Patents by Inventor Agusti Cerdà Baro

Agusti Cerdà Baro 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).

  • Method for the preparation of lactic acid and calcium sulphate dihydrate
    Patent number: 6632966
    Abstract: The invention relates to a method for the preparation of lactic acid and calcium sulphate, in which (a) an aqueous solution that contains lactate is reacted with sulphuric acid at a temperature that is essentially higher than the transition temperature of calcium sulphate dihydrate (CaSO4.2H2O), with the formation of a mixture that contains calcium sulphate hemihydrate and lactic acid, (b) the mixture from step (a) is subjected to at least one recrystallization step at a temperature that is essentially lower than the transition temperature of calcium sulphate dihydrate, with the formation of a precipitate of calcium sulphate dihydrate and an aqueous solution of lactic acid, and (c) the precipitate of calcium sulphate dihydrate is separated off from the aqueous solution of lactic acid.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: October 14, 2003
    Assignee: Purac Biochem B.V.
    Inventors: Markus Gerkema, Aldwin Korevaar, Damien Michel Andre Camelot, Jan Van Breugel, Geert-Jan Witkamp, Agusti Cerdà Baro
  • Method of industrial-scale purification of lactic acid
    Patent number: 6630603
    Abstract: The present invention relates to a method of industrial-scale purification of lactic acid, the method including the steps of: (a) reduced-pressure distillation of a concentrated lactic acid solution having a total acid content of at least 95 wt % and a content of monomeric lactic acid of at least 80 wt %, based on the concentrated lactic acid solution, the ratio between the lactic acid enantiomers in the concentrated lactic acid solution not being equal to 1; and (b) subjecting the concentrated lactic acid solution to a crystallization to form a pure lactic acid. The invention also relates to the lactic acid or the lactic acid solution obtained via this method, and the use thereof.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: October 7, 2003
    Assignee: Purac Biochem B.V.
    Inventors: Jan Van Breugel, Jan Van Krieken, Agusti Cerda Baró, José Maria Vidal Lancis, Margarita Camprubi Vila
  • Method for the preparation of lactic acid and calcium sulphate dihydrate
    Publication number: 20030125581
    Abstract: The invention relates to a method for the preparation of lactic acid and calcium sulphate, in which (a) an aqueous solution that contains lactate is reacted with sulphuric acid at a temperature that is essentially higher than the transition temperature of calcium sulphate dihydrate (CaSO4.2H2O), with the formation of a mixture that contains calcium sulphate hemihydrate and lactic acid, (b) the mixture from step (a) is subjected to at least one recrystallisation step at a temperature that is essentially lower than the transition temperature of calcium sulphate dihydrate, with the formation of a precipitate of calcium sulphate dihydrate and an aqueous solution of lactic acid, and (c) the precipitate of calcium sulphate dihydrate is separated off from the aqueous solution of lactic acid.
    Type: Application
    Filed: August 29, 2002
    Publication date: July 3, 2003
    Inventors: Markus Gerkema, Aldwin Korevaar, Damien Michel Andre Camelot, Jan Van Breugel, Geert-Jan Witkamp, Agusti Cerda Baro