Patents by Inventor Peter Ruckstuhl

Peter Ruckstuhl 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).

  • CATALYTIC ETHYNYLATION
    Publication number: 20210261488
    Abstract: The present invention relates to the catalytic ethynlation of ??-unsaturated ketones for producing tertiary acetylenic alcohols.
    Type: Application
    Filed: July 29, 2019
    Publication date: August 26, 2021
    Inventors: Fabrice AQUINO, Werner BONRATH, Francesco PACE, Peter RUCKSTUHL, Konrad WITZGALL
  • Process for the working-up of a vitamin E- and vitamin E-acetate-containing mixture or product stream
    Patent number: 8414850
    Abstract: A rectification column and system for the working-up of a vitamin E (VE)- and/or vitamin E acetate (VEA)-containing product stream includes purification of a vitamin E-containing product stream, acetylation of at least a part of the purified vitamin E and purification of at least a part of the acetylated vitamin E, the purification of vitamin E and vitamin E acetate preferably being effected by distillation, for example rectification.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: April 9, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Werner Pietzonka, Peter Ruckstuhl, Angela Wildermann
  • PROCESS FOR THE WORKING-UP OF A VITAMIN E- AND VITAMIN E-ACETATE-CONTAINING MIXTURE OR PRODUCT STREAM
    Publication number: 20120156107
    Abstract: A rectification column and system for the working-up of a vitamin E (VE)- and/or vitamin E acetate (VEA)-containing product stream includes purification of a vitamin E-containing product stream, acetylation of at least a part of the purified vitamin E and purification of at least a part of the acetylated vitamin E, the purification of vitamin E and vitamin E acetate preferably being effected by distillation, for example rectification.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 21, 2012
    Applicant: DSM IP ASSETS B.V.,
    Inventors: Werner PIETZONKA, Peter RUCKSTUHL, Angela WILDERMANN
  • Process for the working-up of a vitamin E- and vitamin E-acetate- containing mixture or products stream
    Patent number: 8183396
    Abstract: The invention relates to a process for the working-up of a vitamin E (VE)- and/or vitamin E acetate (VEA)-containing product stream, which is substantially characterized by purification of a vitamin E-containing product stream, acetylation of at least a part of the purified vitamin E and purification of at least a part of the acetylated vitamin E, the purification of vitamin E and vitamin E acetate preferably being effected by distillation, for example rectification.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: May 22, 2012
    Assignee: DSM IP Assets B.V.
    Inventors: Werner Pietzonka, Peter Ruckstuhl, Angela Wildermann
  • Process for the working-up of a vitamin E- and vitamin E-acetate- containing mixture or products stream
    Publication number: 20090287002
    Abstract: The invention relates to a process for the working-up of a vitamin E (VE)- and/or vitamin E acetate (VEA)-containing product stream, which is substantially characterized by purification of a vitamin E-containing product stream, acetylation of at least a part of the purified vitamin E and purification of at least a part of the acetylated vitamin E, the purification of vitamin E and vitamin E acetate preferably being effected by distillation, for example rectification.
    Type: Application
    Filed: August 19, 2005
    Publication date: November 19, 2009
    Inventors: Werner Pietzonka, Peter Ruckstuhl, Angela Wildermann