Patents by Inventor Paul Kehler

Paul Kehler 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).

  • Publication number: 20030033124
    Abstract: This invention deals with two novel photon interaction coefficients, the dose deposition coefficient and the shielding coefficient, which are function of not only the photon energy and the Z-number of the shielding material, but also of the thickness of the shielding material. These coefficients consider the energy degradation of photons as they pass through matter, and allow for calculations of the dose deposited in internal organs and in shielded objects, as well as for accurate shielding calculations without use of the common dose buildup factor.
    Type: Application
    Filed: August 9, 2002
    Publication date: February 13, 2003
    Inventor: Paul Kehler
  • Patent number: 3942004
    Abstract: A dual spaced neutron well logging instrument and method utilizing a pair of alternately operated neutron sources and a pair of detectors, said dual spaced neutron well logging instrument being able to measure the porosity of earth formations penetrated by a borehole substantially independent of the thickness and the chemical composition of the mudcake, the cement liner, the well casing, the drilling mud and the diameter of the borehole.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: March 2, 1976
    Assignee: Applied Inventions Corporation
    Inventor: Paul Kehler
  • Patent number: 3937288
    Abstract: A power driven vehicle having a set of wheels mounted along each of its sides and having endless tracks suspended between the two sets of wheels in an arrangement that substantially covers the whole underside of the vehicle and thereby renders the vehicle bellyless, said endless tracks being individually powered and engaging with the ground whenever the wheels mounted along the sides of the vehicle sink into the ground to a predetermined depth.
    Type: Grant
    Filed: March 6, 1974
    Date of Patent: February 10, 1976
    Assignee: Applied Inventions Corporation
    Inventor: Paul Kehler