Patents by Inventor Bart S. Hersko

Bart S. Hersko 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).

  • Patent number: 5538595
    Abstract: Tissue paper products comprising a two component chemical softener composition and binder materials, either permanent or temporary wet strength binders, and/or dry strength binders are disclosed. The two component chemical softening composition comprises an ester-functional ammonium compound and a polysiloxane compound. Preferred ester-functional ammonium compounds include diester dialkyl dimethyl ammonium salts such as diester di(touch hardened)tallow dimethyl ammonium chloride and/or di(hydrogenated)tallow dimethyl ammonium chloride. Preferred polysiloxanes include amino-functional polydimethyl polysiloxanes wherein less than about 10 mole percent of the side chains on the polymer contain an amino-functional group.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: July 23, 1996
    Assignee: The Proctor & Gamble Company
    Inventors: Paul D. Trokhan, Dean V. Phan, Ward W. Ostendorf, Joel K. Monteith, Bart S. Hersko, Robert S. Ampulski
  • Patent number: 5437766
    Abstract: Multi-ply facial tissue paper products comprising biodegradable chemical softener compositions and a combination of a wet strength binder, either permanent and/or temporary, and a dry strength binder is disclosed.The multi-ply facial tissue paper products contain a biodegradable chemical softening composition comprising a mixture of a biodegradable quaternary ammonium compound and a polyhydroxy compound. The multi-ply facial tissue paper products also contain an effective amount of a wet strength binder, either permanent and/or temporary, and a dry strength binder to control linting and/or to offset the loss in tensile strength, if any, resulting from the use of the biodegradable chemical softening compositions. The use of both wet strength binder, either permanent and/or temporary, and dry strength binder also improves the retention of the chemical softening composition in the sheet.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: August 1, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul D. Trokhan, Stephen R. Kelly, Ward W. Ostendorf, Bart S. Hersko
  • Patent number: 5262007
    Abstract: Tissue paper webs useful in the manufacture of soft, absorbent products such as napkins, facial tissues, and sanitary tissues, and processes for making the webs. The tissue paper webs comprise papermaking fibers, a biodegradable quaternized amine-ester softening compound, a wetting agent, and a temporary wet strength resin. The process comprises a first step of forming an aqueous papermaking furnish from the above-mentioned components. The second and third steps in the basic process are the deposition of the papermaking furnish onto a foraminous surface such as a Fourdrinier wire and removal of the water from the deposited furnish. An alternate process involves the use of the furnish containing the aforementioned components in a papermaking process which will produce a pattern densified fibrous web having a relatively high bulk field of relatively low fiber density in a patterned array of spaced zones of relatively high fiber density.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: November 16, 1993
    Assignee: Procter & Gamble Company
    Inventors: Dean V. Phan, Bart S. Hersko
  • Patent number: 5190563
    Abstract: Disclosed is a process for making individualized, crosslinked fibers which includes the steps of providing cellulosic fibers, contacting the fibers with a solution containing a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent, mechanically separating the fibers into substantially individual form, drying the fibers and reacting the crosslinking agent with the individualized fibers to form intrafiber crosslink bonds. Preferably, the crosslinking agent is citric acid, and preferably, between about 0.5 mole % and about 10.0 mole % of the crosslinking agent reacts to form the intrafiber crosslink bonds. The individualized, crosslinked fibers are useful in a variety of absorbent structure applications.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: March 2, 1993
    Assignee: The Proctor & Gamble Co.
    Inventors: Carlisle M. Herron, David J. Cooper, Thomas R. Hanser, Bart S. Hersko