Patents by Inventor Stefano Alini

Stefano Alini 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).

  • PURIFICATION OF ALIPHATIC DICARBOXYLIC ACIDS PRODUCED BY BIOTECHNOLOGICAL PROCESSES
    Publication number: 20230257336
    Abstract: A process for the purification of saturated linear aliphatic dicarboxylic acids, or mixtures thereof, obtained by biotechnological processes is described.
    Type: Application
    Filed: July 14, 2021
    Publication date: August 17, 2023
    Applicant: RADICI CHIMICA S.P.A.
    Inventors: Cristiano MAESANI, Pasquale ACCORINTI, Stefano ALINI
  • Process for the production of hexamethlenediamine
    Patent number: 9446373
    Abstract: It is described a process for the production of hexamethylenediamine by hydrogenation of adiponitrile, comprising an improved step of regeneration of the catalyst. Also described are an equipment for the production of hexamethylenediamine, and a washing apparatus (14) for implementing the catalyst regeneration step.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: September 20, 2016
    Assignee: Radici Chimica S.p.A.
    Inventors: Tommaso Crippa, Stefano Alini, Luciano Guida, Alberto Corona
  • PROCESS FOR THE PRODUCTION OF HEXAMETHLENEDIAMINE
    Publication number: 20150093301
    Abstract: It is described a process for the production of hexamethylenediamine by hydrogenation of adiponitrile, comprising an improved step of regeneration of the catalyst. Also described are an equipment for the production of hexamethylenediamine, and a washing apparatus (14) for implementing the catalyst regeneration step.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Inventors: Tommaso Crippa, Stefano Alini, Luciano Guida, Alberto Corona
  • Process for the production of hexamethlenediamine
    Patent number: 8933272
    Abstract: It is described a process for the production of hexamethylenediamine by hydrogenation of adiponitrile, comprising an improved step of regeneration of the catalyst. Also described are an equipment for the production of hexamethylenediamine, and a washing apparatus (14) for implementing the catalyst regeneration step.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: January 13, 2015
    Assignee: Radici Chimica S.p.A.
    Inventors: Tommaso Crippa, Stefano Alini, Luciano Guida, Alberto Corona
  • PROCESS FOR THE PRODUCTION OF HEXAMETHLENEDIAMINE
    Publication number: 20140024859
    Abstract: It is described a process for the production of hexamethylenediamine by hydrogenation of adiponitrile, comprising an improved step of regeneration of the catalyst. Also described are an equipment for the production of hexamethylenediamine, and a washing apparatus (14) for implementing the catalyst regeneration step.
    Type: Application
    Filed: April 15, 2011
    Publication date: January 23, 2014
    Applicant: Radici Chimica S.p.A.
    Inventors: Tommaso Crippa, Stefano Alini, Luciano Guida, Alberto Corona
  • Method for preparing coumarin and derivatives thereof
    Patent number: 5872265
    Abstract: A process for producing coumarin and substituted coumarins starting from substituted hexahydrocoumarins or from substituted dihydrocoumarins. The process includes dehydrogenation in the presence of catalysts based on metals of Group VIII of the periodic table of the elements and in the presence of at least one easily reducible organic compound. The invention allows to achieve exceptionally high yields that do not require the recycling of the hexahydrocoumarin or of the dihydrocoumarin that are present at the end of the reaction, and also allows to achieve high selectivity and easy purification.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: February 16, 1999
    Assignee: Industrie Chimiche Caffaro S.P.A.
    Inventors: Stefano Alini, Livius Cotarca, Pietro Delogu