1
John D Gibbon: Slit extrusion die. Fiber, Roderick B Macleod, Pamela D Kasa, January 8, 1980: US04182606 (9 worldwide citation)

A slit extrusion die with a modified entry port which allows extrusion of a low denier tape at high draw down ratios is disclosed. The die has an entry port wherein the depth of the slit is greater at both ends than at the middle by an amount equal to 0.1 to 0.4 times the length of the slit.


2
John D Gibbon, Virgil J Adkins Jr: Process control system. Celanese Corporation, Forrest D Stine, June 23, 1987: US04675378 (9 worldwide citation)

An apparatus and process for the continuous manufacture of high stress, high denier industrial yarn spun from polyethylene terephthalate polyester. A control system continuously measures melt viscosity of the polymer both at the outlet from a polymerization zone and at a downstream location adjacent ...


3
John D Gibbon, Stephan F Sherriff: Heterofilament composite yarn. Hoechst Celanese Corporation, Philip P McCann, August 8, 1995: US05439741 (8 worldwide citation)

A heterofilament of a PBT sheath, a multifilament composite yarn composed of a plurality of heterofilaments having PBT sheath, and a conductive bundle containing a wire wrapped with a plurality of the multifilament composite yarn.


4
John D Gibbon, Terry E Lawler, Hyun Nam Yoon, Larry F Charbonneau: Process for the expeditious formation of a high strength shaped article of poly(6-oxy-2-naphthoate-4-oxybenzoate). Celanese Corporation, Forrest D Stine, March 4, 1986: US04574066 (7 worldwide citation)

Melt extruded poly(6-oxy-2-naphthoate-4-oxybenzoate) shaped articles of relatively high strength and modulus are produced in a lesser period of time than commonly heretofore required in the prior art. The required polymer is capable of exhibiting an anisotropic melt phase and is formed through the r ...


5
John D Gibbon: High tenacity, low denier poly(ethylene terephthalate) fibrillated tape yarn. Fiber, Roderick B Macleod, Pamela D Kasa, December 25, 1979: US04179875 (7 worldwide citation)

A low denier, high tenacity poly(ethylene terephthalate) fibrillated tape yarn particularly suited for conversion into a sewing thread which exhibits excellent sewing performance is produced by intimately mixing poly(ethylene terephthalate) polymer with from about 0.1 to 20 percent polypropylene bas ...


6
John D Gibbon: Production of a high tenacity, low denier poly(ethylene terephthalate) fibrillated tape yarn. Fiber, Roderick B Macleod, Pamela D Kasa, October 31, 1978: US04123490 (6 worldwide citation)

A low denier, high tenacity poly(ethylene terephthalate) fibrillated tape yarn particularly suited for conversion into a sewing thread which exhibits excellent sewing performance is produced by intimately mixing poly(ethylene terephthalate) polymer with from about 0.1 to 20 percent polypropylene bas ...


7
F Ray Lowder, John D Gibbon: Poly(ethylene terephthalate) fibrillated tape sewing thread. Celanese Corporation, Fiber, Pamela D Kasa, Roderick B Macleod, July 19, 1977: US04036003 (5 worldwide citation)

A low denier, high tenacity poly(ethylene terephthalate) fibrillated tape yarn particularly suited for conversion into a sewing thread which exhibits excellent sewing performance is produced by intimately mixing poly(ethylene terephthalate) polymer with from about 0.1 to 20 percent polypropylene bas ...


8
John D Gibbon, Norman S Anderson: Process for treating chemically stabilized, adhesive activated polyester material, polyester material treated by the process and an improved finish composition. Celanese Corporation, Forrest D Stine, June 14, 1988: US04751143 (4 worldwide citation)

The aging period for chemically stabilized, adhesive activated polyester material can be reduced by contacting the material before it is substantially drawn or stretched with a composition containing a defined epoxide compound catalyzed with ions of at least one of potassium, cesium, rubidium or amm ...


9
John D Gibbon: Heterofilaments for cord reinforcement in rubber goods. Arteva North America r l, Gregory N Clements, September 12, 2000: US06117549 (2 worldwide citation)

In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.


10
John D Gibbon, Norman K Porter: Process for high stress spinning of polyester industrial yarn. Hoechst Celanese Corporation, R H Hammer III, November 30, 1993: US05266255 (2 worldwide citation)

A process for high stress spinning of polyethylene terephthalate yarns to produce a yarn of improved mechanical properties is disclosed. The process of the invention is conducted by spinning polyethylene terephthalate polymer through a spinneret having a plurality of rows of orifices wherein at leas ...