Patents by Inventor Albert Leonard Haugse

Albert Leonard Haugse 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).

  • Polyurethane forming no-bake foundry binders
    Patent number: 6017978
    Abstract: This invention relates to a polyurethane no-bake foundry binder comprising (1) phenolic resin component which comprises (a) a phenolic resin, (b) hydrofluoric acid, and (c) a silane, and (2) an organic polyisocyanate component, and (3) a liquid tertiary amine catalyst component. The binders are used to prepare foundry mixes by mixing the binder with a foundry aggregate. Foundry shapes are prepared with the mixes by the no-bake process and are used to cast metal parts.
    Type: Grant
    Filed: February 28, 1998
    Date of Patent: January 25, 2000
    Assignee: Ashland Inc.
    Inventors: Chia-hung Chen, Ken K. Chang, Albert Leonard Haugse, Thomas E. Dando