Patents by Inventor Henricus Wilhemus Leonardus Marie Vaessen

Henricus Wilhemus Leonardus Marie Vaessen 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 to produce valerolactone from levulinic acid
    Patent number: 8598303
    Abstract: The invention provides a process for the preparation of valerolactone, said process comprising reacting levulinic acid with hydrogen by using a solid Ru catalyst, characterized in that the process is carried out in the presence of at least 0.08% (w/w) water relative to the amount of levulinic acid. Said process may be faster and more selective. This process advantageously allows the production of valerolactone from renewable sources. The valerolactone may be used in the preparation of methylpentenoate, adipic acid dimethylester, adipic acid, hexamethylenediamine, and polyamide 6,6 (all claimed).
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 3, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Anna Maria Cornelia Francisca Castelijns, Michele Catherine Christianne Janssen, Henricus Wilhemus Leonardus Marie Vaessen
  • PROCESS TO PRODUCE VALEROLACTONE FROM LEVULINIC ACID
    Publication number: 20120329981
    Abstract: The invention provides a process for the preparation of valerolactone, said process comprising reacting levulinic acid with hydrogen by using a solid Ru catalyst, characterised in that the process is carried out in the presence of at least 0.08% (w/w) water relative to the amount of levulinic acid. Said process may be faster and more selective. This process advantageously allows the production of valerolactone from renewable sources. The valerolactone may be used in the preparation of methylpentenoate, adipic acid dimethylester, adipic acid, hexamethylenediamine, and polyamide 6,6 (all claimed).
    Type: Application
    Filed: June 20, 2012
    Publication date: December 27, 2012
    Applicant: DSM IP ASSETS B.V.
    Inventors: Anna Maria Cornelia Francisca Castelijns, Michele Catherine Christianne Janssen, Henricus Wilhemus Leonardus Marie Vaessen