Patents by Inventor David Offord

David Offord 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: 20040055093
    Abstract: The present invention is directed to a method for treating a synthetic, man-made or natural fiber substrate to create a permanently attached protein sheath around each fiber of the substrate. Such a treatment gives a composite substrate that exhibits the most desirable characteristics of the fiber core coupled with the most desirable characteristics of the protein sheath. It is also possible to apply this technology to individual synthetic fibers or yarns, if desired, before weaving, knitting, stitch-bonding or other method of woven or non-woven substrate formation.
    Type: Application
    Filed: July 21, 2003
    Publication date: March 25, 2004
    Applicant: Nano-Tex, LLC
    Inventors: David A. Offord, William Ware, Dan B. Millward, David S. Soane, Manfred A. Young
  • Publication number: 20040048541
    Abstract: The present invention is directed to a method for treating a synthetic, man-made, or natural fiber substrate to create a permanently attached carbohydrate sheath around the fibers of the substrate. Such a treatment gives a composite fibrous substrate that exhibits the most desirable characteristics of the fiber core coupled with the most desirable characteristics of the carbohydrate sheath. It is also possible to apply this technology to individual synthetic fibers or yarns, if desired, before weaving, knitting, stitch-bonding or other method of woven or non-woven substrate formation.
    Type: Application
    Filed: July 21, 2003
    Publication date: March 11, 2004
    Applicant: Nano-Tex, LLC
    Inventors: David A. Offord, William Ware, Dan B. Millward, David S. Soane, Manfred A. Young
  • Patent number: 6617268
    Abstract: This invention is directed to methods for the treatment of cellulose-containing fibers and yarn to provide protection to the cellulose from attack by enzymes. The method comprises the steps of exposing cellulose-containing fibers and yarn to an aqueous solution of an enzyme-repelling chemical to give the fibers or yarn a protective coating, and using the protectively coated fibers and yarn to prepare cloth or fabric. In another embodiment, the method of the invention comprises the step of exposing a fabric comprising cellulose-containing yarn to an aqueous solution of an enzyme-repelling chemical to give the fabric a protective coating. The invention also encompasses cellulose-containing fibers and yarn, including cotton, having a protective enzyme-repelling coating. The invention is further directed to denim fabric comprising cotton fill yarn having a protective enzyme-repelling coating.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: September 9, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David A. Offord, David S. Soane, William Ware, Jr., Matthew R. Linford
  • Patent number: 6617267
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. Multifunctional molecules for use in modifying the surfaces of materials such as textile fibers, yarns and other fabrics made of or, including cotton, wool and nylon, are provided. The multifunctional molecules can include hydrophobic regions and/or hydrophilic regions. The multifunctional molecules also may include binding functional groups that permit either non-covalent or covalent binding to the material being modified, thus permitting the multifunctional molecule to form a non-covalent or covalent coating on the material.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: September 9, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Patent number: 6607994
    Abstract: This invention is directed to preparations useful for the permanent or substantially permanent treatment of textiles and other webs. More particularly, the preparations of the invention comprise an agent or other payload surrounded by or contained within a polymeric encapsulator that is reactive to webs, to give textile-reactive nanoparticles. By “textile-reactive” is meant that the payload nanoparticle will form a chemical covalent bond with the fiber, yarn, fabric, textile, finished goods (including apparel), or other web or substrate to be treated. The polymeric encapsulator of the payload nanoparticle has a surface that includes functional groups for binding or attachment to the fibers of the textiles or other webs to be treated, to provide permanent attachment of the payload to the textiles. Alternatively, the surface of the nanoparticle includes functional groups that can bind to a linker molecule that will in turn bind or attach the nanoparticle to the fiber.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: August 19, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord, Matthew R Linford, Dan B. Millward, William Ware, Jr., Lael Erskine, Eric Green, Ryan Lau
  • Patent number: 6607564
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with a acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: August 19, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20030153001
    Abstract: Synthetic polymer complements (SPCs) are provided, as well as methods for their synthesis and use. The SPCs may have surfaces that include functional groups that are complementary to surface sites of targets such as nanostructures or macromolecular targets, and may be capable of specifically interacting with such targets. The positions of the functional groups in one embodiment are stabilized by a polymer network. The SPCs are formed by contacting the target with a set of monomers which self-assemble on the target, and then are polymerized into a network to form the synthetic polymer complement. At least a portion of the surface of the resulting SPC thus may include an imprint of the target. The complex of the SPC and the target may be the desired product. Alternatively, the target is released, for example, by controllably expanding and contracting the crosslinked network. The SPC is isolated and used in many applications.
