Patents by Inventor Earl G. McNall

Earl G. McNall 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).

  • Patent number: 3955282
    Abstract: An orthodontic method, dental composition, and apparatus are provided which permit the direct bonding of orthodontic brackets to teeth. In particular, a method has been devised whereby the tooth, following phosphoric acid etching, is treated sequentially with a primer, and a sealant which contains a catalyst, and a pre-mixed dental adhesive which permits the attachment of orthodontic brackets to teeth. More particularly, this invention permits the direct bonding of stainless steel attachments to teeth taking advantage of a low profile in the design of the bracket base method of attaching the bracket to the tooth which is curved to fit the individual tooth. Virtually any type of bracket may be welded onto this base and orthodontic treatment can proceed with greater patient comfort and convenience.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: May 11, 1976
    Inventor: Earl G. McNall