Patents by Inventor Bertha Moran-Delgado

Bertha Moran-Delgado 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).

  • Energy and environmentally integrated method for production of aromatic dicarboxylic acids by oxidation
    Patent number: 10000435
    Abstract: A continuous process for oxidizing a di-alkyl substituted aromatic compound with compressed air in a primary bubble column reactor; including removing a portion of the three phase reaction medium to a post-oxidation bubble column unit supplied with compressed air separating the post oxidation reaction medium to an overhead gas and an underflow slurry; collecting overhead gases from the oxidation reactors and the de-gassing unit and conducting the combined overhead gases to a water removal column (WRC); transferring the underflow slurry from the de-gassing unit to a digestion unit to effect further oxidation without addition of air to the digestion unit; removing overhead gases to the water removal column; crystallizing the final oxidation slurry; and filtering the slurry on a rotary pressure filter; wherein a portion of the energy of the off gas from the WRC is employed to drive an air compressor to supply the compressed air for oxidation.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 19, 2018
    Assignee: GRUPO PETROTEMEX, S.A. DE C.V.
    Inventors: José Gabriel Quintero Barajas, Pamela Shantal Ramírez Sosa, Alfredo Escobar López, Verona Medina Valencia, Arturo Bulbarela Croda, Bertha Morán Delgado
  • Reactor for the efficient oxidation of alkyl aromatic compounds
    Patent number: 7887765
    Abstract: A method and apparatus for the conversion of aromatic alkyls to aromatic carboxylic acids in a reactor are provided, wherein the location of the feeding of the reaction mixture into the reactor significantly increases the conversion efficiency of the precursor materials.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: February 15, 2011
    Assignee: Tereftalatos Mexicanos, S.A. de C.V.
    Inventors: Fernando Varela-Fuentes, Arturo Bulbarela-Croda, Guillermo Ramirez-Aguilar, Bertha Moran-Delgado
  • Process and apparatus for the efficient oxidation of alkyl aromatic compounds
    Publication number: 20080025887
    Abstract: A method and apparatus for the conversion of aromatic alkyls to aromatic carboxylic acids in a reactor are provided, wherein the location of the feeding of the reaction mixture into the reactor significantly increases the conversion efficiency of the precursor materials.
    Type: Application
    Filed: June 21, 2007
    Publication date: January 31, 2008
    Applicant: TEREFTALATOS MEXICANOS, S.A. de C.V.
    Inventors: Fernando Verela-Fuentes, Arturo Bulbarela-Croda, Guillermo Ramirez-Aguilar, Bertha Moran-Delgado
  • Process and apparatus for the efficient oxidation of alkyl aromatic compounds
    Patent number: 7273950
    Abstract: A method and apparatus for the conversion of aromatic alkyls to aromatic carboxylic acids in a reactor are provided, wherein the location of the feeding of the reaction mixture into the reactor significantly increases the conversion efficiency of the precursor materials.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: September 25, 2007
    Assignee: Tereftalatos Mexicanos, S.A. de C.V.
    Inventors: Fernando Varela-Fuentes, Arturo Bulbarela-Croda, Guillermo Ramirez-Aguilar, Bertha Moran-Delgado
  • Process and apparatus for the efficient oxidation of alkyl aromatic compounds
    Publication number: 20040254397
    Abstract: A method and apparatus for the conversion of aromatic alkyls to aromatic carboxylic acids in a reactor are provided, wherein the location of the feeding of the reaction mixture into the reactor significantly increases the conversion efficiency of the precursor materials.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Applicant: TEREFTALATOS MEXICANOS, S.A. de C.V.
    Inventors: Fernando Varela-Fuentes, Arturo Bulbarela-Croda, Guillermo Ramirez-Aguilar, Bertha Moran-Delgado