Patents by Inventor David A. Czekai

David A. Czekai 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: 20230405021
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 21, 2023
    Inventors: David CZEKAI, Maciej GASIOR, Lorianne MASUOKA, Julia TSAI, Joseph HULIHAN, Alex AIMETTI
  • Publication number: 20230390305
    Abstract: This disclosure relates to a solid pharmaceutical formulation comprising an amorphous neurosteroid dispersed in a polymer matrix that is suitable for oral administration. The disclosure also relates to methods for effectively treating an epileptic disorder, central nervous system disorder, or a neurological disorder. The methods disclosed herein comprise orally administering to a subject in need thereof a therapeutically effective amount of the solid pharmaceutical formulation disclosed herein comprising an amorphous neurosteroid, preferably ganaxolone dispersed in a polymer matrix.
    Type: Application
    Filed: July 20, 2023
    Publication date: December 7, 2023
    Inventors: David CZEKAI, Vinod TULIANI, Michael SAPORITO
  • Patent number: 11679117
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: June 20, 2023
    Assignee: Marinus Pharmaceuticals, Inc.
    Inventors: David Czekai, Maciej Gasior, Lorianne Masuoka, Julia Tsai, Joseph Hulihan, Alex Aimetti
  • Publication number: 20230181600
    Abstract: The disclosure provides an injectable neurosteroid nanoparticle formulation comprising nanoparticles having a D50 of less than 2000 nm the nanoparticles comprising a neurosteroid of Formula I, where the variables R1-R9 and X are defined herein and at least one surface stabilizer. The surface stabilizer can be a polymeric surface stabilizer such as hydroxyethyl starch, dextran, or povidone. The injectable neurosteroid nanoparticle formulation can be an intravenous formulation. The disclosure also provides a lyophilized powder of the injectable neurosteroid nanoparticle formulation that can be reconstituted in an aqueous solution prior to administration. The disclosure provides injectable neurosteroid nanoparticle formulations and dry powders of such formulations that have been sterilized by ebeam irradiation.
    Type: Application
    Filed: February 10, 2023
    Publication date: June 15, 2023
    Inventors: Mingbao ZHANG, Raymond C. GLOWAKY, David CZEKAI
  • Publication number: 20220265680
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Application
    Filed: April 26, 2022
    Publication date: August 25, 2022
    Inventors: David CZEKAI, Maciej GASIOR, Lorianne MASUOKA, Julia TSAI, Joseph HULIHAN, Alex AIMETTI
  • Publication number: 20220202831
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Application
    Filed: August 4, 2021
    Publication date: June 30, 2022
    Inventors: David CZEKAI, Maciej GASIOR, Lorianne MASUOKA, Julia TSAI, Joseph HULIHAN, Alex AIMETTI
  • Patent number: 11110100
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: September 7, 2021
    Assignee: Marinus Pharmaceuticals, Inc.
    Inventors: David Czekai, Maciej Gasior, Lorianne Masuoka, Julia Tsai, Joseph Hulihan, Alex Aimetti
  • Publication number: 20210186987
    Abstract: This invention relates to methods for treating status epilepticus by administering to the subject in need thereof an intravenous bolus of ganaxolone and a continuous intravenous infusion of a neurosteroid. The method provides SE suppression and continued suppression of SE.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 24, 2021
    Inventors: David CZEKAI, Maciej GASIOR, Lorianne MASUOKA, Julia TSAI, Joseph HULIHAN, Alex AIMETTI
  • Patent number: 11000531
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurosteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: May 11, 2021
    Assignee: Marinus Pharmaceuticals, Inc.
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A. Czekai
  • Publication number: 20210128583
    Abstract: The disclosure provides an injectable neurosteroid nanoparticle formulation comprising nanoparticles having a D50 of less than 2000 nm the nanoparticles comprising a neurosteroid of Formula I, where the variables R1-R9 and X are defined herein and at least one surface stabilizer,. The surface stabilizer can be a polymeric surface stabilizer such as hydroxyethyl starch, dextran, or povidone. The injectable neurosteroid nanoparticle formulation can be an intravenous formulation. The disclosure also provides a lyophilized powder of the injectable neurosteroid nanoparticle formulation that can be reconstituted in an aqueous solution prior to administration. The disclosure provides injectable neurosteroid nanoparticle formulations and dry powders of such formulations that have been sterilized by ebeam irradiation.
    Type: Application
    Filed: August 13, 2020
    Publication date: May 6, 2021
    Inventors: Mingbao Zhang, Raymond C. Glowaky, David Czekai
  • Patent number: 10780099
    Abstract: The disclosure provides an injectable neurosteroid nanoparticle formulation comprising nanoparticles having a D50 of less than 2000 nm the nanoparticles comprising a neurosteroid of Formula I, where the variables R1-R9 and X are defined herein and at least one surface stabilizer. The surface stabilizer can be a polymeric surface stabilizer such as hydroxyethyl starch, dextran, or povidone. The injectable neurosteroid nanoparticle formulation can be an intravenous formulation. The disclosure also provides a lyophilized powder of the injectable neurosteroid nanoparticle formulation that can be reconstituted in an aqueous solution prior to administration. The disclosure provides injectable neurosteroid nanoparticle formulations and dry powders of such formulations that have been sterilized by ebeam irradiation.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 22, 2020
    Assignee: MARINUS PHARMACEUTICALS, INC.
