Patents by Inventor Christer Bergst{umlaut over (r)}öm

Christer Bergst{umlaut over (r)}öm 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).

  • Alkylation process
    Patent number: 7030285
    Abstract: A side-chain of a substituted aromatic compound is alkylated by reacting the aromatic compound with an alkylating agent in the presence of a catalyst. The catalyst comprises a restructured smectite clay to which basic ions are incorporated by ion-exchange. The restructuring of the smectite clay is carried out by acid-treating the clay prior to ion-exchange.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: April 18, 2006
    Assignee: Optatech Corporation
    Inventors: Adriana De Stefanis, Giorgio Perez, Anthony Tomlinson, Christer Bergst{umlaut over (r)}öm