Patents by Inventor Richard S. Turk

Richard S. Turk 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).

  • Patent number: 5766636
    Abstract: Edible, low calorie compositions contain, in addition to an active ingredient, such as flavoring agents, sweetening agents, therapeutic agents, cosmetic agents and luminescent agents, a gel or glass carrier which is the amorphous reaction product of a basic amino acid, a carboxylic acid, a source of metallic ions and water. Methods of making the compositions are disclosed.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: June 16, 1998
    Assignees: Natura, Inc., Biotechnology Institute
    Inventors: Richard S. Turk, Joel I. Dulebohn, James W. Stitley, Jr.
  • Patent number: 5618467
    Abstract: The present invention relates to luminescent materials, phosphors, and compositions containing phosphors and methods of their use. More particularly, it relates to organic phosphors which are amino acid salts and methods of using those phosphors and compositions to make objects photo-luminescent.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: April 8, 1997
    Assignee: Michigan Biotechnology Institute
    Inventors: Richard S. Turk, Joel I. Dulebohn
  • Patent number: 4215995
    Abstract: Test means, method for making same and method for assaying the urea content of fluids such as blood serum, plasma, urine and spinal fluid are disclosed. The preferred method for making the test means involves a three stage application of reagents separated from each other on an acid modified carrier matrix. One reagent is o-phthalaldehyde and the other reagent is 3-hydroxy-1,2,3,4-tetrahydrobenzo[h] quinoline, 3-acetoxy-1,2,3,4-tetrahydrobenzo[h]quinoline or their dihydrochloride salts. Stability of the reagents is achieved and precipitation of serum proteins is avoided. Moreover, the interfering color due to the presence of bilirubin is minimized when the urea content of serum is determined.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: August 5, 1980
    Assignee: Miles Laboratories, Inc.
    Inventors: Richard S. Turk, Adam P. Zipp