Patents by Inventor Bjorn N. deBough

Bjorn N. deBough 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).

  • Asphalt emulsion and manufacture thereof
    Patent number: 4056401
    Abstract: A method for preparing an asphalt emulsion having the smooth texture of whipped cream and which may be cold laid on wet wood and concrete surfaces to dry without blistering. Asphalt is heated to a temperature within the range from about 375.degree. F. to about 400.degree. F. and subsequently rapidly admixed with an aqueous slurry of hydrophilic clay in a manner and in proportions which achieve heat transfer from asphalt to clay slurry without excessive water evaporation to provide the desired emulsification.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: November 1, 1977
    Inventor: Bjorn N. DeBough
  • Circuit having audio output pulse rate related to measured resistance and output pulse modulation related to measured capacitance
    Patent number: 3936735
    Abstract: System for monitoring the resistance and capacitance between sense electrodes in a volume of material and providing audio pulses having a frequency which is a function of the resistance between the probes and pulse modulation which is a function of the capacitance between the probes.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: February 3, 1976
    Inventor: Bjorn N. deBough