Patents by Inventor Steven BUCHI

Steven BUCHI 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).

  • SYSTEMS FOR TREATING AQUEOUS COMPOSITIONS COMPRISING LITHIUM SULFATE AND SULFURIC ACID
    Publication number: 20260257146
    Abstract: Systems for treating an aqueous composition comprising lithium sulfate and sulfuric acid, said system comprising: an evaporative crystallizer for crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution, and to at least substantially prevent decomposition of said crystals of lithium sulfate monohydrate into anhydrous lithium sulfate, wherein said conditions comprise the aqueous composition comprising lithium sulfate and sulfuric acid comprises from about 1 wt % to about 35 wt % lithium sulfate, based on the total weight of the aqueous composition; a separator for separating the lithium sulfate monohydrate crystals from the solution.
    Type: Application
    Filed: April 23, 2026
    Publication date: September 3, 2026
    Applicant: NEMASKA LITHIUM INC.
    Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Bertin OUELLET, Clive BRERETON, Steven BUCHI, Tsuki NAKA
  • Processes for treating aqueous compositions comprising lithium sulfate and sulfuric acid
    Patent number: 12636593
    Abstract: Processes for treating an aqueous composition comprising lithium sulfate and sulfuric acid. The processes comprise evaporatively crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution; and optionally separating the crystals of the lithium sulfate monohydrate from the lithium sulfate-reduced solution. The processes optionally further comprise concentrating the lithium sulfate-reduced solution under conditions to obtain an acidic condensate and a concentrate comprising sulfuric acid.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: May 26, 2026
    Assignee: NEMASKA LITHIUM INC.
    Inventors: Jean-François Magnan, Guy Bourassa, Nicolas Laroche, Bertin Ouellet, Clive Brereton, Steven Buchi, Tsuki Naka
  • PROCESSES FOR TREATING AQUEOUS COMPOSITIONS COMPRISING LITHIUM SULFATE AND SULFURIC ACID
    Publication number: 20220032207
    Abstract: The present disclosure relates to processes for treating an aqueous composition comprising lithium sulfate and sulfuric acid. The processes comprise evaporatively crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution; and optionally separating the crystals of the lithium sulfate monohydrate from the lithium sulfate-reduced solution. The processes optionally further comprise concentrating the lithium sulfate-reduced solution under conditions to obtain an acidic condensate and a concentrate comprising sulfuric acid.
    Type: Application
    Filed: August 9, 2021
    Publication date: February 3, 2022
    Applicant: NEMASKA LITHIUM INC.
    Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Bertin OUELLET, Clive BRERETON, Steven BUCHI, Tsuki NAKA
  • Processes for treating aqueous compositions comprising lithium sulfate and sulfuric acid
    Patent number: 11083978
    Abstract: The present disclosure relates to processes for treating an aqueous composition comprising lithium sulfate and sulfuric acid. The processes comprise evaporatively crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution; and optionally separating the crystals of the lithium sulfate monohydrate from the lithium sulfate-reduced solution. The processes optionally further comprise concentrating the lithium sulfate-reduced solution under conditions to obtain an acidic condensate and a concentrate comprising sulfuric acid.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 10, 2021
    Assignee: NEMASKA LITHIUM INC.
    Inventors: Jean-François Magnan, Guy Bourassa, Nicolas Laroche, Bertin Ouellet, Clive Brereton, Steven Buchi, Tsuki Naka
  • PROCESSES FOR TREATING AQUEOUS COMPOSITIONS COMPRISING LITHIUM SULFATE AND SULFURIC ACID
    Publication number: 20200376409
    Abstract: The present disclosure relates to processes for treating an aqueous composition comprising lithium sulfate and sulfuric acid. The processes comprise evaporatively crystallizing the aqueous composition comprising lithium sulfate and sulfuric acid under conditions to obtain crystals of lithium sulfate monohydrate and a lithium sulfate-reduced solution; and optionally separating the crystals of the lithium sulfate monohydrate from the lithium sulfate-reduced solution. The processes optionally further comprise concentrating the lithium sulfate-reduced solution under conditions to obtain an acidic condensate and a concentrate comprising sulfuric acid.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 3, 2020
    Applicant: Nemaska Lithium Inc
    Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Bertin OUELLET, Clive BRERETON, Steven BUCHI, Tsuki NAKA