Patents by Inventor Donald C. Roe

Donald C. Roe 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: 5554142
    Abstract: A diaper having a transverse partition. The transverse partition is upstanding from the topsheet and presents an abrupt discontinuity out of the plane of the diaper. The partition obstructs fecal material deposited in the rear portion of the diaper from migrating to the front portion of the diaper. The transverse partition has areas of relatively greater and relatively lesser effective heights. This may be accomplished by providing blocking members on the distal edge of the partition.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 10, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Kimberly A. Dreier, Donald C. Roe
  • Patent number: 5554145
    Abstract: Absorbent articles such as disposable diapers, incontinent briefs, diaper holders, training pants, feminine hygiene garments and the like, that have a unique waist feature that improves the dynamic fit as well as the containment characteristics of the absorbent article. Such absorbent articles comprise a chassis assembly preferably comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet; an extensible back waist feature; and a closure system for maintaining the absorbent article on the wearer. The extensible back waist feature provides an extensible feature that provides a more comfortable and contouring fit by initially conformably fitting the diaper to the wearer and by sustaining this fit. The extensible back waist feature has a hip panel, a central waistband panel, and a pair of side panels. The force/extension characteristics of each panel is designed to provide such improved fit and containment.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: September 10, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, David J. K. Goulait, Sheila S. Rodriguez, Edward P. Carlin, Kimberly A. Dreier, Carolyn M. Jasper, Dean J. Daniels
  • Patent number: 5554144
    Abstract: Absorbent articles such as disposable diapers, incontinent briefs, diaper holders, training pants, feminine hygiene garments and the like, that have a unique waist feature that improves the dynamic fit as well as the containment characteristics of the absorbent article. Such absorbent articles comprise a chassis assembly preferably comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet; an extensible back waist feature; and a closure system for maintaining the absorbent article on the wearer. The extensible back waist feature provides an extensible feature that provides a more comfortable and contouring fit by initially conformably fitting the diaper to the wearer and by sustaining this fit. The extensible back waist feature has a hip panel, a central waistband panel, and a pair of side panels. The force/extension characteristics of each panel is designed to provide such improved fit and containment.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: September 10, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, David J. K. Goulait, Sheila S. Rodriquez, Edward P. Carlin, Kimberly A. Dreier, Carolyn M. Jasper, Dean J. Daniels
  • Patent number: 5542942
    Abstract: Absorbent articles to be fitted to wearers, such as disposable diapers, incontinence briefs, diaper holders and the like with improved fastening system and waistband features that provide sustained dynamic fit about the waist of a wearer as well as improved containment characteristics.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: August 6, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Mark J. Kline, Donald C. Roe, Dean J. Daniels, James E. Zorb, Jerry L. Dragoo
  • Patent number: 5516572
    Abstract: A disposable absorbent article contains a liquid pervious topsheet, having a basis weight ranging from 10 to 40 g/yd.sup.2 and comprising a body with at least the upper portion thereof comprising nonwoven fabric prepared by forming a web comprising a homogeneous admixture of from 1 to 50% by weight of melt blown fibers and from 99 to 50% by weight of 1.2 to 5 denier staple synthetic fibers and hydroentangling the fibers to form a fabric, with or without the formation of apertures.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: May 14, 1996
    Assignee: The Procter & Gamble company
    Inventor: Donald C. Roe
  • Patent number: 5514121
    Abstract: A disposable absorbent article such as a diaper. The diaper has a topsheet, backsheet, and an intermediate core. Affixed to the outwardly oriented surface of the topsheet is an expulsive spacer. The spacer receives and collects fecal material from the wearer. The spacer may be removable from the diaper, or may be articulable relative to the diaper. By expelling the spacer from the diaper, fecal material can be easily flushed into the toilet, rather than discarded into a waste receptacle where it presents a sanitation hazard.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: May 7, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, Kimberly A. Dreier
  • Patent number: 5512636
    Abstract: Agglomerating agent and method for use in heap leaching of mineral bearing ores. Cationic polymers alone or in combination with cement or lime are highly effective agglomerating agents in acidic or alkaline leaching operations. The cationic polymers are preferably graft copolymers, block copolymers or linear copolymers of acrylamide and diallyl dimethyl ammonium chloride.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: David M. Polizzotti, Wen P. Liao, Donald C. Roe
  • Patent number: 5505718
    Abstract: Absorbent structures are disclosed which contain specific, relatively narrow, particle size distributions of superabsorbent hydrogel-forming materials. The absorbent structures of the present invention are useful in disposable absorbent articles such as diapers, adult incontinence pads, and the like. The absorbent articles of the present invention comprise a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and backsheet. At least a portion of the absorbent core comprises particles of substantially water-insoluble, absorbent hydrogel-forming, polymer material formed by solution polymerization methods. The particles of the hydrogel-forming, polymer material are of such size that at least about 80% of said particles, by weight, will pass through a U.S. Standard 50 mesh sieve with 297 micron openings and be retained on a U.S.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: April 9, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Donald C. Roe, Jerry L. Dragoo, Gary B. Gilkeson
  • Patent number: 5500220
    Abstract: A foam carrier for a dust control agent and a biological control agent is provided to control fugitive dust dissemination and biological activity in bulk/granular solids.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, Dwight P. Davis, Kevin C. Manning, Edmund J. Bockowski
  • Patent number: 5500213
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyethylene glycols and bis(trichloro methyl) sulfone, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti
  • Patent number: 5492962
