Patents by Inventor Donald L. O'Brien

Donald L. O'Brien 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).

  • Coating compositions for retrospective identification of articles
    Patent number: 4329393
    Abstract: Coating compositions containing identifier particles are disclosed for the retrospective identification of articles. The compositions comprise a clear lacquer binder, visually-readable microparticles and reflective spotting particles. The reflective spotting particles facilitate location of the coating on the surface of the tagged article.
    Type: Grant
    Filed: May 21, 1980
    Date of Patent: May 11, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James D. LaPerre, Donald L. O'Brien