Patents by Inventor Wei Te Lin

Wei Te Lin 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).

  • Preparation of a high purity and high concentration hydroxylamine free base
    Patent number: 7396519
    Abstract: A high purity aqueous solution of hydroxylamine product is prepared by treating an aqueous solution of hydroxylammonium salt with a base like ammonia at low temperatures. A novel process can be carried out by separating the ammonium salt side product from hydroxylamine with a low temperature filtration and a resin-exchange process. The concentration of the hydroxylamine product is further improved by a safe distillation process that produces a high purity and high concentration hydroxylamine product with reduced risks of explosion.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: July 8, 2008
    Assignee: San Fu Chemical Company, Ltd.
    Inventors: Kaung-Far Lin, Jin-Fu Chen, Wei Te Lin, Ruey-Shing Chen, Kung-Chin Kuo