Patents by Inventor John J. Stevenson

John J. Stevenson 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).

  • Catalysis of diketopiperazine synthesis
    Patent number: 11292774
    Abstract: Provided is a method for the synthesis of N-protected 3,6-bis-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: April 5, 2022
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20200190041
    Abstract: Provided is a method for the synthesis of N-protected 3,6-bis-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 10604491
    Abstract: Provided is a method for the synthesis of N-protected 3,6-bis-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: March 31, 2020
    Assignee: Mannkind corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • CATALYSIS OF DIKETOPIPERAZINE SYNTHESIS
    Publication number: 20190031621
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: October 4, 2018
    Publication date: January 31, 2019
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 10112910
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: October 30, 2018
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20170369452
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 28, 2017
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 9796688
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: October 24, 2017
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20160221967
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 9346766
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: May 24, 2016
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20140243530
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 28, 2014
    Applicant: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 8748609
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: June 10, 2014
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20120178935
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: March 16, 2012
    Publication date: July 12, 2012
    Applicant: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 8202992
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: June 19, 2012
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of diketopiperazine synthesis
    Patent number: 7709639
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: May 4, 2010
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Catalysis of Diketopiperazine Synthesis
    Publication number: 20100087642
    Abstract: Provided is a method for the synthesis of N-protected bis-3,6-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 8, 2010
    Applicant: MANNKIND CORPORATION
    Inventors: John J. Stevenson, Destardi Moye-Sherman