Patents by Inventor Christiaan F. Wijnman

Christiaan F. Wijnman 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).

  • Method of preparing lacitol monohydrate and dihydrate
    Patent number: 5726303
    Abstract: The invention relates to the new product lactitol monohydrate and to a method for the production of crystalline lactitol. The crystalline lactitol monohydrate can be obtained bij seeding an aqueous lactitol solution of a special concentration under special conditions causing the lactitol monohydrate to crystallize and recovering the product. From the mother liquor a further amount of lactitol dihydrate can be recovered. Crystalline lactitol dihydrate can be obtained using different special conditions. Lactitolmonohydrate can further be obtained by mixing one part bij weight of an aqueous lactitol solution of a suited concentration with 1 tot 3 parts bij weight of methanol or ethanol and cooling the mixture to 15.degree. tot 25.degree. C.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: March 10, 1998
    Assignee: C.V. Chemie Combinatie Amsterdam C.C.A.
    Inventors: Christiaan F. Wijnman, John A. van Velthuijsen, Hendrik van den Berg