Patents by Inventor David M. Schertz

David M. Schertz 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: 7053151
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: May 30, 2006
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6890989
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: May 10, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6863959
    Abstract: New methods for and patterns of applying meltsprayed materials in single-layer web and laminate constructions so as to control various characteristics in the webs and laminates is provided. The patterns of adhesive produce scrim or cell-like patterns that allow for control of desirable characteristics. For example, the loft of a laminate may be enhanced, as well as strength properties.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: March 8, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Howard M. Welch, Jay S. Shultz, Leslie D. Dobbins, James R. Fitts, Jr., Charles J. Morell, Donald V. Willitts, Michael T. Morman, Jason K. Wehner, Jessica M. Rawls, David M. Schertz
  • Patent number: 6773797
    Abstract: Breathable, flushable, porous films and articles made therewith and a process for making these films. The present invention is directed to composites comprising a polymer that is water-soluble or water-degradable and a filler. The films are made by extruding the composite materials into a precursor film and, preferably, stretching the precursor film to achieve the desired breathability and water-dispersibility of the finished film. In one embodiment, the composition of the invention comprises a polymer of ethylene oxide and a filler such as calcium carbonate.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: August 10, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz, Dave A. Soerens, Vasily A. Topolkaraev
  • Publication number: 20040005457
    Abstract: The present invention provides a method for producing softer fibers and nonwoven webs that includes forming a mixture comprising (i) a thermoplastic and (ii) an additive selected from the group consisting of polyethylene waxes, glyceryl monostearate, sorbitan tristearate, CATALLOY KS357 MONTELL polyolefin resin, an amide having the chemical structure CH3(CH2)7CH═CH(CH2)xCONH2 where x is selected from 5-15 and mixtures thereof; forming the mixture into fibers and optionally creating a nonwoven web.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Mary Lucille DeLucia, Xin Ning, Jaime Braverman, Eric Mitchell Johns, David M. Schertz, Robert L. Pekrul, Robert L. Hudson, Soo Gyung Jung, JeaSeung Chin, Kue Young You, Kyung Hee Cho, Jin Hee Lee
  • Patent number: 6673446
    Abstract: A fiber composition which comprises a blend of modified polypropylene and modified poly(ethylene oxide). This fiber composition can be melt-processed to make fibers useful in flushable personal care products. A process for making this fiber composition is also provided.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: January 6, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6585922
    Abstract: A fiber composition which comprises a blend of modified polypropylene and modified poly(ethylene oxide). This fiber composition can be melt-processed to make fibers useful in flushable personal care products. A process for making this fiber composition is also provided.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: July 1, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6579934
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: June 17, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6552162
    Abstract: The present invention is a water-responsive blend of a polylactide and a polyvinyl alcohol. The present invention includes films and personal care articles comprising a blend of a polyvinyl alcohol and a polylactide and includes a method of making such films and articles and a method of varying the water responsiveness of such films and articles. In a preferred embodiment, the compositions, films and articles comprise a blend of polyvinyl alcohol and modified polylactide. The compositions and films described herein are useful as a component in flushable and degradable articles.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: April 22, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6552124
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: April 22, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20030018128
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Application
    Filed: March 12, 2001
    Publication date: January 23, 2003
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6500897
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: December 31, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20020193517
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Application
    Filed: March 12, 2001
    Publication date: December 19, 2002
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20020177376
    Abstract: New methods for and patterns of applying meltsprayed materials in single-layer web and laminate constructions so as to control various characteristics in the webs and laminates is provided. The patterns of adhesive produce scrim or cell-like patterns that allow for control of desirable characteristics. For example, the loft of a laminate may be enhanced, as well as strength properties.
    Type: Application
    Filed: December 17, 2001
    Publication date: November 28, 2002
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventors: Howard M. Welch, Jay S. Shultz, Leslie D. Dobbins, James R. Fitts, Charles J. Morell, Donald V. Willitts, Michael T. Morman, Jason K. Wehner, Jessica M. Rawls, David M. Schertz
  • Publication number: 20020128382
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Application
    Filed: December 29, 2000
    Publication date: September 12, 2002
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20020128384
    Abstract: The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions produced by the method. The polymer compositions are useful as components in flushable and degradable articles. Water-sensitive polymer blends and method of making those polymer blends are also disclosed.
    Type: Application
    Filed: December 29, 2000
    Publication date: September 12, 2002
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20020022691
    Abstract: A fiber composition which comprises a blend of modified polypropylene and modified poly(ethylene oxide). This fiber composition can be melt-processed to make fibers useful in flushable personal care products. A process for making this fiber composition is also provided.
    Type: Application
    Filed: April 23, 2001
    Publication date: February 21, 2002
    Inventors: James H. Wang, David M. Schertz
  • Publication number: 20020022690
    Abstract: A fiber composition which comprises a blend of modified polypropylene and modified poly(ethylene oxide). This fiber composition can be melt-processed to make fibers useful in flushable personal care products. A process for making this fiber composition is also provided.
    Type: Application
    Filed: April 23, 2001
    Publication date: February 21, 2002
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6294646
    Abstract: The present invention is a water-responsive blend of a polylactide and a polyvinyl alcohol. The present invention includes films and personal care articles comprising a blend of a polyvinyl alcohol and a polylactide and includes a method of making such films and articles and a method of varying the water responsiveness of such films and articles. In a preferred embodiment, the compositions, films and articles comprise a blend of polyvinyl alcohol and modified polylactide. The compositions and films described herein are useful as a component in flushable and degradable articles.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: September 25, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz
  • Patent number: 6225406
    Abstract: Methods of making inverse phase compositions comprising a polyolefin, such as polyethylene, and poly(ethylene oxide) are described. The inverse phase compositions exhibit an inverse phase in which the volume minority constituent, the poly(ethylene oxide), forms a continuous phase and volume majority constituent, the polyolefin, forms a dispersed or discontinuous phase in the continuous poly(ethylene oxide) phase. The inverse phase compositions have beneficial water degradable properties and can be used in the manufacture of disposable personal hygiene articles. In at least one desirable embodiment, the polyolefin and the poly(ethylene oxide) are grafted with a polar, vinyl monomer in a reactive extrusion process.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: May 1, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James H. Wang, David M. Schertz