Patents by Inventor John W. Eberlin

John W. Eberlin 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).

  • Method for sizing paper
    Patent number: 5271806
    Abstract: A method for sizing paper to improve resistance to wetting by liquids under hard water conditions is provided. The method comprises (a) contacting paper sheet material with a hydrocarbon surfactant free, substantially organic solvent free aqueous solution of an N-alkyl fluoroaliphaticsulfonamidoalkyl phosphate salt in hard water, said phosphate salt forming substantially no precipitate and (b) drying said sheet material or (a) adding to a paper pulp slurry in hard water, a hydrocarbon surfactant free, substantially organic solvent free aqueous solution of an N-alkyl fluoroaliphaticsulfonamidoalkyl phosphate salt, said phosphate salt forming substantially no precipitate, (b) forming said slurry into paper and (c) drying said paper.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: December 21, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert F. Deutsch, John W. Eberlin, Robert F. Kamrath
  • Process for benz[f]-2,5-oxazocines
    Patent number: 3978085
    Abstract: An improved process is described for the preparation of 5-lower alkyl-1-phenyl-1,3,4,6-tetrahydro-5H-benz[f]-2,5-oxazocines in which 2-(N-hydroxyethyl=N=lower alkylaminomethyl)-benzhydrols are cyclized in the presence of aqueous hydrogen halide.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: August 31, 1976
    Assignee: Riker Laboratories, Inc.
    Inventor: John W. Eberlin