Patents by Inventor Gerd E. Wallin

Gerd E. Wallin 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).

  • Binder
    Patent number: 4357454
    Abstract: A lignin product-containing binder and a process for its production are described.The lignin product consists of chlorolignin which has been treated with strong alkali (NaOH) for preferably 0.5-3 h. at 50.degree.-100.degree. C. and a pH of 10-13.5. The alkali-treated chlorolignin product can be used on its own as a binder component or, preferably, together with phenol-formaldehyde. The weight ratio phenol/lignin product is suitably from 4:1 to 1:4.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: November 2, 1982
    Assignee: Eka AB
    Inventors: Krister Holmberg, Jan-Allan Y. Johansson, Gerd E. Wallin