Patents by Inventor Guochen Chi

Guochen Chi 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).

  • Publication number: 20240084012
    Abstract: An isolated bispecific antibody or antigen-binding portion thereof includes a first chain which specifically binds to human PD-1(hPD-1) and blocks the interaction between hPD-1 and PD-L1, and a second chain which specifically binds to human CD47 and inhibits its interaction with SIRP-alpha, where the first chain and the second chain are coupled in a knob-in-hole format through their respective CH3 domain.
    Type: Application
    Filed: December 31, 2021
    Publication date: March 14, 2024
    Inventors: Chun-Jen LIN, Cheng-Chi CHAO, Chang-Hsin Chen, Gloria Guohong ZHANG, Guochen YAN
  • Publication number: 20230355550
    Abstract: Disclosed are compounds comprising ketamine (2-(2-chlorophenyl)-2-(methylamino)-cyclohexanone) chemically conjugated to one or more oxoacids, amino acids, polyethylene glycols (PEG or PEO), peptides, phosphates, and/or vitamin compounds, and salts of such compounds. Also disclosed are compositions comprising at least one ketamine compound, or a salt thereof, methods of making such compounds, and methods of using such ketamine compounds and compositions.
    Type: Application
    Filed: July 20, 2023
    Publication date: November 9, 2023
    Inventors: Guochen CHI, Sven GUENTHER, Travis MICKLE, Adam SMITH
  • Patent number: 11753378
    Abstract: Disclosed are compounds comprising ketamine (2-(2-chlorophenyl)-2-(methylamino)-cyclohexanone) chemically conjugated to one or more oxoacids, amino acids, polyethylene glycols (PEG or PEO), peptides, phosphates, and/or vitamin compounds, and salts of such compounds. Also disclosed are compositions comprising at least one ketamine compound, or a salt thereof, methods of making such compounds, and methods of using such ketamine compounds and compositions.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: September 12, 2023
    Assignee: Zevra Therapeutics, Inc.
    Inventors: Guochen Chi, Sven Guenther, Travis Mickle, Adam Smith
  • Publication number: 20230117289
    Abstract: The present technology is directed serdexmethylphenidate compounds and methods for synthesizing a compound having the formula
    Type: Application
    Filed: February 23, 2021
    Publication date: April 20, 2023
    Inventors: Sven Guenther, Guochen Chi, Travis Mickle
  • Patent number: 11505537
    Abstract: The present technology is directed to compositions comprising d-threo-methylphenidate conjugates and/or unconjugated methylphenidate. The present technology also relates to compositions and oral formulations comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to a pharmaceutical kit containing the composition comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 22, 2022
    Assignee: KEMPHARM, INC.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Publication number: 20220348544
    Abstract: Disclosed are compounds comprising ketamine (2-(2-chlorophenyl)-2-(methylamino)-cyclohexanone) chemically conjugated to one or more oxoacids, amino acids, polyethylene glycols (PEG or PEO), peptides, phosphates, and/or vitamin compounds, and salts of such compounds. Also disclosed are compositions comprising at least one ketamine compound, or a salt thereof, methods of making such compounds, and methods of using such ketamine compounds and compositions.
    Type: Application
    Filed: April 18, 2022
    Publication date: November 3, 2022
    Inventors: Guochen CHI, Sven GUENTHER, Travis MICKLE, Adam SMITH
  • Publication number: 20220064116
    Abstract: Disclosed are d-amphetamine compounds and compositions comprising at least one organic acid covalently bound to d-amphetamine, having the structure of a salt thereof, a derivative thereof, or a combination thereof. Methods of making and using the same are also disclosed.
    Type: Application
    Filed: October 13, 2021
    Publication date: March 3, 2022
    Inventors: Sven Guenther, Guochen Chi, Travis Mickle
  • Patent number: 11174229
    Abstract: Disclosed are d-amphetamine compounds and compositions comprising at least one organic acid covalently bound to d-amphetamine, having the structure of a salt thereof, a derivative thereof, or a combination thereof. Methods of making and using the same are also disclosed.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: November 16, 2021
    Assignee: KemPharm, Inc.
    Inventors: Sven Guenther, Guochen Chi, Travis Mickle
  • Patent number: 11136295
    Abstract: Disclosed are d-amphetamine compounds and compositions comprising at least one organic acid covalently bound to d-amphetamine, a salt thereof, a derivative thereof, or a combination thereof. Methods of making and using the same are also disclosed.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 5, 2021
    Assignee: KEMPHARM, INC.
