Patents by Inventor David Alexander Learmonth

David Alexander Learmonth 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: 20220388999
    Abstract: New compounds of formula I are described: The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Application
    Filed: March 15, 2022
    Publication date: December 8, 2022
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patrício Manuel Vieira Araujo Soares Da Silva
  • Patent number: 11352447
    Abstract: Gellan gum-based hydrogels are disclosed herein for in vitro cell culture and tissue engineering and regenerative medicine applications. Such gellan gum-based hydrogels may be used alone or combined with live cells and/or biomolecules for application in humans and/or animals. Chemical modification of gellan gum with selected ion-chelating substituents affords novel gellan gum hydrogels endowed with tunable physicochemical and biological properties. The modified gellan gum hydrogels described herein present advantages over existing hydrogel systems, including solubility, ionic crosslinking versatility, ease of formulation and injectability and greater adhesiveness within biological tissues and surfaces, whilst maintaining encapsulated cells viable during long culture periods and up-regulating the expression of healthy extracellular matrix markers.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 7, 2022
    Assignee: STEMMATTERS, BIOTECNOLOGIA E MEDICINA REGENERATIVA, S.A.
    Inventors: Rui Pedro Romero Amandi De Sousa, Cristina Correia, David Alexander Learmonth
  • Publication number: 20210261533
    Abstract: Compounds of formula I and a method for their preparation are described, where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or alkyl heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Patrício Manuel V.A. Soares Da Silva, David Alexander Learmonth, Alexander Beliaev
  • Patent number: 10927193
    Abstract: The present disclosure relates to gellan gum and gellan gum-based hydrogels (GG-based hydrogels) for promoting chondrogenic, osteogenic and adipogenic differentiation of human mesenchymal stem cells, preferentially osteogenic. The present disclosure also relates to a composition for use in bone, cartilage and soft tissue engineering and regenerative medicine, preferably for use in bone.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 23, 2021
    Assignee: STEMMATTERS, BIOTECNOLOGIA E MEDICINA REGENERATIVA
    Inventors: Rui Pedro Romero Amandi De Sousa, Cristina Correia, David Alexander Learmonth, Rui Luis Gonçalves Dos Reis
  • Publication number: 20200102295
    Abstract: New compounds of formula I are described: The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Application
    Filed: June 26, 2019
    Publication date: April 2, 2020
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel V. A. Soares Da Silva
  • Publication number: 20190330384
    Abstract: Gellan gum-based hydrogels are disclosed herein for in vitro cell culture and tissue engineering and regenerative medicine applications. Such gellan gum-based hydrogels may be used alone or combined with live cells and/or biomolecules for application in humans and/or animals. Chemical modification of gellan gum with selected ion-chelating substituents affords novel gellan gum hydrogels endowed with tunable physicochemical and biological properties. The modified gellan gum hydrogels described herein present advantages over existing hydrogel systems, including solubility, ionic crosslinking versatility, ease of formulation and injectability and greater adhesiveness within biological tissues and surfaces, whilst maintaining encapsulated cells viable during long culture periods and up-regulating the expression of healthy extracellular matrix markers.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 31, 2019
    Inventors: Rui Pedro ROMERO AMANDI DE SOUSA, Cristina CORREIA, David Alexander LEARMONTH
  • Publication number: 20190322648
    Abstract: Compounds of formula I and a method for their preparation are described, where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or alkyl heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Application
    Filed: May 3, 2019
    Publication date: October 24, 2019
    Inventors: Patrício Manuel V.A. Soares Da Silva, David Alexander Learmonth, Alexander Beliaev
  • Patent number: 10336740
    Abstract: New compounds of formula I are described. The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: July 2, 2019
    Assignee: BIAL—PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel V. A. Soares Da Silva
  • Publication number: 20190144436
    Abstract: A compound of formula (I) where R1, R2, X, Y, n, m, R3, R4, R5, R6 and R7 are as defined herein, for use in the prophylaxis or treatment of a central and peripheral nervous system disorder, wherein the compound of formula (I) is administered prior to sleep, before bedtime or at bedtime.
