Patents by Inventor Wilfred Eugene Riddell

Wilfred Eugene Riddell 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: 6494974
    Abstract: A method of forming a meltblown web having meltblown fibers and particles is provided. The particles are heated to a temperature approximating that of the meltblown fibers as they are being extruded. As a portion of any heated particle impacts the skin of one or more solidifying meltblown fibers, that portion of any heated particle penetrates into one or more solidifying particles. Although a portion of any particle becomes embedded in and retained by one or more meltblown fibers, such surface penetration is generally slight desirably leaving a substantial amount of surface area of any particle available for interaction with any medium to which a web may be exposed.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: December 17, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Wilfred Eugene Riddell
  • Publication number: 20020155776
    Abstract: A meltblown web having meltblown fibers and particles is provided. The particles are embedded in and retained by one or more meltblown fibers as a result of surface penetration of the particles into one or more meltblown fibers. The surface penetration of any particle into one or more meltblown fibers is generally slight thus leaving a substantial amount of the surface area of any particle available for interaction with any medium to which the web is exposed.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 24, 2002
    Inventors: Patricia Ann Mitchler, Wilfred Eugene Riddell, Carmen Ann Baker
  • Patent number: 6417120
    Abstract: A meltblown web having meltblown fibers and particles is provided. The particles are embedded in and retained by one or more meltblown fibers as a result of surface penetration of the particles into one or more meltblown fibers. The surface penetration of any particle into one or more meltblown fibers is generally slight thus leaving a substantial amount of the surface area of any particle available for interaction with any medium to which the web is exposed.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 9, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Patricia Ann Mitchler, Wilfred Eugene Riddell, Carmen Ann Baker
  • Publication number: 20020017354
    Abstract: A method of forming a meltblown web having meltblown fibers and particles is provided. The particles are heated to a temperature approximating that of the meltblown fibers as they are being extruded. As a portion of any heated particle impacts the skin of one or more solidifying meltblown fibers, that portion of any heated particle penetrates into one or more solidifying particles. Although a portion of any particle becomes embedded in and retained by one or more meltblown fibers, such surface penetration is generally slight desirably leaving a substantial amount of surface area of any particle available for interaction with any medium to which a web may be exposed.
    Type: Application
    Filed: September 24, 2001
    Publication date: February 14, 2002
    Inventor: Wilfred Eugene Riddell
  • Patent number: 6319342
    Abstract: A method of forming a meltblown web having meltblown fibers and particles is provided. The particles are heated to a temperature approximating that of the meltblown fibers as they are being extruded. As a portion of any heated particle impacts the skin of one or more solidifying meltblown fibers, that portion of any heated particle penetrates into one or more solidifying particles. Although a portion of any particle becomes embedded in and retained by one or more meltblown fibers, such surface penetration is generally slight desirably leaving a substantial amount of surface area of any particle available for interaction with any medium to which a web may be exposed.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: November 20, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Wilfred Eugene Riddell
  • Patent number: 6071451
    Abstract: The present invention is a method for producing a nonwoven fabric from a water modifiable polyolefin-containing film. In order to produce the fabric where polyethylene is the minority constituent, a polymer blend is formed with the polyethylene as the dispersed phase and polyethylene oxide as the continuous phase. In another embodiment wherein the polyethylene is the majority constituent and the polyethylene oxide is the minority constituent of the film, a reactive blend created during processing exhibits an inverse phase morphology so that the polyethylene oxide becomes the continuous phase and the polyethylene becomes the dispersed phase. In either embodiment, the film is then treated with an aqueous solvent to remove the polyethylene oxide to produce the nonwoven, porous fabric. The resulting nonwoven, porous fabric has a silk-like hand and shine ideal for disposable personal hygiene articles, and is flushable through waste water disposal systems.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: June 6, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz, Wilfred Eugene Riddell
  • Patent number: 5706950
    Abstract: A distinctive composite article has a longitudinal, length dimension and a lateral, width dimension. The article includes a flexible outer shell portion having a shell length and a shell width. At least a portion of a flexible drape layer is substantially affixed to the shell portion, and the drape layer has a drape width which is larger than the shell width. Additionally, the drape layer may have a drape length which is larger than the shell length. The drape layer includes a first laterally extending fold line, a first longitudinally extending fold line and at least a second longitudinally extending fold line. The longitudinally extending fold lines provide for a laterally-folded drape width which is not more than the shell width. The drape layer may also include at least a second laterally extending fold line, and the laterally extending fold lines may also provide for a longitudinally-folded drape length which is not more than the shell length.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: January 13, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Dawn Lynn Ilnicki Houghton, Jean Sandra Feyen, Wilfred Eugene Riddell, Paula Cardinahl Winkel, Joseph Eric Winter