Patents by Inventor Charles E. Bender

Charles E. Bender 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: 4539315
    Abstract: An analgesic aspirin composition in dosage form having acetylsalicylic acid and unreacted glycine in an amount equal to at least approximately 33.3% of the weight of the acetylsalicylic acid for rendering the aspirin nontoxic upon swallowing the aspirin composition, as well as rendering the aspirin sublingually absorbable.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: September 3, 1985
    Assignee: Dynatech Laboratories, Incorporated
    Inventors: Charles E. Bender, deceased, Audrey L. Bender, executrix
  • Patent number: 4162855
    Abstract: A lightweight magnetic stirrer apparatus which may be positioned for rotation in a fluid containing vessel, having a magnetic rotor assembly including a generally vertical center hub on which is mounted a generally horizontal magnetic impeller. The rotor assembly is rotatably mounted in a positioning cage which generally positions the rotor assembly within the vessel and prevents it from contacting the walls of the vessel to allow the rotor assembly hub to rotate free relative to the vessel in the cage under the influence of an exterior magnetic drive. The magnetic stirrer apparatus is also provided with a cage in which the legs are totally removeable so as to make it any size for different beakers. Furthermore, the magnet may be removed completely from the cage so that it may be dropped into the neck of a bottle and the magnet per se used by itself. High lubricity bearing surfaces of the hub and cage reduce frictional forces and allow rotation of the impeller at very low speeds.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: July 31, 1979
    Assignee: Spectroderm International, Inc.
    Inventor: Charles E. Bender
  • Patent number: 4024648
    Abstract: A safety flask for freeze drying being formed of chemically-resistant and shock-resistant materials, including a container flask, a cover assembly and a tube removably inserted through the cover assembly so as to be in communication with the interior of the container flask for connection to a vacuum source. Sealing means is mounted in the cover assembly to provide a fluid-tight seal between the tube and the cover assembly. A filter is removably mounted on the cover assembly over the point of communication of the tube with the container flask to prevent cross-contamination between samples and to prevent the sample from being withdrawn by the vacuum. A vacuum release device is mounted on the tube to permit easy removal of the flask.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: May 24, 1977
    Inventor: Charles E. Bender
  • Patent number: D337882
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: August 3, 1993
    Inventors: Charles E. Bender, Sandra L. Reagan