Patents by Inventor Perry H. Lin
Perry H. Lin 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).
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Patent number: 5616412Abstract: Fine denier filaments having a high elongation at break of a blend polypropylene and polystyrene are made by forming an intimate blend using a twin screw extruder and then spinning the blend.Type: GrantFiled: June 11, 1996Date of Patent: April 1, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 5523155Abstract: Triangular thermoplastic polymer filaments having 3 or 3 pair axially extending voids located along the convex sides of the filament and spinneret plates for producing such filaments.Type: GrantFiled: May 11, 1995Date of Patent: June 4, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Perry H. Lin, Harry V. Samuelson
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Patent number: 5498386Abstract: This invention relates to an improved process for making colored polyamide fibers. The process involves adding about 0.1 to about 3.0 weight percent polycarbonate to a polyamide melt prior to extruding the melt through a spinneret to make colored fibers. The invention also encompasses the resultant fibers.Type: GrantFiled: March 16, 1994Date of Patent: March 12, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Perry H. Lin, Yanhui Sun
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Patent number: 5447794Abstract: Sheath-core polyamide filaments are disclosed which are resistant to staining by coffee and acid dyes common in food and beverages. The sheath component is comprised of a partially aromatic or high carbon polyamide. The core component may be nylon 66, nylon 6 or copolymers thereof. Textile articles made from these sheath-core filaments are also disclosed.Type: GrantFiled: September 7, 1994Date of Patent: September 5, 1995Assignee: E. I. du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 5391703Abstract: An improved process for preparing pigmented drawn polyamide fibers is disclosed, the improvement being the improved processability obtained from the use as a carrier polymer for the pigment dispersion of a random copolymer of hexamethlyene diamine, isophthaiic acid and terephthalic acid.Type: GrantFiled: May 19, 1993Date of Patent: February 21, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 5325572Abstract: A yarn bulking jet has a particular arrangement of the yarn passage through the jet and the two fluid conduits for directing fluid to opposite sides of the yarn passing through the passage is capable of providing control for entangling the yarn by increasing or decreating fluid flow in one of the two fluid conduits.Type: GrantFiled: June 23, 1992Date of Patent: July 5, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Frederick S. Dickson, III, Perry H. Lin, Norvel W. Orendorf
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Patent number: 5279897Abstract: A carpet yarn containing continuous synthetic filaments having a four sided cross-sectional contour and four substantially equispaced continuous voids are disclosed. The voids have a substantially round or nonround shape, and each void is substantially centered on a side of the filament's contour.Type: GrantFiled: October 30, 1992Date of Patent: January 18, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventors: Michael T. Goodall, Craig A. Jackson, Perry H. Lin
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Patent number: 5230957Abstract: Continuous synthetic filaments having a four sided cross-sectional contour and four substantially equispaced continuous voids are disclosed. The voids have a substantially round or nonround shape, and each void is substantially centered on a side of the filament's contour.Type: GrantFiled: July 20, 1992Date of Patent: July 27, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 5223196Abstract: An improved process for melt-spinning a pigmented hexamethylene adipamide fiber from a melt blend of a polymer and a colored pigment wherein the polymer is a random interpolyamide or a block polymer having two different difunctional recurring amide-forming moieties other than those which form hexamethylene adipamide is disclosed along with pigmented hexamethylene adipamide polymer fibers having tenacities greater than 7.5 or even 8 grams per denier.Type: GrantFiled: November 20, 1990Date of Patent: June 29, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Ketan G. Shridharani, Peter R. Witt, Perry H. Lin, Sundar M. Rao
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Patent number: 5190821Abstract: Continuous synthetic filaments having a four sided cross-sectional contour and four substantially equispaced continuous voids are disclosed. The voids have a substantially round or nonround shape, and each void is substantially centered on a side of the filament's contour.Type: GrantFiled: July 24, 1991Date of Patent: March 2, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Michael T. Goodall, Craig A. Jackson, Perry H. Lin
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Patent number: 5147704Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.Type: GrantFiled: February 6, 1992Date of Patent: September 15, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 5116681Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.Type: GrantFiled: August 13, 1990Date of Patent: May 26, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 4997712Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.Type: GrantFiled: October 5, 1989Date of Patent: March 5, 1991Assignee: E. I. du Pont de Nemours and CompanyInventor: Perry H. Lin
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Patent number: 4900495Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.Type: GrantFiled: April 8, 1988Date of Patent: February 13, 1990Assignee: E. I. Du Pont de Nemours & Co.Inventor: Perry H. Lin
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Patent number: 4343860Abstract: Fibers and yarns, in self-crimpable or crimped condition, are made from drawn, nonbulbous monocomponent fibers of polyhexanethylene adipamide or of polycaproamide. The fibers are particularly suited for use in carpet yarns. A process is disclosed for fabricating the fibers and yarns.Type: GrantFiled: June 15, 1981Date of Patent: August 10, 1982Assignee: E. I. Du Pont de Nemours and CompanyInventors: George A. Fernstrom, Harold H. Hebeler, Perry H. Lin, Robert R. Moneymaker
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Patent number: 4301102Abstract: A process is provided for preparing self-crimpable monocomponent fibers by the sequential steps of melt-spinning a polymer of polyhexamethylene adipamide or polycaproamide into filaments, quenching the filaments by a cross-flow of air to an average surface temperature of about 40.degree. to 130.degree. C., applying an effective amount of water to the filaments while they are in said temperature range, and then drawing the filaments at a draw ratio of at least 1.3:1 to obtain a tenacity of at least 1.3 gpd, a break elongation of less than 120% and a latent, substantially helical, frequently reversing crimp of at least 6 filament crimp index. The novel products of the invention, which include fibers and yarns, in self-crimpable or crimped condition, are particularly suited for use in carpets.Type: GrantFiled: July 16, 1979Date of Patent: November 17, 1981Assignee: E. I. Du Pont de Nemours and CompanyInventors: George A. Fernstrom, Harold H. Hebeler, Perry H. Lin, Robert R. Moneymaker