Patents by Inventor Dean Van Phan

Dean Van Phan 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).

  • Publication number: 20020168518
    Abstract: The present invention is directed to highly attenuated fibers produced by melt spinning a composition comprising destructurized starch, a thermoplastic polymer, and a plasticizer. The present invention is also directed to highly attenuated fibers containing microfibrils which are formed within the starch matrix. Nonwoven webs and disposable articles comprising the highly attenuated fibers are also disclosed.
    Type: Application
    Filed: May 10, 2001
    Publication date: November 14, 2002
    Applicant: THE PROCTER & GAMBLE COMPANY
    Inventors: Eric Bryan Bond, Jean-Philippe Marie Autran, Larry Neil Mackey, Isao Noda, Hugh Joseph O'Donnell, Dean Van Phan
  • Publication number: 20020153109
    Abstract: A smooth, high density tissue. The tissue has a relatively low caliper, as well as high smoothness and high density. The tissue is calendered from a multidensity, through air dried web.
    Type: Application
    Filed: December 7, 1998
    Publication date: October 24, 2002
    Inventors: PAUL T. WEISMAN, SCOTT THOMAS LOUGHRAN, DEAN VAN PHAN, PAUL DENNIS TROKHAN, ROBERT STANLEY AMPULSKI
  • Patent number: 6464831
    Abstract: A paper web and method of making the paper web are disclosed. The paper web has a background portion and a non-embossed decorative pattern. The decorative pattern has at least one high basis weight region having a basis weight greater than the average basis weight of the surrounding background portion. The decorative pattern can include a number of discrete, decorative indicia. Each decorative indicia can be separated from adjacent decorative indicia by the background portion.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: October 15, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Howard Thomas Deason, Jörg Kleinwächter
  • Patent number: 6447642
    Abstract: An apparatus and process for removing water from a cellulosic web. The papermaking apparatus comprises imprinting member having an absolute void volume that enables a hydraulic connection to be formed between a cellulosic web and a capillary dewatering member when compressed in a nip. The absolute void volume is predetermined based on an estimate of the volume of water expressed from the cellulosic web.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: September 10, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan, Peter Graves Ayers
  • Patent number: 6423186
    Abstract: An apparatus and process for imprinting a web. A yankee drum and pressure roll are juxtaposed to form a nip. An imprinting member, such as through air drying belt or other patterning belt is interposed in the nip. A felt is also interposed in the nip, contacting the backside of the imprinting member. The imprinting member carries a paper web. The paper web is imprinted in the nip and simultaneously transferred to the yankee drying drum. The nip may be formed with a vacuum roll juxtaposed with the felt. The vacuum roll may remove water from the felt and hence the web.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: July 23, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Robert Stanley Ampulski
  • Patent number: 6328850
    Abstract: A multi-layered paper product. The paper product has individual layers for providing a soft tactile sensation to the user, for providing strength, and for providing bulk. Suitable fibers for increasing bulk may be synthetic fibers, debonded fibers, weakly bonded fibers, curled fibers, and fibers combined with particulate fillers. An exemplary embodiment having five layers is disclosed.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: December 11, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 6242073
    Abstract: An absorbent structure comprising freestanding osmotic absorbent sites disposed on or within a capillary substrate. The sites extend outwardly normal to the plane of the absorbent structure or fill apertures within the plane of the absorbent structure. Upon imbibing liquids, the sites of osmotic absorbent can expand without constraint from the substrate.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: June 5, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Arlen Forshey
  • Patent number: 6200419
    Abstract: A paper web and method of making the paper web are disclosed. In one embodiment the paper web includes a continuous relatively thinner region and a plurality of discrete relatively thicker regions. The relatively thicker regions are disposed in the plane of the relatively thinner region. The paper web can have a relatively patterned face and a relatively smooth face. The paper structures can be dried relatively quickly and efficiently, and can provide enhanced absorbency and bulk density while having a relatively smooth face.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: March 13, 2001
    Assignee: The Procter & Gamble Company
    Inventor: Dean Van Phan
  • Patent number: 6146496
    Abstract: A paper web and method of making the paper web are disclosed. In one embodiment the paper web includes a continuous relatively thinner region and a plurality of discrete relatively thickner regions. The relatively thicker regions are disposed in the plane of the relatively thinner region. The paper web can have a relatively patterned face and a relatively smooth face. The paper structures can be dried relatively quickly and efficiently, and can provide enhanced absorbency and bulk density while having a relatively smooth face.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: November 14, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Dean Van Phan
  • Patent number: 6136146
    Abstract: A non-through air dried paper web and method of making such a paper web are disclosed. The paper web includes at least two regions of different density and at least two regions of different basis weight. In one embodiment, the paper web includes a relatively high basis weight continuous network region, a plurality of discrete, relatively low basis weight regions dispersed throughout the relatively high basis weight continuous network region, and a plurality of discrete, intermediate basis weight regions circumscribed by the relatively low basis weight regions.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: October 24, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 6117525
    Abstract: A chemically enhanced paper structure having a discrete pattern of a chemical composition is disclosed. The paper structure comprises a cellulose substrate, such as tissue paper. The substrate has a topography comprising at least two different elevations. The chemical composition may include a chemical softener composition or a surface-active composition and is selectively disposed in register with one of the elevations of the cellulose substrate, preferably the higher elevation regions. The paper structure is suitable for use as bath tissue or facial tissue.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: September 12, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Joe Brian Melvin
