Patents by Inventor Paul C. Litzinger

Paul C. Litzinger 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).

  • Novel aggregate composition and method for making same
    Patent number: 4311115
    Abstract: A novel aggregate composition is provided comprising (a) pulp mill solid waste material, and (b) partially pyrolyzed cellulosic residue, as well as a method for making same. The subject aggregate composition exhibits a high degree of water absorbency and odor absorbency, respectively, and is adapted for use as an animal litter product. The method includes the steps of forming an aqueous slurry of components (a) and (b), compressing the slurry to form a wet aggregate product, and then drying same to produce the above composition.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 19, 1982
    Assignee: Crown Zellerbach Corporation
    Inventor: Paul C. Litzinger
  • Process for making fibers
    Patent number: 4054625
    Abstract: A process of manufacturing fibers by forming a mixture of a solvent, a polymer and water and flashing the mixture through a nozzle. Water is present as a discontinuous phase in the mixture. The polymer may be any polymer capable of forming fiber, preferably a crystalline or a partially crystalline polymer. The preferred polymers are crystalline or partially crystalline polyolefins, preferably polyethylene or polypropylene. The discrete fibers thus formed can be easily refined and used for making paper webs.
    Type: Grant
    Filed: August 27, 1973
    Date of Patent: October 18, 1977
    Assignee: Crown Zellerbach Corporation
    Inventors: John H. Kozlowski, Paul C. Litzinger, Frank J. Steffes
  • Production of discrete cellulose acetate fibers by emulsion flashing
    Patent number: 4040856
    Abstract: Discrete cellulose acetate fibers are produced by flashing an emulsion of cellulose acetate, water, and a solvent which is miscible with the water at the temperature at which the emulsion is flashed. The fibers can be used directly to make paper in accordance with conventional papermaking methods.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: August 9, 1977
    Assignee: Crown Zellerbach Corporation
    Inventor: Paul C. Litzinger