within and beyond a periphery of the secondary coil for generating additional coupling between the primary coil and the secondary coil.
    Type: Application
    Filed: July 24, 2023
    Publication date: January 25, 2024
    Inventors: Steven NIEDERHAUSER, Mickel BUDHIA, Dorde LEKIC, Mauricio ESGUERRA, Rafael ACEVEDO
  • Patent number: 11291982
    Abstract: The invention relates to the field of oligomerization of olefins to produce linear ?-olefins, in particular hexene-1, with the use of a catalyst system. The catalyst system comprises a chromium source compound, a nitrogen-containing ligand, alkylaluminum, and a zinc compound, wherein catalyst system is activated during its preparation by 1) heating some and SHF irradiation (microwave irradiation) of alkylaluminum or a mixture of the alkylaluminum and the zinc compound, or by 2) heating alkylaluminum or a mixture of the alkylaluminum and the zinc compound, followed by holding (aging) the prepared catalyst system for a certain period of time.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: April 5, 2022
    Assignee: PUBLIC JOINT STOCK COMPANY SIBUR HOLDING
    Inventors: Denis Alekseevich Lenev, Rafael Acevedo Forero
  • Patent number: 10807922
    Abstract: The present invention relates to a method of preparing ?-olefins by oligomerization of C2-C4 olefins. The method is carried out by oligomerization of C2-C4 olefins in the presence of a catalyst system comprising a transition metal source, an activator, which is an alkylaluminoxane, and a compound of formula (I), Ar1Ar2P—N(R)—PAr3Ar4 [formula I], wherein Ar1-4 are the same or different and are selected from substituted or unsubstituted C6-C10 aryl, R is selected from linear or branched C1-C4 alkyl, substituted or unsubstituted C6-C10 aryl, and substituted or unsubstituted C3-C10 cycloalkyl, wherein the oligomerization is carried out in a solvent, which is a bicyclic compound or a mixture of bicyclic compounds, preferably decalin. The claimed method provides a significant increase in the activity of the catalyst during the oligomerization process and, as a consequence, a reduction in the catalyst unit consumption, as well a reduction in the formation of polymer by-product.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 20, 2020
    Assignee: PUBLIC JOINT STOCK COMPANY “SIBUR HOLDING”
    Inventors: Vladislav Alexandrovich Kardash, Denis Alekseevich Lenev, Maxim Vladimirovich Lipskikh, Rafael Acevedo Forero
  • Publication number: 20190336955
    Abstract: The invention relates to the field of oligomerization of olefins to produce linear ?-olefins, in particular hexene-1, with the use of a catalyst system. The catalyst system comprises a chromium source compound, a nitrogen-containing ligand, alkylaluminum, and a zinc compound, wherein catalyst system is activated during its preparation by 1) heating some and SHF irradiation (microwave irradiation) of alkylaluminum or a mixture of the alkylaluminum and the zinc compound, or by 2) heating alkylaluminum or a mixture of the alkylaluminum and the zinc compound, followed by holding (aging) the prepared catalyst system for a certain period of time.
    Type: Application
    Filed: November 14, 2016
    Publication date: November 7, 2019
    Applicant: Public Joint Stock Company "Sibur Holding"
    Inventors: Denis Alekseevich LENEV, Rafael ACEVEDO FORERO
  • Publication number: 20190144357
    Abstract: The present invention relates to a method of preparing ?-olefins by oligomerization of C2-C4 olefins. The method is carried out by oligomerization of C2-C4 olefins in the presence of a catalyst system comprising a transition metal source, an activator, which is an alkylaluminoxane, and a compound of formula (I), Ar1Ar2P—N(R)—PAr3Ar4 [formula I], wherein Ar1-4 are the same or different and are selected from substituted or unsubstituted C6-C10 aryl, R is selected from linear or branched C1-C4 alkyl, substituted or unsubstituted C6-C10 aryl, and substituted or unsubstituted C3-C10 cycloalkyl, wherein the oligomerization is carried out in a solvent, which is a bicyclic compound or a mixture of bicyclic compounds, preferably decalin. The claimed method provides a significant increase in the activity of the catalyst during the oligomerization process and, as a consequence, a reduction in the catalyst unit consumption, as well a reduction in the formation of polymer by-product.
    Type: Application
    Filed: July 15, 2016
    Publication date: May 16, 2019
    Applicant: PUBLIC JOINT STOCK COMPANY "SIBUR HOLDING"
    Inventors: Vladislav Alexandrovich KARDASH, Denis Alekseevich LENEV, Maxim Vladimirovich LIPSKIKH, Rafael ACEVEDO FORERO