Patents by Inventor Shahrokh Naieni

Shahrokh Naieni 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).

  • Glyoxal crosslinked cellulosic fibers having high bulk
    Publication number: 20050016699
    Abstract: Glyoxal crosslinked cellulosic fibers having high wet bulk, and methods for making the fibers.
    Type: Application
    Filed: July 25, 2003
    Publication date: January 27, 2005
    Inventors: Angel Stoyanov, Shahrokh Naieni
  • Unitary absorbent system
    Patent number: 6734335
    Abstract: A unitary absorbent composite having a plurality of strata is disclosed. In the composite, adjacent strata are separated by a transition zone integrally connecting the strata. Each stratum includes fibers and a binder, and the transition zone includes fibers from adjacent strata. Method for forming the unitary composite are also disclosed.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: May 11, 2004
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Daniel T. Bunker, Charles E. Miller, Jeffrey D. Mathews, Fred B. Howard, Terry M. Grant, Shahrokh A. Naieni, David G. Marsh, Melissa L. Dopps, Kay Rokman, Juhani Jansson, Eino Laine
  • Wetlaid unitary stratified composite containing absorbent material
    Patent number: 6673983
    Abstract: A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: January 6, 2004
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Wetlaid unitary stratified composite
    Patent number: 6670522
    Abstract: A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: December 30, 2003
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Absorbent article containing unitary stratified composite
    Publication number: 20030171727
    Abstract: An unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Application
    Filed: February 24, 2003
    Publication date: September 11, 2003
    Applicant: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Absorbent article containing unitary stratified composite
    Publication number: 20030167045
    Abstract: An unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Application
    Filed: February 24, 2003
    Publication date: September 4, 2003
    Applicant: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Unitary stratified composite
    Publication number: 20030130633
    Abstract: A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Application
    Filed: November 13, 2002
    Publication date: July 10, 2003
    Applicant: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Absorbent article containing unitary stratified composite
    Patent number: 6525240
    Abstract: An unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 25, 2003
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Absorbent article containing a wetlaid unitary stratified composite
    Patent number: 6521812
    Abstract: A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 18, 2003
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
  • Absorbent article containing a foam-formed unitary stratified composite
    Patent number: 6518479
    Abstract: A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 11, 2003
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Matthews, Shahrokh A. Naieni, Charles E. Miller
  • Unitary absorbent layer
    Publication number: 20030018311
    Abstract: A unitary absorbent layer composed of a crosslinked cellulosic fibers and a binder is disclosed. In a preferred embodiment, the binder is a bicomponent binding fiber. In combination with one or more other layers in an absorbent article, the unitary absorbent layer can rapidly acquire, distribute, temporarily store, and then release the acquired liquid to other liquid retention layers. Methods for forming the unitary absorbent layer are also disclosed.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 23, 2003
    Applicant: Weyerhaeuser Company
    Inventors: Peter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni
  • UNITARY ABSORBENT LAYER
    Publication number: 20020026166
    Abstract: A unitary absorbent layer composed of a crosslinked cellulosic fibers and a binder is disclosed. In a preferred embodiment, the binder is a bicomponent binding fiber. In combination with one or more other layers in an absorbent article, the unitary absorbent layer can rapidly acquire, distribute, temporarily store, and then release the acquired liquid to other liquid retention layers. Methods for forming the unitary absorbent layer are also disclosed.
    Type: Application
    Filed: August 20, 1998
    Publication date: February 28, 2002
    Applicant: Weyerhaeuser Company
    Inventors: PETER A. GRAEF, COLIN ELSTON, DANIEL T. BUNKER, FRED B. HOWARD, JEFFREY D. MATTHEWS, SHAHROKH A. NAIENI
  • Preparing individualized polycarboxylic acid crosslinked cellulosic fibers
    Patent number: 5873979
    Abstract: In preparing individualized polycarboxylic acid crosslinked fibers, defibration requirements are reduced to obtain a particular wet responsiveness and satisfactory absorbency properties are maintained even without washing or bleaching and washing, and improved dry resiliency is obtained, by using a reduced surface tension solution of polycarboxylic acid crosslinking agent.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: February 23, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Shahrokh A. Naieni
  • Heat treated high lignin content cellulosic fibers
    Patent number: 5709774
    Abstract: Heat-treated-in-air high lignin content cellulosic fibers which are free of moieties from crosslinking agents, for use in absorbent structures, are prepared by fluffing high lignin content fibers at a consistency of at least 40%, and heating in air at atmospheric pressure at a temperature ranging from 120.degree. C. to 280.degree. C. fluffed fiber water admixture having a consistency of at least 60% or moisture-free fluffed fibers, to remove any moisture content and heat treat the resulting moisture-free high lignin content fibers for at least 5 seconds, or by heating a sheet of dry (0-40% moisture content) high lignin content fibers utilizing these same heating conditions and then fluffing.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: January 20, 1998
    Assignee: The Procter & Gamble Company
    Inventor: Shahrokh A. Naieni
  • Esterified high lignin content cellulosic fibers
    Patent number: 5484896
    Abstract: Individualized, esterified high lignin content cellulosic fibers containing intrafiber C.sub.2 -C.sub.9 polycarboxylic acid ester perform unexpectedly better in absorbent applications than lower lignin content esterified fibers from the same furnish.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: January 16, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Shahrokh A. Naieni, Carlisle M. Herron, Thomas R. Hanser