Patents by Inventor Milo C. Pass

Milo C. Pass 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).

  • Coupled secondary oxo reaction system
    Patent number: 5367106
    Abstract: In a primary process for hydroformylating olefins in the presence of a rhodium-containing catalyst solution to produce aldehydes and a gaseous effluent comprising unreacted olefin is vented, the improvement which comprises employing the effluent as a reactant feed for a coupled secondary hydroformylation process conducted jointly therewith in which the catalyst solution is cycled back and forth between the primary and secondary hydroformylation processes.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: November 22, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Jerry D. Unruh, Wendell L. Pieper, Milo C. Pass
  • Production of sulfonated amines
    Patent number: 4808342
    Abstract: A process for the preparation of sulfonated aromatic amines is disclosed based upon starting with the corresponding amine reacted with sulfuric acid in the presence of a sufficient excess of sulfuric acid to act as the reaction solvent. The sulfuric acid excess in the case of sulfanilic acid, the most common of these sulfonated amines and exemplified herein is an aniline:sulfuric acid ratio in the range 1:2.0 to 1:2.5. The reaction, with recycling of the excess acid, provides substantially 100% yield of high quality sulfonated aromatic amine with effectively no effluent but the product.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: February 28, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Richard B. Lund, Milo C. Pass