    Inventors: Sven Guenther, Guochen Chi, Travis Mickle
  • Publication number: 20210253552
    Abstract: The present technology is directed to d-threo-methylphenidate conjugates and a composition comprising d-threomethylphenidate conjugated to nicotinoyl-L-serine, or salt thereof. The present technology also relates to a composition comprising at least one conjugate of d-methylphenidate having at least two or more chiral centers. The composition is optically active. The present technology additionally relates to oral formulations and pharmaceutical kits comprising at least one d-threo-methylphenidate conjugate.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 19, 2021
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 11021459
    Abstract: The present technology is directed to d-threo-methylphenidate conjugates and a composition comprising d-threomethylphenidate conjugated to nicotinoyl-L-serine, or salt thereof. The present technology also relates to a composition comprising at least one conjugate of d-methylphenidate having at least two or more chiral centers. The composition is optically active. The present technology additionally relates to oral formulations and pharmaceutical kits comprising at least one d-threo-methylphenidate conjugate. The pharmaceutical kit may comprise a specified amount of individual doses in a package. Each individual dose in the package may contain a pharmaceutically effective amount of a conjugate of d-threo methylphenidate.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: June 1, 2021
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 11021460
    Abstract: The present technology is directed to d-threo-methylphenidate conjugates and a composition comprising d-threomethylphenidate conjugated to nicotinoyl-L-serine, or salt thereof. The present technology also relates to a composition comprising at least one conjugate of d-methylphenidate having at least two or more chiral centers. The composition is optically active. The present technology additionally relates to oral formulations and pharmaceutical kits comprising at least one d-threo-methylphenidate conjugate. The pharmaceutical kit may comprise a specified amount of individual doses in a package. Each individual dose in the package may contain a pharmaceutically effective amount of a conjugate of d-threo methylphenidate.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: June 1, 2021
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Publication number: 20210130322
    Abstract: The present technology is directed to compositions comprising d-threo-methylphenidate conjugates and/or unconjugated methylphenidate. The present technology also relates to compositions and oral formulations comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to a pharmaceutical kit containing the composition comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: December 8, 2020
    Publication date: May 6, 2021
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10954213
    Abstract: The present technology is directed to compositions comprising d-threo-methylphenidate conjugates and unconjugated methylphenidate. The present technology also relates to compositions and oral formulations comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to a pharmaceutical kit containing the composition comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: March 23, 2021
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10954212
    Abstract: The present technology is directed to d-threo-methylphenidate conjugates and a composition comprising d-threomethylphenidate conjugated to nicotinoyl-L-serine, or salt thereof. The present technology also relates to a composition comprising at least one conjugate of d-methylphenidate having at least two or more chiral centers. The composition is optically active. The present technology additionally relates to oral formulations and pharmaceutical kits comprising at least one d-threo-methylphenidate conjugate. The pharmaceutical kit may comprise a specified amount of individual doses in a package. Each individual dose in the package may contain a pharmaceutically effective amount of a conjugate of d-threo methylphenidate.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 23, 2021
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10870654
    Abstract: Compositions comprising hydrocodone benzoic acid enol ester to form novel prodrugs including hydrocodone benzoic acid enol ester salts, and various polymorphs. Also provided are processes for the preparation of hydrocodone benzoic acid enol ester salts, and various polymorphs.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: December 22, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Christal Mickle, Guochen Chi, Jaroslaw Kanski, Andrea K. Martin, Bindu Bera
  • Patent number: 10858341
    Abstract: The present technology is directed to compositions comprising d-threo-methylphenidate conjugates and unconjugated methylphenidate. The present technology also relates to compositions and oral formulations comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to a pharmaceutical kit containing the composition comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: December 8, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10849981
    Abstract: The presently described technology provides methods of treating a patient having moderate to severe pain, narcotic or opioid abuse or narcotic or opioid withdrawal. The presently described methods are carried out by comprising administering to the patient a pharmaceutically effective amount of a composition comprising acetaminophen and benzoate-hydrocodone hydrochloride. The composition has reduced side effects when compared with unconjugated hydrocodone.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: December 1, 2020
    Assignee: KemPham, Inc.
    Inventors: Travis Mickle, Sven Guenther, Christal Mickle, Guochen Chi, Jaroslaw Kanski, Andrea K. Martin, Bindu Bera
  • Patent number: 10759778
    Abstract: The present technology is directed to compositions comprising d-threo-methylphenidate conjugates and unconjugated methylphenidate. The present technology also relates to compositions and oral formulations comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to a pharmaceutical kit containing the composition comprising d-threo-methylphenidate conjugated to nicotinoyl-L-serine, and/or a pharmaceutically acceptable salt thereof, and unconjugated methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 1, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Publication number: 20200237742
    Abstract: The present technology is directed to one or more compositions comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology also relates to one or more compositions and oral formulations comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology also relates to one or more methods of using compositions comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof. The present technology additionally relates to one or more pharmaceutical kits containing a composition comprising serdexmethylphenidate conjugates and unconjugated d-methylphenidate and/or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: February 27, 2020
    Publication date: July 30, 2020
    Inventors: Sven Guenther, Guochen Chi, Travis Mickle