    Type: Application
    Filed: October 26, 2001
    Publication date: August 14, 2003
    Applicant: Alnis, LLC
    Inventors: David S. Soane, Stephen E. Barry, Andrew Goodwin, David A. Offord, Michael G. Perrott
  • Patent number: 6599327
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with an acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: July 29, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20030101522
    Abstract: The present invention is directed to polymeric treatment preparations for textiles and other fibrous substrates that impart water and oil repellency to fibers, yarns, textiles, or other fibrous substrates. More particularly, this invention comprises an aqueous solution, emulsion or suspension of (a) a fluorinated polymer that contains reactive groups that can complex with metal atoms that have a formal charge of 2 or greater, and (b) one or more metal atoms that have a formal charge of 2 or greater. The invention is further directed to the process for treating fibrous substrates with textile preparations in one step that provide water/soil repellency that is durable to repeated cleanings and to abrasion. This invention is further directed to the yarns, fibers, fabrics, textiles, webs, finished goods, or nonwovens (encompassed herein under the terms “textiles” and “fibrous substrates”) treated with the textile-reactive water- and soil-resistant preparation of the invention.
    Type: Application
    Filed: October 11, 2002
    Publication date: June 5, 2003
    Applicant: Nano-Tex, LLC
    Inventors: Matthew R. Linford, David S. Soane, David A. Offord
  • Patent number: 6544594
    Abstract: The present invention is directed to polymeric treatment preparations for textiles and other fibrous substrates that impart water and oil repellency to fibers, yarns, textiles, or other fibrous substrates. More particularly, this invention comprises an aqueous solution, emulsion or suspension of (a) a fluorinated polymer that contains reactive groups that can complex with metal atoms that have a formal charge of 2 or greater, and (b) one or more metal atoms that have a formal charge of 2 or greater. The invention is further directed to the process for treating fibrous substrates with textile preparations in one step that provide water/soil repellency that is durable to repeated cleanings and to abrasion. This invention is further directed to the yarns, fibers, fabrics, textiles, webs, finished goods, or nonwovens (encompassed herein under the terms “textiles” and “fibrous substrates”) treated with the textile-reactive water- and soil-resistant preparation of the invention.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: April 8, 2003
    Assignee: Nano-Tex, LLC
    Inventors: Matthew L. Linford, David S. Soane, David A. Offord
  • Publication number: 20030051295
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with a acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Application
    Filed: July 17, 2002
    Publication date: March 20, 2003
    Applicant: Nano- Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Patent number: 6517933
    Abstract: The invention is directed to a hybrid polymer material or system that combines naturally occurring building blocks with synthetic building blocks. The sets of naturally occurring and synthetic building blocks are mixed and joined on a molecular or nanoscopic level to give homogeneous or microphase-separated morphologies to the resulting mixed polymer system. These hybrid polymers combine the comfort attributes of natural materials with the robustness and design properties of synthetic materials.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: February 11, 2003
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, Matthew R. Linford, David A. Offord, Dan B. Millward, William Ware, Jr.
  • Publication number: 20030013369
    Abstract: This invention is directed to preparations useful for the permanent or substantially permanent treatment of textiles and other webs. More particularly, the preparations of the invention comprise an agent or other payload surrounded by or contained within a polymeric encapsulator that is reactive to webs, to give textile-reactive nanoparticles. By “textile-reactive” is meant that the payload nanoparticle will form a chemical covalent bond with the fiber, yarn, fabric, textile, finished goods (including apparel), or other web or substrate to be treated. The polymeric encapsulator of the payload nanoparticle has a surface that includes functional groups for binding or attachment to the fibers of the textiles or other webs to be treated, to provide permanent attachment of the payload to the textiles. Alternatively, the surface of the nanoparticle includes functional groups that can bind to a linker molecule that will in turn bind or attach the nanoparticle to the fiber.
