Patents by Inventor Daniel L. Rathbun

Daniel L. Rathbun 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).

  • Tamperproof capsule
    Patent number: 4534467
    Abstract: A self-locking, tamperproof capsule comprising hard gelatin body and cap members having essentially cylindrical sidewalls that telescopically engage to form the capsule, wherein the annular side of the telescopically engaged cylindrical surfaces contain a plurality of concentric saw-toothed protrusions that allow the filled capsule body and cap to be assembled, but prevents subsequent disassembly.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: August 13, 1985
    Inventor: Daniel L. Rathbun