The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1982
Filed:
Nov. 09, 1979
James A Nelson, Salt Lake City, UT (US);
James A Sorenson, Salt Lake City, UT (US);
University of Utah, Salt Lake City, UT (US);
Abstract
A first x-ray film is made of an object which is of the type where the image on the film has underexposed portions with low optical contrast. An optical mask film is made from the first x-ray film by transferring the image of the object from the first x-ray film onto a photographically positive print film with duplicating means and an optical blurring means to produce an optically blurred positive image reflective of the object with exposed portions related to the underexposed portions of the first x-ray film. A second x-ray film is made of the object with the optical mask film positioned and registered with respect to the second x-ray film and with respect to the image reflective of the object to be formed on the second x-ray film by the x-ray means, to produce an optically masked image reflective of the object with the underexposed portions of the first x-ray film on the second x-ray film more exposed and with higher optical contrast with respect to the first x-ray film.