Patents by Inventor Johannes C. M. van der Arend

Johannes C. M. van der Arend 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).

  • Process for production of alkadiene-based polymer of increased vinyl content
    Patent number: 5194535
    Abstract: An improved process for the production of conjugated alkadiene-based polymers of higher vinyl content employs as a structure modifier a compound of the formula ##STR1## wherein R is alkylene, R' alkyl and R" is hydrogen or hydrocarbyl.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: March 16, 1993
    Assignee: Shell Oil Company
    Inventors: Margaretha J. C. M. Koppes, Johannes C. M. van der Arend