    Type: Application
    Filed: August 28, 2018
    Publication date: May 16, 2019
    Inventors: Patricio Manuel Vieira Araujo Soares Da Silva, Teresa Lucia Silva Pereira Nunes, Lyndon Christopher Wright, Pedro Nuno Leal Palma, David Alexander Learmonth
  • Publication number: 20190010254
    Abstract: The present disclosure relates to gellan gum and gellan gum-based hydrogels (GG-based hydrogels) for promoting chondrogenic, osteogenic and adipogenic differentiation of human mesenchymal stem cells, preferentially osteogenic. The present disclosure also relates to a composition for use in bone, cartilage and soft tissue engineering and regenerative medicine, preferably for use in bone.
    Type: Application
    Filed: December 22, 2016
    Publication date: January 10, 2019
    Inventors: Rui Pedro ROMERO AMANDI DE SOUSA, Cristina CORREIA, David Alexander LEARMONTH, Rui Luís GONÇALVES DOS REIS
  • Patent number: 10065944
    Abstract: A compound of formula (I) where R1, R2, X, Y, n, m, R3, R4, R5, R6 and R7 are as defined herein, for use in the prophylaxis or treatment of a central and peripheral nervous system disorder, wherein the compound of formula (I) is administered prior to sleep, before bedtime or at bedtime.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: September 4, 2018
    Assignee: BIAL-PORTELA & CA, S.A.
    Inventors: Patricio Manuel Vieira Araujo Soares Da Silva, Teresa Lucia Silva Pereira Nunes, Lyndon Christopher Wright, Pedro Nuno Leal Palma, David Alexander Learmonth
  • Patent number: 10059696
    Abstract: The present invention relates to a process for preparing (R)-5-(2-(benzylamino)ethyl)-1-(6,8-difluorochroman-3-yl)-1H-imidazole-2(3H)-thione, and pharmaceutically acceptable salts thereof, especially the hydrochloride salt. The invention also relates to a process for making intermediates useful in the formation of said compound, and to the intermediates, per se.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 28, 2018
    Assignee: Bial-Portela & CA, S.A.
    Inventors: Alexander Beliaev, Jorge Bruno Reis Wahnon, David Alexander Learmonth, Jonathan Madec, Jean-Marie Schneider, William Maton
  • Publication number: 20170369478
    Abstract: Compounds of formula I and a method for their preparation are described, where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or alkyl heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Application
    Filed: March 9, 2017
    Publication date: December 28, 2017
    Inventors: Patricio Manuel V. A. Soares Da Silva, David Alexander Learmonth, Alexander Beliaev
  • Publication number: 20170362213
    Abstract: New compounds of formula I are described. The compounds have potentially valuable pharmaceutical properties in the treatment of some central and peripheral nervous system disorders.
    Type: Application
    Filed: January 10, 2017
    Publication date: December 21, 2017
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel V. A. Soares Da Silva
  • Patent number: 9845316
    Abstract: This invention relates to novel polymorphs of (HO)2NO2(C6H)—(C2N2O)—(C5N)(CH3)2Cl2O, to processes for their preparation, and to pharmaceutical compositions containing said novel polymorphs as active pharmaceutical ingredient.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: December 19, 2017
    Assignee: BIAL—PORTELA & CA., S.A.
