Patents by Inventor Christopher S. Allen

Christopher S. 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).

  • In-flow acoustic sensor
    Patent number: 5477506
    Abstract: An acoustic sensor for measuring acoustic waves contained in fluid flow flowing over the sensor. The acoustic sensor reduces any unwanted self-noise associated with the flowing fluid by providing a nose cone having proper aerodynamic properties and by positioning the diaphragm of a microphone of the sensor at a location where any unwanted noise is at a relatively low level. The nose cone has a rounded, blunt or even sharp tip neither of which creates any major disturbances in the flowing fluid which it intercepts.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 19, 1995
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Christopher S. Allen
  • Stabilization of chlorinated aliphatic hydrocarbons
    Patent number: 4287003
    Abstract: Trichloroethylene, perchloroethylene or methylene dichloride is stabilized with an epoxy alkyl ester which is derived from a carboxylic acid containing from 5 to 22 carbon atoms and from an alcohol containing from 3 to 12 carbon atoms.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: September 1, 1981
    Assignee: Imperial Chemical Industries Limited
    Inventor: Christopher S. Allen
  • Stabilization of 1,1,1-trichloroethane compositions against metal-induced decomposition with a polyalkylene glycol monoalkyl ether
    Patent number: 4189397
    Abstract: 1,1,1-trichloroethane is stabilised against metal-induced decomposition by incorporating a polyalkylene glycol monoalkyl ether.
    Type: Grant
    Filed: December 15, 1977
    Date of Patent: February 19, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventor: Christopher S. Allen