Patents by Inventor Charles L. Hall

Charles L. Hall 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).

  • Medical component insertion device including a retractable needle
    Patent number: 11931534
    Abstract: A medical insertion device includes an introducer assembly, a needle, and a housing. The introducer assembly includes a dilator coaxially disposed in a sheath, the dilator removably engaged to the sheath in an insertion configuration. The needle is coaxially disposed in the dilator, the needle having a distal tip and a proximal end coupled to a needle hub. The housing may be removably engaged to the dilator. The needle hub is movably disposed in the housing between a first locked position, a second locked position, and a third locked position.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: March 19, 2024
    Assignee: C. R. Bard, Inc.
    Inventors: John W. Hall, Ryan C. Patterson, Charles L Farnworth
  • Safety razor
    Patent number: 3949470
    Abstract: In a safety razor a relatively permanent portion of the razor blade holder structure has a cutting edge formed thereon disposed to track with the cutting edge of the replaceable razor blade. In this manner the second cutting edge simultaneously tracks behind the first in cutting relation to cut whiskers missed by the first cutting edge.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: April 13, 1976
    Inventor: Charles L. Hall