Patents by Inventor Frank H. Stevens

Frank H. Stevens 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).

  • Microemulsion useful as rinse aid
    Patent number: 5827451
    Abstract: Disclosed are isotropic oil-in-water microemulsions containing an oil component of a fatty acid, fatty alcohol, or ester thereof; a quaternary ammonium component; an ether component; and water. The microemulsions are useful to apply removable hydrophobic films to a surface, rendering them useful in e.g. carwashes.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: October 27, 1998
    Assignee: Witco Corporation
    Inventors: Wayne J. Cummings, Robert D. Pifer, Frank H. Stevens
  • Particulate emulsifiable hair conditioning composition
    Patent number: 4891214
    Abstract: The addition of up to 80 percent by weight of a fatty alcohol, and up to 10 percent by weight of a fatty alkylamido alkyldialkylamine to a quaternary ammonium compound, results in a particulate composition which, when stirred into warmed, slightly acidified water, almost immediately forms an emulsion. The emulsion thus produced overcomes many problems usually associated with the formulation of emulsions, and is suitable for use as a hair conditioner.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: January 2, 1990
    Assignee: Sherex Chemical Company, Inc.
    Inventors: Frank H. Stevens, Sheila E. Vetter
  • Fabric-conditioning composition for article used to condition fabrics in a clothes dryer
    Patent number: 4255484
    Abstract: A fabric-conditioning composition incorporated in an article used to condition fabrics in a laundry dryer. The fabric-conditioning composition carried on a sheet-like flexible substrate includes special fatty glyceride spreading agents to enhance uniform transfer of the conditioning agents to fabrics when tumbled therewith in a clothes dryer. The article is capable of effective conditioning fabrics without staining because of the spreading agents which aid in the uniform release of fabric-conditioners from the substrate at dryer operating temperatures, and aids in uniformly spreading the fabric-conditioners over the clothes being treated. The presently preferred fatty glyceride spreading agents comprise ethoxylated, propoxylated glycerol and mono- and diesters of hydrogenated tallow acids. These spreading agents are preferably used with a cationic quaternary ammonium fabric-conditioner, more particularly ditallow and dimethyl ammonium sulfate.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: March 10, 1981
    Assignee: A. E. Staley Manufacturing Company
    Inventor: Frank H. Stevens
  • Multiple use article for conditioning fabrics in a clothes dryer
    Patent number: 4170678
    Abstract: A multiple use article for conditioning of fabrics in a laundry dryer comprising an initially multiple-layer flexible substrate carrying a conditioning agent transferable to fabrics when tumbled therewith in a clothes dryer. The dryer operator modifies the shape of the multiple-layer flexible substrate between successive uses to expose additional fabric-conditioning agent for transfer to additional fabrics subsequently loaded in the clothes dryer.
    Type: Grant
    Filed: August 30, 1978
    Date of Patent: October 9, 1979
    Assignee: A. E. Staley Manufacturing Company
    Inventors: Allen D. Urfer, Frank H. Stevens