    Inventors: Mingbao Zhang, Raymond C. Glowaky, David Czekai
  • Publication number: 20200289530
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurossteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Application
    Filed: March 25, 2020
    Publication date: September 17, 2020
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A. Czekai
  • Patent number: 10639317
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurosteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 5, 2020
    Assignee: MARINUS PHARMACEUTICALS INC.
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A Czekai
  • Publication number: 20190321375
    Abstract: The disclosure provides a method of eliciting electroencephalographic burst suppression or electroencephalographic suppression in a patient. the method includes administering to the patient a formulation comprising neurosteroid nanoparticles having a D50 of less than 2 microns and a polymeric surface stabilizer chosen from hydroxyethyl starch, dextran, and povidone and 0.1 to 50 mg of the neurosteroid per 1 kg of the patient's body weight The neurosteroid may be administered intravenously, intramuscularly, subcutaneously, or orally. Continuous intravenous administration and intravenously, intramuscularly, subcutaneously, or orally administering sequential bolus doses comprising 0.5 mg of ganaxolone per 1 kg of body weight in a human patient, with an interval of less than 30 minutes between two consecutive doses are included in the disclosure.
    Type: Application
    Filed: October 13, 2017
    Publication date: October 24, 2019
    Inventors: Michael SAPORITO, Albena PATRONEVA, David CZEKAI
  • Patent number: 10391105
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurossteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: August 27, 2019
    Assignee: MARINUS PHARMACEUTICALS INC.
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A Czekai
  • Publication number: 20190167698
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurosteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Application
    Filed: October 3, 2018
    Publication date: June 6, 2019
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A. Czekai
  • Publication number: 20180296487
    Abstract: The disclosure provides a sustained release injectable neurosteroid formulation comprising neurosteroid particles having a D50 of less than 10 microns, the neurosteroid particles comprising a neurosteroid of Formula I: or a pharmaceutically acceptable salt thereof, wherein: is a double or single bond and the variables, e.g., R1, R2, R3, R4, R4a, R5, R6, R7, R8, R9, R10, and R10a are described herein. The formulation comprises neurosteroid particles comprising the neurosteroid and a polymeric surface stabilizer and provides an effective plasma concentration of the neurosteroid at steady state for at least 48 hours, and in some embodiments for at least 4 weeks. The sustained release injectable neurosteroid formulation can formulated for intramuscular or subcutaneous administration.
    Type: Application
    Filed: April 18, 2018
    Publication date: October 18, 2018
    Inventors: Michael Saporito, Mingbao Zhang, Raymond C. Glowaky, David Czekai
  • Publication number: 20180071315
    Abstract: The disclosure provides a method of treating a patient having postpartum depression, premenstrual dysphoric disorder, menopausal depression, or delirium tremens comprising administering an effective amount of an injectable neurosteroid formulation to the patient. In certain embodiments the injectable neurosteroid formulation is an injectable ganaxolone formulation. Two types of injectable neurosteroid formulations may be used in the disclosed methods. The first such formulation is an injectable formulation containing ganaxolone and sulfobutyl ether ?-cyclodextrin in a 1:1 inclusion complex. The second such formulation is an injectable neurossteroid formulation comprising a neurosteroid, preferably ganaxolone, but which may be a neurosteroid selected from allopregnanolone, ganaxolone, alphaxalone, alphadolone, hydroxydione, minaxolone, pregnanolone, tetrahydrocorticosterone, and combinations of the foregoing; a surface stabilizer selected from hydroxyl ethyl starch, dextran, and povidone; and a surfactant.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 15, 2018
    Inventors: Christopher Cashman, Jaakko Lappalainen, David A. Czekai
  • Publication number: 20170258812
    Abstract: The disclosure provides an injectable neurosteroid nanoparticle formulation comprising nanoparticles having a D50 of less than 2000 nm the nanoparticles comprising a neurosteroid of Formula I, where the variables R1-R9 and X are defined herein and at least one surface stabilizer. The surface stabilizer can be a polymeric surface stabilizer such as hydroxyethyl starch, dextran, or povidone. The injectable neurosteroid nanoparticle formulation can be an intravenous formulation. The disclosure also provides a lyophilized powder of the injectable neurosteroid nanoparticle formulation that can be reconstituted in an aqueous solution prior to administration. The disclosure provides injectable neurosteroid nanoparticle formulations and dry powders of such formulations that have been sterilized by ebeam irradiation.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 14, 2017
    Inventors: Mingbao Zhang, Raymond C. Glowaky, David Czekai
  • Publication number: 20150343453
    Abstract: A system for wet milling or dry milling at least one material. The system includes a milling apparatus and at least one milling medium. The milling apparatus includes a chamber, at least one inlet, at least one outlet and a fluid pump. The fluid pump facilitates concomitant flow of the milling medium and material to be milled within the milling chamber to effect milling of the material.
    Type: Application
    Filed: May 25, 2015
    Publication date: December 3, 2015
    Applicant: NanoCentrix L.L.C.
    Inventor: David A. Czekai