Patents by Inventor A. Chandler Schmalz

A. Chandler Schmalz 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).

  • Cardable hydrophobic polyolefin fiber, material and method for preparation thereof
    Patent number: 5721048
    Abstract: An improved method for producing hydrophobic polyolefin-containing staple fiber for processing, with reduced waste and improved crimp by sequential treatment with two finish compositions comprising at least one neutralized phosphoric acid ester and at least one polysiloxane of defined classes and amounts.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: February 24, 1998
    Assignee: Fiberco, Inc.
    Inventor: A. Chandler Schmalz
  • Rewettable polyolefin fiber and corresponding nonwovens
    Patent number: 5045387
    Abstract: A method for imparting and retaining hydrophilicity and liquid strike-through properties within an essentially hydrophobic polyolefin-containing nonwoven material and the corresponding fiber, fibrillated film, and nonwoven product thereof, whereby essentially hydrophobic polyolefin-containing fiber or film is topically treated with an effective amount of one or more of a water soluble polyalkoxylated polydimethylsiloxane, an alkoxylated ricinolein with certain fatty acids, or corresponding hydrogenated derivatives thereof.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: September 3, 1991
    Assignee: Hercules Incorporated
    Inventor: A. Chandler Schmalz
  • Cardable hydrophobic polypropylene fiber, material and method for preparation thereof
    Patent number: 4938832
    Abstract: A method for placing hydrophobic polyolefin fiber in condition for cutting, carding and production of nonwoven material without substantial sacrifice in desired hydrophobic properties in the corresponding nonwoven, by utilization of a sequential treatment of the fiber with a neutralized phosphoric acid ester and a polysiloxane of defined classes.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: July 3, 1990
    Assignee: Hercules Incorporated
    Inventor: A. Chandler Schmalz
  • Cardable hydrophobic polypropylene fiber, material and method for preparation thereof
    Patent number: RE35621
    Abstract: A method for placing hydrophobic polyolefin fiber in condition for cutting, carding and production of nonwoven material without substantial sacrifice in desired hydrophobic properties in the corresponding nonwoven, by utilization of a sequential treatment of the fiber with a neutralized phosphoric acid ester and a polysiloxane of defined classes.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Hercules Incorporated
    Inventor: A. Chandler Schmalz