Patents by Inventor Harry Allen

Harry Allen 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: 4016267
    Abstract: N.sup.1 -(1,2-dihydro-2-oxo-4-pyrimidinyl)sulfanilamides, bearing a lower alkyl, cycloalkyl or cycloalkyl-lower alkyl substituent in the 1-position, prepared by reaction of the corresponding 1-substituted-1,2-dihydro-2-oxo-4-aminopyrimidine and N-acylated sulfanilyl chloride with subsequent hydrolysis, are described. The end products are useful as antibacterial agents.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: April 5, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Harry Allen Albrecht, John Thomas Plati
  • Patent number: 3991746
    Abstract: A patient monitoring system made of an enclosing cover of electrically insulating and waterproof material encloses two conductive foils separated by an insulating sheet. The upper foil, the one adjacent the patient, is connected to a circuit that applies a carrier frequency signal to the upper foil and uses the lower foil as an electrical shield. An amplifying circuit receives the carrier signal as it is modulated by the movements of a patient adjacent the upper foil and produces an amplified output. The amplified output is demodulated and interpreted by an output circuit that produces signals that monitor selected movements or body conditions of the patient.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: November 16, 1976
    Assignee: Medical R & D, Limited
    Inventor: Harry Allen Hanna
  • Patent number: 3938744
    Abstract: A progressing cavity, positive displacement rotary pump assembly for fluid or semi-fluid material. The assembly includes a rotary shaft with an associated drive motor and pump components including a tubular stator with an interior helical surface and an orbital rotor within the stator operably connected to the shaft and having an exterior helical surface. The helical rotor surface has one more thread than the helical stator surface which it engages, to define sealed pumping cavities that advance axially as the rotor rotates and orbits within the stator. The rotor is coupled to the shaft by a flexible torque tube with one end connected to the shaft and the other connected to an end of the rotor to transmit driving torque to the rotor and to flex sufficiently to accommodate orbital movement of the rotor.
    Type: Grant
    Filed: September 5, 1974
    Date of Patent: February 17, 1976
    Inventor: Clifford Harry Allen