Patents by Inventor Leron R. Dean

Leron R. Dean 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: 6582818
    Abstract: The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains at least 50 mole % of a four carbon diol, such as 1,4-butanediol, or a six carbon diol, such as 1,6-hexanediol or a mixture of a four carbon and six carbon diol. Typically, the polyesters of the invention are semicrystalline and/or crystalline and have a specific melting point ranging from about 140 to about 185° C. The polyesters of the invention may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile/industrial yarns and fabrics, composites and other molded articles.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: June 24, 2003
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Kishan C. Khemani
  • Patent number: 6562938
    Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: May 13, 2003
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Publication number: 20030055206
    Abstract: The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains at least 50 mole % of a four carbon diol, such as 1,4-butanediol, or a six carbon diol, such as 1,6-hexanediol or a mixture of a four carbon and six carbon diol. Typically, the polyesters of the invention are semicrystalline and/or crystalline and have a specific melting point ranging from about 140 to about 185° C. The polyesters of the invention may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile/industrial yarns and fabrics, composites and other molded articles.
    Type: Application
    Filed: October 23, 2002
    Publication date: March 20, 2003
    Applicant: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Kishan C. Khemani
  • Patent number: 6497950
    Abstract: The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains at least 50 mole % of a four carbon diol, such as 1,4-butanediol, or a six carbon diol, such as 1,6-hexanediol or a mixture of a four carbon and six carbon diol. Typically, the polyesters of the invention are semicrystalline and/or crystalline and have a specific melting point ranging from about 140 to about 185° C. The polyesters of the invention may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile/industrial yarns and fabrics, composites and other molded articles.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: December 24, 2002
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Kishan C. Khemani
  • Patent number: 6495656
    Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: December 17, 2002
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Publication number: 20020132960
    Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.
    Type: Application
    Filed: December 20, 2001
    Publication date: September 19, 2002
    Applicant: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Patent number: 6231976
    Abstract: The invention relates to fibers, particularly binder fibers, made from copolyesters and the copolyesters themselves. The copolyesters of the invention are generally formed from a glycol component containing 1,3- or 1,4-cyclohexanedimethanol and ethylene glycol and at least one dicarboxylic acid component. Such copolyesters may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile and industrial yarns, and composites.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: May 15, 2001
    Assignee: Eastman Chemical Company
    Inventors: Leron R. Dean, William A. Haile, Richard L. McConnell
  • Patent number: 6197856
    Abstract: The invention relates to binder fibers made from copolyesters, the copolyesters themselves and catalysts and processes for producing the copolyesters. More particularly, the invention relates to copolyesters formed from 1,4-cyclohexanedimethanol, ethylene glycol and terephthalic acid, napthalenedicarboxylic acid, 1,4-cyclohexane dicarboxylic acid and esters or anhydrides thereof. Such copolyesters may be formed into a variety of products, especially binder fibers for nonwoven fabrics.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: March 6, 2001
    Assignee: Eastman Chemical Company
    Inventors: Leron R. Dean, Michael D. Lambert, William A. Haile, F. Henry Dillow, Mark E. Tincher
  • Patent number: 6139954
    Abstract: The invention relates to amorphous and crystalline fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters of the invention are generally formed from a glycol component, such as a five carbon glycol, and a dicarboxylic acid component. The polyesters may be formed into a variety of products, for example fibers, composites and other molded articles. Preferably the polyesters are binder fibers for nonwovens, textile and industrial yarns and fabrics.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: October 31, 2000
    Assignee: Eastman Chemical Company
    Inventors: Leron R. Dean, William A. Haile, Richard L. McConnell
  • Patent number: 6132868
    Abstract: The invention relates to fibers, particularly binder fibers, made from copolyesters and the copolyesters themselves. The copolyesters of the invention are generally formed from 1,3- or 1,4-cyclohexanedimethanol, ethylene glycol and isophthalic acid or esters thereof and at least one dicarboxylic acid selected from terephthalic acid, naphthalenedicarboxylic acid, 1,3- or 1,4-cyclohexanedicarboxylic acid or esters thereof. Such copolyesters may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile and industrial yarns, and composites.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: October 17, 2000
    Assignee: Eastman Chemical Company
    Inventors: Leron R. Dean, William A. Haile, Richard L. McConnell
  • Patent number: 6100207
    Abstract: Disclosed are head bands comprising a sliver of spontaneously wettable staple fibers. The fibers are of an irregular, grooved shape in cross section and are lightly bound together to permit easy separation into suitable lengths for head bands.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: August 8, 2000
    Assignee: Eastman Chemical Company
    Inventors: Leron R. Dean, Robert J. Bobalik, F. Henry Dillow
  • Patent number: 5348699
    Abstract: This invention relates to a process for preparing copolyester fibers having reduced spinning defects. More particularly, the invention relates to fibers having improved quality prepared from blends of certain poly(ethylene terephthalate) compositions modified with 1,4-cyclohexanedimethanol by melt spinning to produce filaments with decreased spinning defects while maintaining the chemical resistance, abrasion resistance, electrical and mechanical properties normally associated with copolyesters. These polymer blends when heated provide a fiber-forming polymer melt/dope which has excellent flowability and produces high quality fiber when subjected to conventional melt spinning, drawing, texturing, etc. Staple fibers prepared from the polymer blends of the invention when made into high loft battings have excellent fiberfill performance properties, particularly resilience and compression recovery.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: September 20, 1994
    Assignee: Eastman Chemical Company
    Inventors: August K. Meyer, Johnny W. Shadden, Candace M. Stipe, Leron R. Dean
  • Patent number: 4359557
    Abstract: Process for manufacturing polyethylene terephthalate fibers having improved low-pilling properties by admixing ethylene glycol with polyethylene terephthalate polymer in extruder and holding the resulting processed fiber at constant length while heatsetting the fiber, and preferably relaxing the fiber up to about 5% while being heatset to a controlled length; and a polyester fiber as made by the process.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: November 16, 1982
    Assignee: Eastman Kodak Company
    Inventors: Kenneth R. Watkins, Leron R. Dean