Patents by Inventor Royce Macwan

Royce Macwan 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).

  • Patent number: 11447433
    Abstract: Enhanced oxygen transfer agent systems and methods of use thereof are provided. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent includes an oxygen-donating chalcogen agent including at least one of S, Se, or Te and a reducible metal oxide. The chalcogen has an oxidation state greater than +2. A method for producing one or more olefins by partial combustion of a hydrocarbon feed is provided. The method includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaSO4 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: September 20, 2022
    Assignee: EcoCatalytic Inc.
    Inventors: John A. Sofranko, Royce Macwan, Elena Y. Chung, C. Andrew Jones
  • Publication number: 20210147322
    Abstract: Enhanced oxygen transfer agent systems and methods of use thereof are provided. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent includes an oxygen-donating chalcogen agent including at least one of S, Se, or Te and a reducible metal oxide. The chalcogen has an oxidation state greater than +2. A method for producing one or more olefins by partial combustion of a hydrocarbon feed is provided. The method includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaSO4 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 20, 2021
    Applicant: EcoCatalytic Inc.
    Inventors: John A. SOFRANKO, Royce MACWAN, Elena Y. CHUNG, C. Andrew Jones
  • Patent number: 10968149
    Abstract: Aspects of the invention relate to enhanced oxygen transfer agent systems and methods of use thereof. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent comprising an oxygen-donating chalcogen agent comprised of at least one of S, Se, or Te and a reducible metal oxide. The chalcogen having an oxidation state greater than +2. According to another aspect, a method for producing one or more olefins by partial combustion of a hydrocarbon feed includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaS04 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 6, 2021
    Assignee: EcoCatalytic Inc.
    Inventors: John A. Sofranko, Royce Macwan, Elena Y. Chung, C. Andrew Jones
  • Patent number: 10604460
    Abstract: Aspects of the invention relate to producing olefins by oxidative dehydrogenation cocracking of a hydrocarbon feed. In one embodiment, the method includes oxidative cocracking a hydrocarbon feed comprised of at least one alkane having a carbon chain of five or more and at least one alkane having a carbon chain of four or less by contacting the hydrocarbon feed with a metal oxide, such that the cracking of the at least one alkane having a carbon chain of four or less produces olefins and is exothermic, and the cracking of the at least one alkane having a carbon chain of five or more produces olefins and is endothermic. The method further includes utilizing the energy produced from the exothermic cracking of the alkane having a carbon chain of four or less for the endothermic cracking of the alkane having a carbon chain of five or more, and collecting the product.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: March 31, 2020
    Assignee: EcoCatalytic Inc.
    Inventors: John A. Sofranko, Royce Macwan, Elena Y. Chung, C. Andrew Jones
  • Publication number: 20200062677
    Abstract: Aspects of the invention relate to enhanced oxygen transfer agent systems and methods of use thereof. According to one aspect, a method for producing olefins from a hydrocarbon feed includes the step of contacting a hydrocarbon feed comprised of one or more alkanes with an oxygen transfer agent at a temperature of 350° C. to 1000° C. The oxygen transfer agent comprising an oxygen-donating chalcogen agent comprised of at least one of S, Se, or Te and a reducible metal oxide. The chalcogen having an oxidation state greater than +2. According to another aspect, a method for producing one or more olefins by partial combustion of a hydrocarbon feed includes partially combusting a hydrocarbon feed comprised of one or more alkanes by contacting the hydrocarbon feed with an oxygen transfer agent comprising CaS04 at a temperature of 350° C. to 1000° C. to produce one or more olefins comprising ethylene and coproducing water.
    Type: Application
    Filed: June 27, 2017
    Publication date: February 27, 2020
    Applicant: EcoCatalytic Inc.
    Inventors: John A. SOFRANKO, Royce MACWAN, Elena Y. CHUNG, C. Andrew JONES
  • Publication number: 20190315667
    Abstract: Aspects of the invention relate to producing olefins by oxidative dehydrogenation cocracking of a hydrocarbon feed. In one embodiment, the method includes oxidative cocracking a hydrocarbon feed comprised of at least one alkane having a carbon chain of five or more and at least one alkane having a carbon chain of four or less by contacting the hydrocarbon feed with a metal oxide, such that the cracking of the at least one alkane having a carbon chain of four or less produces olefins and is exothermic, and the cracking of the at least one alkane having a carbon chain of five or more produces olefins and is endothermic. The method further includes utilizing the energy produced from the exothermic cracking of the alkane having a carbon chain of four or less for the endothermic cracking of the alkane having a carbon chain of five or more, and collecting the product.
    Type: Application
    Filed: October 19, 2017
    Publication date: October 17, 2019
    Applicant: EcoCatalytic Inc.
    Inventors: John A. Sofranko, Royce Macwan, Elena Y. Chung, C. Andrew Jones