Patents by Inventor Hartmut Schenkluhn

Hartmut Schenkluhn 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 production of pyridines from alkynes and nitriles
    Patent number: 4006149
    Abstract: In the production of pyridines by the reaction of alkynes and nitriles in the presence of a cobalt-containing catalyst, special catalysts have been found to give high yields. The catalyst can be a cobalt-(I) complex compound of the type cyclooctenyl-cobalt(I)-cyclooctadiene, methyl heptadienyl-cobalt(I)-butadiene and cyclopentadienyl-cobalt(I)-cyclooctadiene, or it can be formed in situ by reducing a di- or tri-valent cobalt salt with zinc, cadmium, a metal of the main groups I to III of the Periodic Table or with an organometallic compound of any of the foregoing.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: February 1, 1977
    Assignee: Studiengesellschaft Kohle M.b.H.
    Inventors: Helmut Bonnemann, Hartmut Schenkluhn