Patents by Inventor Brent D. Douty

Brent D. Douty 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).

  • Compositions of alkylbenzenes for visualization of the gastrointestinal tract using X-ray contrast
    Patent number: 5308607
    Abstract: Disclosed are contrast agents of the formula ##STR1## contained in aqueous compositions and methods for their use in diagnostic radiology of the gastrointestinal tract whereinR=C.sub.1 -C.sub.25 alkyl, cycloalkyl, unsaturated allyl or halo-lower-alkyl, optionally substituted with halo, fluoro-lower-alkyl, aryl, lower-alkoxy, hydroxy, carboxy, lower-alkoxy carbonyl or lower-alkoxy-carbonyloxy, (CR.sub.1 R.sub.2).sub.p --(CR.sub.3 .dbd.CR.sub.4).sub.m Q, or (CR.sub.1 R.sub.2).sub.p --C.tbd.C--Q;R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently H, lower-alkyl, optionally substituted with halo;n is 1-5;m is 1-5;p is 1-10; andQ is H, lower-alkyl, lower-alkenyl, lower-alkynyl, lower-alkylene, aryl, or aryl-lower alkyl.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: May 3, 1994
    Assignee: Sterling Winthrop Inc.
    Inventors: Kurt A. Josef, Edward R. Bacon, Kimberly G. Estep, Carl R. Illig, Brent D. Douty