Patents by Inventor Christina Walczuch

Christina Walczuch 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 1,4-butane diol having an APHA color index of less than 30
    Patent number: 9975829
    Abstract: Method for preparing 1,4-butanediol having an APHA color index of less than 30 by treating substance mixtures comprising 1,4-butanediol by distillation of the 1,4-butanediol in the presence of complex hydrides.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: May 22, 2018
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Olga Osetska, Irene de Wispelaere, Stefan Dudenhoeffer, Christina Walczuch
  • METHOD FOR THE PREPARATION OF 1,4-BUTANE DIOL HAVING AN APHA COLOR INDEX OF LESS THAN 30
    Publication number: 20160244387
    Abstract: Method for preparing 1,4-butanediol having an APHA color index of less than 30 by treating substance mixtures comprising 1,4-butanediol by distillation of the 1,4-butanediol in the presence of complex hydrides.
    Type: Application
    Filed: October 13, 2014
    Publication date: August 25, 2016
    Inventors: Rolf Pinkos, Olga Osetska, Irene de Wispelaere, Stefan Dudenhoeffer, Christina Walczuch