    Inventor: David Alexander Learmonth
  • Patent number: 9745290
    Abstract: The invention relates to the use of an oxodiazolyl compound (I) for the preparation of a medicament for the prevention or treatment of central and peripheral nervous system associated disorders, wherein said medicament is administered according to a dosing regimen having a dosing periodicity ranging from about twice a day to about once every other day.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 29, 2017
    Assignee: BIAL—PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Laszlo Erno Kiss, Pedro Nuno Leal Palma, Humberto dos Santos Ferreira, Patricio Manuel V. A. Soares da Silva
  • Publication number: 20170190668
    Abstract: A process for preparing (S)-(+)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide or (R)-(?)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide, by reduction of oxcarbazepine in the presence of a catalyst and a hydride source is disclosed. The catalyst is prepared from a combination of [RuX2(L)]2 wherein X is chlorine, bromine or iodine, and L is an aryl or aryl-aliphatic ligand, with a ligand of formula (A) or formula (B): wherein R1 is chosen from C1-6 alkoxy and C1-6 alkyl, n is a number from 0 to 5, and when n is a number from 2 to 5, R1 can be the same or different, and R2 is alkyl, substituted alkyl, aryl, substituted aryl, alkaryl or substituted alkaryl. The hydride source is either NR3R4R5 and formic acid, [R3R4R5NH][OOCH] and optionally formic acid, or [M][OOCH]x and formic acid, wherein R3, R4 and R5 are C1-6 alkyl, M is an alkali metal or alkaline earth metal and x is 1 or 2. A pH from 6.5 to 8 is maintained during the process.
    Type: Application
    Filed: March 23, 2017
    Publication date: July 6, 2017
    Inventors: David Alexander LEARMONTH, Gabriela Alexandra GRASA, Antonio ZANOTTI-GEROSA
  • Patent number: 9643929
    Abstract: A process for preparing (S)-(+)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide or (R)-(?)-10,11-dihydro-10-hydroxy-5H-dibenz/b,f/azepine-5-carboxamide, by reduction of oxcarbazepine in the presence of a catalyst and a hydride source is disclosed. The catalyst is prepared from a combination of [RuX2(L)]2 wherein X is chlorine, bromine or iodine, and L is an aryl or aryl-aliphatic ligand, with a ligand of formula (A) or formula (B): wherein R1 is chosen from C1-6 alkoxy and C1-6 alkyl, n is a number from 0 to 5, and when n is a number from 2 to 5, R1 can be the same or different, and R2 is alkyl, substituted alkyl, aryl, substituted aryl, alkaryl or substituted alkaryl. The hydride source is either NR3R4R5 and formic acid, [R3R4R5NH][OOCH] and optionally formic acid, or [M][OOCH]x and formic acid, wherein R3, R4 and R5 are C1-6 alkyl, M is an alkali metal or alkaline earth metal and x is 1 or 2. A pH from 6.5 to 8 is maintained during the process.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: May 9, 2017
    Assignee: BIAL—PORTELA & CA, S.A.
    Inventors: David Alexander Learmonth, Gabriela Alexandra Grasa, Antonio Zanotti-Gerosa
  • Patent number: 9630955
    Abstract: There is disclosed a methylated intermediate which may be demethylated to provide an inhibitor of catechol-O-methyltransferase useful in the treatment of Parkinson's disease. Also disclosed are methods of making and using said intermediate.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: April 25, 2017
    Inventors: Domenico Russo, Laszlo Erno Kiss, Jorge Bruno Reis Wahnon, David Alexander Learmonth, Tibor Eszenyi, Axel Zimmermann, Bjoern Schlummer, Michael Kreis, Klaus Reiter
  • Patent number: 9630951
    Abstract: Compounds of formula I and a method for their preparation are described: where R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, nitro, amino, alkylcarbonylamino, alkylamino or dialkylamino group; R4 signifies -alkyl-aryl or -alkyl-heteroaryl; X signifies CH2, oxygen atom or sulphur atom; n is 2 or 3; including the individual (R)- and (S)-enantiomers or mixtures of enantiomers thereof; and including pharmaceutically acceptable salts and esters thereof. The compounds have potentially valuable pharmaceutical properties for the treatment of cardiovascular disorders such as hypertension and chronic heart failure.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: April 25, 2017
    Assignee: BIAL-PORTELA & CA, S.A.
    Inventors: Patricio Manuel Vieira Araujo Soares Da Silva, David Alexander Learmonth, Alexander Beliaev