    Abstract: Methods of producing particulate, absorbent, polymeric compositions comprising interparticle crosslinked aggregates. In the methods of the present invention, an interparticle crosslinking agent is applied onto precursor particles; the precursor particles are physically associated to form a multiplicity of aggregates; and the interparticle crosslinking agent is reacted with the polymer material of the precursor particles of the aggregates, while maintaining the physical association of the precursor particles, to form crosslink bonds between the precursor particles to form interparticle crosslinked aggregates. The interparticle crosslinked aggregates are formed to such an extent that the mass average particle size of the polymeric composition is at least about 25% greater than the mass average particle size of the precursor particles.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: February 20, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Frank H. Lahrman, Donald C. Roe, Charles J. Berg
  • Patent number: 5472675
    Abstract: An agglomerating agent for use in the heap leaching of mineral bearing ores is disclosed. The agglomerating agent is a polyvinyl alcohol of moderate to high molecular weight which is partially or fully hydrolyzed. The polyvinyl alcohol agglomerating agent can be used alone or in combination with cement or lime in acidic or alkaline heap leaching operations.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: December 5, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: David M. Polizzotti, Donald C. Roe
  • Patent number: 5428076
    Abstract: Flexible, porous, absorbent polymeric macrostructures having flexibility even after extended periods at elevated temperatures and/or low humidities are disclosed. The macrostructure comprises an interparticle crosslinked aggregate and an effective amount of a suitable plasticizer. The macrostructures are suitable for use, for example, in disposable absorbent articles such as diapers.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: June 27, 1995
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5422169
    Abstract: Absorbent structures are disclosed which contain specific, relatively, narrow, particle size distributions of superabsorbent hydrogel-forming materials in relatively high concentrations. The absorbent structures of the present invention are useful in disposable absorbent articles such as diapers, adult incontinence pads, and the like. The absorbent articles of the present invention comprise a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and backsheet. At least a portion of the absorbent core comprises between about 25% and about 90% by weight particles of substantially water-insoluble, absorbent hydrogel-forming, polymer material formed by solution polymerization methods. The particles of the hydrogel-forming, polymer material are of such size that at least about 80% of the particles, by weight, will pass through a U.S. Standard 50 mesh sieve with 297 micron openings and be retained on a U.S.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: June 6, 1995
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5419956
    Abstract: Absorbent structures are disclosed which contain a particulate material composition. The particulate material composition comprised specific, relatively narrow, particle size distributions of superabsorbent hydrogel-forming material particles formed by solution polymerization methods and mixed with inorganic powders. The particles of superabsorbent material are of such size that at least about 70% of said particles, by weight, will pass through a U.S. Standard 50 mesh sieve with 297 micron openings and be retained on a U.S. Standard 170 mesh sieve with 88 micron openings when said particles are tested according to the Sieving Test described herein. The inorganic powder, such as amorphous silica, is intermixed with the particles of superabsorbent material in amount of between about 0.1 to about 5 parts per 100 parts of the particles of superabsorbent material. The absorbent structures of the present invention are useful in disposable absorbent articles such as diapers, adult incontinence pads, and the like.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: May 30, 1995
    Assignee: The Procter & Gamble Company
    Inventor: Donald C. Roe
  • Patent number: 5415795
    Abstract: Method for inhibiting dust emissions from hot (>150.degree. F.) substrates are provided which comprise adding to the substrate an aqueous solution of sodium silicate.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, Bradley J. Utzka
  • Patent number: 5397626
    Abstract: Particulate, absorbent, polymeric compositions comprising interparticle crosslinked aggregates. The interparticle crosslinked aggregates comprise precursor particles of substantially water-insoluble, absorbent, hydrogel-forming, polymer material; and an interparticle crosslinking agent reacted with the polymer material of the precursor particles to form crosslink bonds between the precursor particles. Sufficient interparticle crosslinked aggregates are formed when the mass average particle size of the resultant polymeric composition has been increased by at least about 25% over the mass average particle size of the precursor particles. The resultant polymeric composition provides improved structural integrity, an increased acquisition rate, and minimal gel blocking properties.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: March 14, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Charles J. Berg, Frank H. Lahrman, Donald C. Roe
  • Patent number: 5397316
    Abstract: This application relates to the use of slitted regions in absorbent members formed of absorbent materials that remain relatively thin until wetted with such fluids. Suitable materials include presently preferred varieties of polymeric foam materials. Single and multi-layered absorbent members incorporating slitted regions are disclosed, as well as the use of pre-formed cup-shaped slits for enhanced initial fluid acquisition. Such slitted regions in combination with planar expansion properties enable the absorbent members to respond dynamically to various fluid loading conditions to create useful structural features. The slitted regions, in combination with absorbent materials having expansion potential in at least one direction within the plane of the absorbent member, cause the slitted regions to buckle and/or deform out of the plane of the absorbent member, thereby causing the slit surfaces to displace angularly and/or translationally with respect to one another.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: March 14, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Gary D. LaVon, Gerald A. Young, Gregory W. Taylor, Donald C. Roe, William S. Andes
  • Patent number: 5391370
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyethylene glycols and bis(trichloro methyl) sulfone, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti
  • Patent number: 5391369
    Abstract: A biocidal composition and method for inhibiting and controlling the growth of microorganisms are disclosed. The composition comprises an amount, effective for the intended purpose, of polyvinyl alcohols and gallic or boric acids, in combination with additional biocidal components, the composition in a gel form. The method comprises administering an amount of the gelled composition to the particular water containing system for which treatment is desired.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, David M. Polizzotti