    Type: Application
    Filed: December 6, 2000
    Publication date: January 16, 2003
    Inventors: David S. Soane, David A. Offord, Matthew R. Linford, Dan B, Millward, William Ware,, Lael Erskine, Eric Green, Ryan Lau
  • Publication number: 20030008078
    Abstract: The present invention is directed to a water- and oil repellency-imparting preparation for fibrous and other substrates, the preparation comprising a fluorinated polymer and a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group, optionally together with an anhydride-forming catalyst, such as sodium hypophosphite. The preparation can further optionally comprise other additives such as, for example, an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 9, 2003
    Applicant: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20020189024
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with an acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Application
    Filed: July 5, 2002
    Publication date: December 19, 2002
    Applicant: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Patent number: 6485530
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For example, materials such as cellulose may be modified by reacting it with an acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: November 26, 2002
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20020160675
    Abstract: The present invention relates to textile treatment compositions for imparting desirable characteristics durably to textile fibers and fabrics, including softness, hydrophobicity, oleophobicity, surface lubricity, abrasion resistance, tear resistance, improved drape, and pilling resistance. More particularly, in one embodiment, the invention is directed to preparations that comprise a carboxylate-functionalized fluorinated polymer and a catalyst that is capable of forming reactive anhydride rings between carboxyl groups on the polymer. In another embodiment, the invention is directed to preparations comprising a polymeric softener having at least one anhydride functional group or at least one reactive group capable of forming an anhydride functional group, together with a catalyst for forming anhydrides from the reactive group or groups. In either embodiment, the resulting reactive anhydride rings bind to substrates, such as textiles and other webs, having free sulfhydryl, alcohol, or amine groups.
    Type: Application
    Filed: March 6, 2002
    Publication date: October 31, 2002
    Applicant: Nano-Tex, LLC
    Inventors: Matthew R. Linford, David S. Soane, David A. Offord, William Ware
  • Patent number: 6472476
    Abstract: The present invention is directed to a water- and oil repellency-imparting preparation for fibrous and other substrates, the preparation comprising a fluorinated polymer and a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group, optionally together with an anhydride-forming catalyst, such as sodium hypophosphite. The preparation can further optionally comprise other additives such as, for example, an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: October 29, 2002
    Assignee: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20020155771
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. Multifunctional molecules for use in modifying the surfaces of materials such as textile fibers, yams and other fabrics made of or, including cotton, wool and nylon, are provided. The multifunctional molecules can include hydrophobic regions and/or hydrophilic regions. The multifunctional molecules also may include binding functional groups that permit either non-covalent or covalent binding to the material being modified, thus permitting the multifunctional molecule to form a non-covalent or covalent coating on the material.
    Type: Application
    Filed: January 29, 2002
    Publication date: October 24, 2002
    Applicant: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord
  • Publication number: 20020152560
    Abstract: Provided are compounds and methods for modifying a material to change properties of the material, as well as a variety of products obtained using the methods. In one embodiment, a material comprising one or more modifiable functional groups is reacted with an activated hydrophobic acyl group in the presence of a hindered base, thereby to covalently attach the hydrophobic acyl group to the modifiable functional groups on the material. The material which is modified may be, for example, a carbohydrate, and the modifiable functional groups on the material may be hydroxyls. For,example, materials such as cellulose may be modified by reacting it with an acid chloride or acid anhydride including a hydrophobic acyl group, in the presence of a hindered base, such as tripentylamine, to attach the hydrophobic acyl groups to the hydroxyls on the cellulose, thereby to increase the hydrophobicity of the cellulose.
    Type: Application
    Filed: June 6, 2002
    Publication date: October 24, 2002
    Applicant: Nano-Tex, LLC
    Inventors: David S. Soane, David A. Offord