  • Patent number: 6039839
    Abstract: A paper web and method of making the paper web are disclosed. The paper web has a background portion and a non-embossed decorative pattern. The decorative pattern has at least one high basis weight region having a basis weight greater than the average basis weight of the surrounding background portion. The decorative pattern can include a number of discrete, decorative indicia. Each decorative indicia can be separated from adjacent decorative indicia by the background portion.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: March 21, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Howard Thomas Deason, Jorg Kleinwachter
  • Patent number: 6022610
    Abstract: An absorbent structure comprising freestanding osmotic absorbent sites disposed on or within a capillary substrate. The sites extend outwardly normal to the plane of the absorbent structure or fill apertures within the plane of the absorbent structure. Upon imbibing liquids, the sites of osmotic absorbent can expand without constraint from the substrate.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: February 8, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Arlen Forshey
  • Patent number: 5981044
    Abstract: Multi-layered tissue paper webs comprising biodegradable chemical softener compositions and binder materials are disclosed. The multi-layered tissue webs are useful in the manufacture of soft, absorbent paper products such as facial tissues and/or toilet tissues. The multi-layered tissue paper products contain a biodegradable chemical softening composition, preferably comprising a mixture of an ester-functional quaternary ammonium compound and a polyhydroxy compound. The multi-layered tissue paper webs also contain an effective amount of binder materials to control linting and/or to offset the loss in tensile strength, if any, resulting from the use of the chemical softening compositions. Preferably, the majority of the biodegradable chemical softening compositions will be disposed on the outer layers of the multi-layered tissue paper products where they are most effective at enhancing softness.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: November 9, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan, Bart Steven Hersko
  • Patent number: 5980691
    Abstract: A smooth, high density tissue. The tissue has a relatively low caliper, as well as high smoothness and high density. The tissue is calendered from a multidensity, through air dried web.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: November 9, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Paul Thomas Weisman, Scott Thomas Loughran, Dean Van Phan, Paul Dennis Trokhan, Robert Stanley Ampulski
  • Patent number: 5871887
    Abstract: The invention comprises an apparatus for use in making a web of papermaking fibers. The apparatus comprising: a dewatering felt layer having a first web facing felt surface at a first elevation and a second oppositely facing felt surface, and a web patterning layer comprising a photosensitive resin. The patterning layer penetrates the first felt surface, and extends from the first felt surface to form a web contacting top surface at a second elevation different from the first elevation. The invention also comprises a method of forming a web support apparatus having a felt layer and a web patterning layer.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: February 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan
  • Patent number: 5846380
    Abstract: A soft absorbent, creped tissue paper having an ATP factor of less than about 0.036, a slip/stick coefficient of less than about 0.024, and a lint level of less than about 6. The tissue paper preferably has a density of less than about 0.15 gram/cm.sup.3. Preferably, the creped tissue paper is a single- or multi-layer, single-ply tissue. More preferably, the creped tissue paper is made by a through air drying technique. Tissue paper having unique combinations of these above attributes is highly desirable by the consumers.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: December 8, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 5843279
    Abstract: Disclosed is a cellulosic fibrous structure, such as paper. The fibrous structure has at least three intensively distinct regions. The regions are distinguished from one another by intensive properties such as basis weight, density and projected average pore size, or thickness. In one embodiment, the fibrous structure has regions of two basis weights, a high basis weight region and a low basis weight region. The high basis weight region is further subdivided into low and high density regions so that a fibrous structure having three regions is produced. A second embodiment is a four region fibrous structure. Two of the regions have generally equivalent relatively high basis weights and two of the regions having generally equivalent relatively low basis weights.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 1, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Dean Van Phan, Paul Dennis Trokhan
  • Patent number: 5840403
    Abstract: A chemically enhanced paper structure having a discrete pattern of a chemical composition is disclosed. The paper structure comprises a cellulose substrate, such as tissue paper. The substrate has a topography comprising at least two different elevations. The chemical composition may include a chemical softener composition or a surface-active composition and is selectively disposed in register with one of the elevations of the cellulose substrate, preferably the higher elevation regions. The paper structure is suitable for use as bath tissue or facial tissue.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: November 24, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan, Joe Brian Melvin
  • Patent number: 5837103
    Abstract: The invention comprises an apparatus for use in making a web of papermaking fibers. The apparatus comprising: a dewatering felt layer having a first web facing felt surface at a first elevation and a second oppositely facing felt surface, and a web patterning layer comprising a photosensitive resin. The patterning layer penetrates the first felt surface, and extends from the first felt surface to form a web contacting top surface at a second elevation different from the first elevation. The invention also comprises an method of forming a web support apparatus having a felt layer and a web patterning layer.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 17, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Paul Dennis Trokhan, Dean Van Phan