Patents by Inventor Angus Watson

Angus Watson 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).

  • Acid copper electroplating baths containing brightening and leveling additives
    Patent number: 4376685
    Abstract: The invention is concerned with the electrodeposition of copper from an aqueous acidic bath containing the following additives:a. An alkylated polyalkyleneimine obtained as the reaction product of a polyalkyleneimine represented by the formula :H.sub.2 N--(CH.sub.2).sub.n NH--Rwherein R is H or (CH.sub.2).sub.n NH.sub.2 and n=1 to 6 with an epihalohydrin and an alkylating agent; an organic sulfo sulfonate; a polyether; and optionally a thioorganic compound.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: March 15, 1983
    Assignee: M&T Chemicals Inc.
    Inventor: Angus Watson