Patents by Inventor Sergio De Leon

Sergio De Leon 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: 20070186465
    Abstract: A protective cover for protection of agricultural products comprises a fibrous nonwoven fabric exhibiting sufficient vapor permeability to alter or control the ripening of the agricultural product so ensconced while retarding passage of dust and insects. The protective cover is positioned generally about associated agricultural products, with the cover being particularly suited for use on products prior to harvest, such as bananas. The cover may be formed from fibrous and/or filamentary elements, and may be formed from fibrous material selected from the group consisting of thermoplastic polymers, thermoset polymers, natural fibers, and combinations thereof. The nonwoven fabric may be formed with protection-enhancing agents such as insecticidal, fungicidal, algaecidal, decay-inhibiting, and UV-protective agents. The nonwoven fabric may be pigmented as desired.
    Type: Application
    Filed: January 23, 2007
    Publication date: August 16, 2007
    Inventors: Fermin Ruiz, Fernando Espinosa, Sergio De Leon, Nick Carter
  • Publication number: 20060111004
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2% . The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 25, 2006
    Inventors: Charles Pearce, Sergio de Leon, Michael Putnam, Cheryl Carlson, Ping Hao
  • Patent number: 7015158
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 21, 2006
    Assignee: Polymer Group, Inc.
    Inventors: Charles Eric Pearce, Sergio de Leon, Michael Putnam, Cheryl Carlson, Ping Hao
  • Patent number: 7008889
    Abstract: A method of forming durable nonwoven fabrics by hydroentanglement includes providing a precursor web comprising a blend of matrix fibers, lyocell fibers, and fusible binder fibers. The precursor web is subjected to hydroentanglement on a three-dimensional image transfer device to create a patterned and imaged fabric. Fabrics formed in accordance with the present invention exhibit significant improvements in strength while remaining drapeable and are capable of withstanding multiple laundry washing with nominal shrinkage.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: March 7, 2006
    Assignee: Polymer Group, Inc.
    Inventors: Samuel K. Black, Sergio De Leon
  • Publication number: 20050272340
    Abstract: The present invention is directed to continuous filament nonwoven fabrics, and more specifically directed to continuous filament nonwoven fabrics for use as low-cost disposable airline and rescue operation blankets. Continuous filament fabrics are formed utilizing the spunbond process. The spunbond process and the manner of preparing a spunbond web is set forth in U.S. Pat. No. 3,341,394 to Kinney and U.S. Pat. No. 4,043,201 to Brock, et al., both of which are herein incorporated by reference. The filamentary blankets of the present invention may be disposed after a single use or semi-reusable, wherein the blanket has a limited number of uses before needing to be replaced. Such blankets are suitable for a variety of applications, such as insulative blankets, emergency rescue blankets, institutional blankets, airline blankets, and other applications where blankets are used only a limited number of times or in some cases only once before being discarded.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 8, 2005
    Inventors: Cliff Bridges, Sergio De Leon, Nick Carter
  • Publication number: 20050204488
    Abstract: It is the objective of the present invention to disclose a method of continuously dyeing durable nonwoven fabrics, and more specifically, nonwoven fabrics comprising a cellulosic fibrous material dyed with indigo dyestuffs. It is in accordance with the present invention, to utilize synthetic fibers in combination with natural or cellulosic fibers in the formation of a nonwoven web. The natural fibers, preferably cotton, make up at least 10% of the fibrous nonwoven fabric.
    Type: Application
    Filed: May 20, 2005
    Publication date: September 22, 2005
    Inventors: Herbert Hartgrove, Sergio De Leon
  • Publication number: 20050204526
    Abstract: A method of forming flame-retardant nonwoven fabrics by hydroentanglement includes providing a precursor web. The precursor web is subjected to hydroentanglement on a three-dimensional image transfer device to create a patterned and imaged fabric. Treatment with a flame-retardant binder enhances the integrity of the fabric, permitting the nonwoven to exhibit desired physical characteristics, including strength, durability, softness, and drapeability. The treated nonwoven may then be dyed by means applicable to conventional wovens.
    Type: Application
    Filed: May 18, 2005
    Publication date: September 22, 2005
    Inventors: Herbert Hartgrove, Sergio de Leon, Samuel Black, Friso Hijenga
  • Publication number: 20050039837
    Abstract: The present invention relates generally to nonwoven materials, and specifically, to a nonwoven fabric comprised of at least three continuous filament precursor webs, each precursor web being of a thermoplastic polymer dissimilar from the other precursor webs, wherein the resulting durable nonwoven laminate fabric exhibits improved tactile and ductile qualities, as well as improved tensile strength, the nonwoven fabric being eminently suitable for application in improving the comfort and use of hygiene, medical and industrial products.
    Type: Application
    Filed: March 10, 2004
    Publication date: February 24, 2005
    Inventors: Errette Bevins, Nick Carter, Sergio de Leon
  • Publication number: 20020187703
    Abstract: A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross-direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross-direction tensile strength of at least about 110 lb/in.
    Type: Application
    Filed: January 16, 2002
    Publication date: December 12, 2002
    Inventors: Charles Eric Pearce, Sergio de Leon, Michael Putnam, Cheryl Carlson, Ping Hao