Patents by Inventor Kamalaksha Das Gupta

Kamalaksha Das Gupta 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).

  • Surface channeled X-ray tube
    Patent number: 5257303
    Abstract: A beam generating apparatus the combination comprising a first binary alloy target crystal consisting essentially of an alloy of copper and silver, for producing a primary x-ray beam; a second target crystal consisting essentially of copper in the path of the first x-ray beam and oriented to produce a CuK.alpha., radiation in response to impingement of the primary beam.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: October 26, 1993
    Inventor: Kamalaksha Das Gupta
  • X-ray source with dual monocrystal targets
    Patent number: 4894852
    Abstract: A method of producing X-rays employs a first monocrystal having parallel lattice planes and an optically flat planar face extending at the Bragg angle .theta..sub.B or less than .theta..sub.B relative to said planes, and includes:(a) exciting the monocrystal at its face, and along a line thereon, and(b) impinging Kossel photons on that line at the slant cut crystal face, at an impingement angle of 2.theta..sub.B relative to that line,(c) whereby an intense Bragg reflected narrow width X-ray emission line occurs in a direction which is an extension of the line.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: January 16, 1990
    Inventor: Kamalaksha Das Gupta