Patents Assigned to KemPharm, Inc.
  • 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
  • Patent number: 11234975
    Abstract: The presently described technology provides compositions of one or more of oxoacids, amino acids, polyethylene glycols, and/or vitamin compounds chemically conjugated to levorphanol ((?)-17-methylmorphinan-3-ol) to form novel prodrugs and compositions of levorphanol.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: February 1, 2022
    Assignee: KEMPHARM, INC.
    Inventors: Travis Mickle, Sven Guenther, Sanjib Bera
  • Patent number: 11214544
    Abstract: The presently described technology provides compositions of one or more of oxoacids, polyethylene glycols, and/or vitamin compounds chemically conjugated to dextrorphan, (+)-17-methylmorphinan-3-ol), to form novel prodrugs and compositions of dextrorphan.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: January 4, 2022
    Assignee: KEMPHARM, INC.
    Inventors: Travis Mickle, Sven Guenther, Sanjib Bera
  • 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
  • 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
  • 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: 10912744
    Abstract: The present invention provides drug therapy formulations for reducing the side effects associated with a therapeutic. In some embodiments, the present invention provides a reduction in sleep- and diet-related side effects associated with a therapeutic.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: February 9, 2021
    Assignee: KemPharm, Inc.
    Inventor: Subhash Desai
  • 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: 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
  • Patent number: 10758528
    Abstract: The presently described technology provides compositions comprising aryl carboxylic acids and, for example NSAIDs, chemically conjugated to oxymorphone (4,5-?-epoxy-3,14-dihydroxy-17-methylmorphinan-6-one) to form novel prodrugs/compositions of oxymorphone, including benzoates, salicylates, propionates, fenamates, and acetates, which have a decreased potential for abuse of oxymorphone. The present technology also provides methods of treating patients, pharmaceutical kits and methods of synthesizing conjugates of the present technology.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: September 1, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Sanjib Bera, Jaroslaw Kanski, Andrea Martin
  • Patent number: 10654863
    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: February 21, 2018
    Date of Patent: May 19, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Christal Mickle, Guochen Chi, Jaroslaw Kanski, Andrea K. Martin, Bindu Bera
  • Patent number: 10584112
    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: March 10, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10584113
    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: March 10, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Guochen Chi
  • Patent number: 10577376
    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: December 15, 2017
    Date of Patent: March 3, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Christal Mickle, Guochen Chi, Jaroslaw Kanski, Andrea K. Martin, Bindu Bera
  • Patent number: 10544153
    Abstract: The presently described technology provides compositions comprising aryl carboxylic acids and, for example NSAIDs, chemically conjugated to oxycodone (4,5-?-epoxy-14-hydroxy-17-methylmorphinan-6-one) to form novel prodrugs/compositions of oxycodone, including benzoates, salicylates, propionates, fenamates, and acetates, which have a decreased potential for abuse of oxycodone. The present technology also provides methods of treating patients, pharmaceutical kits and methods of synthesizing conjugates of the present technology.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: January 28, 2020
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Sanjib Bera, Bindu Bera, Jaroslaw Kanski, Andrea Martin
  • Patent number: 10463660
    Abstract: The presently described technology provides compositions comprising aryl carboxylic acids and, for example NSAIDs, chemically conjugated to oxymorphone (4,5-?-epoxy-3,14-dihydroxy-17-methylmorphinan-6-one) to form novel prodrugs/compositions of oxymorphone, including benzoates, salicylates, propionates, fenamates, and acetates, which have a decreased potential for abuse of oxymorphone. The present technology also provides methods of treating patients, pharmaceutical kits and methods of synthesizing conjugates of the present technology.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: November 5, 2019
    Assignee: KemPharm, Inc.
    Inventors: Travis Mickle, Sven Guenther, Sanjib Bera, Jaroslaw Kanski, Andrea Martin