Patents by Inventor Rudi Kröner

Rudi Kröner 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).

  • Synthesis of 1-(2-sulfoethyl)-pyridinium betaine
    Patent number: 6403800
    Abstract: Described is a process for preparing 1-(2-sulfoethyl)pyridinium betaine wherein pyridine is reacted with a sulfoethylating agent from the group consisting of carbyl sulfate, ethionic acid and its salt and vinylsulfonic acid and vinylsulfonate, the reaction taking place in aqueous solution or in pyridine.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: June 11, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Elisabeth Kappes, Gregor Brodt, Rudi Kröner, Norbert Wagner, Sören Hildebrandt, Thomas Bogenstätter