Patents by Inventor Hugo F. LEANDRI

Hugo F. LEANDRI 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).

  • PROCESS TO MAKE CALCIUM OXIDE OR ORDINARY PORTLAND CEMENT FROM CALCIUM BEARING ROCKS AND MINERALS
    Publication number: 20230339807
    Abstract: Aspects of the invention include a method of producing a cement material comprising step of: first reacting a calcium-bearing starting material with a first acid to produce an aqueous first calcium salt; second reacting the aqueous first calcium salt with a second acid to produce a solid second calcium salt; wherein the second acid is different from the first acid and the second calcium salt is different from the first calcium salt; and thermally treating the second calcium salt to produce a first cement material. Preferably, but not necessarily, during the second reacting step, reaction between the first calcium salt and the second acid regenerates the first acid.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 26, 2023
    Applicants: California Institute of Technology, Brimstone Energy Inc.
    Inventors: Cody E. FINKE, Hugo F. LEANDRI
  • Process to make calcium oxide or ordinary Portland cement from calcium bearing rocks and minerals
    Patent number: 11718558
    Abstract: Aspects of the invention include a method of producing a cement material comprising step of: first reacting a calcium-bearing starting material with a first acid to produce an aqueous first calcium salt; second reacting the aqueous first calcium salt with a second acid to produce a solid second calcium salt; wherein the second acid is different from the first acid and the second calcium salt is different from the first calcium salt; and thermally treating the second calcium salt to produce a first cement material. Preferably, but not necessarily, during the second reacting step, reaction between the first calcium salt and the second acid regenerates the first acid.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: August 8, 2023
    Assignees: California Institute of Technology, Brimstone Energy Inc.
    Inventors: Cody E. Finke, Hugo F. Leandri
  • PROCESS TO MAKE CALCIUM OXIDE OR ORDINARY PORTLAND CEMENT FROM CALCIUM BEARING ROCKS AND MINERALS
    Publication number: 20220411328
    Abstract: Aspects of the invention include a method of producing a cement material comprising step of: first reacting a calcium-bearing starting material with a first acid to produce an aqueous first calcium salt; second reacting the aqueous first calcium salt with a second acid to produce a solid second calcium salt; wherein the second acid is different from the first acid and the second calcium salt is different from the first calcium salt; and thermally treating the second calcium salt to produce a first cement material. Preferably, but not necessarily, during the second reacting step, reaction between the first calcium salt and the second acid regenerates the first acid.
    Type: Application
    Filed: August 24, 2022
    Publication date: December 29, 2022
    Applicants: California Institute of Technology, Brimstone Energy Inc.
    Inventors: Cody E. FINKE, Hugo F. LEANDRI
  • PROCESS TO MAKE CALCIUM OXIDE OR ORDINARY PORTLAND CEMENT FROM CALCIUM BEARING ROCKS AND MINERALS
    Publication number: 20210070656
    Abstract: Aspects of the invention include a method of producing a cement material comprising step of: first reacting a calcium-bearing starting material with a first acid to produce an aqueous first calcium salt; second reacting the aqueous first calcium salt with a second acid to produce a solid second calcium salt; wherein the second acid is different from the first acid and the second calcium salt is different from the first calcium salt; and thermally treating the second calcium salt to produce a first cement material. Preferably, but not necessarily, during the second reacting step, reaction between the first calcium salt and the second acid regenerates the first acid.
    Type: Application
    Filed: August 13, 2020
    Publication date: March 11, 2021
    Inventors: Cody E. FINKE, Hugo F. LEANDRI