Patents by Inventor Alan K. Wilson

Alan K. Wilson 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).

  • Process for making fibrillated cellulose acetate staple fibers
    Patent number: 5779736
    Abstract: The present invention discloses a process for producing a fibrillated cellulose acetate fiber comprising contacting cellulose acetate fiber with a strong base solution at conditions sufficient to remove greater than about 5% of bulk acetyl groups from said cellulose acetate fiber. Modified cellulose acetate staple fiber comprising an outer layer of regenerated cellulose in which at least about 5% of the acetyl groups are removed on an overall fiber basis are also disclosed. Paper products incorporating said fibers are also disclosed.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: July 14, 1998
    Assignee: Eastman Chemical Company
    Inventors: Tim J. Frederick, Melvin G. Mitchell, Lee R. Partin, Alan K. Wilson, Richard D. Neal
  • Controlled release matrix system using cellulose acetate/poly-2-ethyl-2-oxazoline blends
    Patent number: 5536505
    Abstract: This invention relates to a controlled release matrix system comprising a homogenous mixture of poly-2-ethyl-2-oxazoline, cellulose acetate having a degree of substitution for acetyl of from about 0.5 to 3.0, and a water-soluble active ingredient.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: July 16, 1996
    Assignee: Eastman Chemical Company
    Inventors: Alan K. Wilson, Jessica Posey-Dowty, Stephen S. Kelley
  • Controlled release matrix system using cellulose acetate/polyvinylpyrrolidone blends
    Patent number: 5523095
    Abstract: This invention relates to a controlled release matrix system comprising a homogenous mixture of polyvinylpyrrolidone, cellulose acetate having a degree of substitution for acetyl of from about 0.5 to 3.0, and a water-soluble active ingredient.
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: June 4, 1996
    Assignee: Eastman Chemical Company
    Inventors: Alan K. Wilson, Jessica Posey-Dowty, Stephen S. Kelley
  • Preparation of cellulose diacetate by recycling processed film
    Patent number: 5214137
    Abstract: A one step process for preparing cellulose diacetates from processed film having cellulose triacetate as a base. The process involves use of an organic acid such as acetic acid and a solvolysis agent such as an alkanol or water. Hydrogen and a hydrogenation catalyst are optionally employed. The process allows for a simple way of recycling a material that presently is not recycled to any appreciable extent.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: May 25, 1993
    Assignee: Eastman Kodak Company
    Inventors: Alan K. Wilson, Fred D. Barlow, Jr.
  • Cellulose ester compositions and process for the preparation thereof
    Patent number: 5142034
    Abstract: Process for reducing the degree of substitution of cellulose esters employing Lewis acids as solvolysis promoters is disclosed. Novel low degree of substitution cellulose esters produced by the invention process are also described.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: August 25, 1992
    Assignee: Eastman Kodak Company
    Inventors: Michael Bellas, Charles M. Buchanan, Kevin J. Edgar, Ted C. Germroth, Alan K. Wilson
  • Preparation of aryl 1-hydroxyaryl-2-carboxylates
    Patent number: 4454340
    Abstract: Disclosed is a process for the preparation of aryl 1-hydroxyaryl-2-carboxylates by the reaction of certain phenolic compounds with an aryl chloroformate in the presence of aluminum chloride and an organic solvent.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: June 12, 1984
    Assignee: Eastman Kodak Company
    Inventors: Stephen N. Falling, Alan K. Wilson