Patents by Inventor Gordon W. Calundann

Gordon W. Calundann 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: 20160090830
    Abstract: A method is provided for lowering the migration of a hydraulic fluid additive within a hydrocarbon-bearing formation penetrated by a well when producing hydraulic fracturing. Many chemical agents currently in use with water/sand (or other proppants) mixtures could pose human and animal health risks if these chemicals migrate from the shale beds into the environment contaminating the water table, rivers, streams and lakes. The fracturing fluid chemical additives employed are designed to be retained or anchored in or near the deep shale layers and are prevented, or greatly delayed from upward migration. Specifically, chemical additives required for proper fracturing fluid performance are covalently chemically bonded to inert particulate materials (e.g. silica having a particle size less than 2000 microns).
    Type: Application
    Filed: November 5, 2015
    Publication date: March 31, 2016
    Applicant: BATTELION ENERGY LLC
    Inventors: Brian C. BENICEWICZ, Gordon W. CALUNDANN
  • Publication number: 20140090850
    Abstract: The present invention relates to improved chemical additives for use in hydraulic fracturing fluids for the recovery of oil or natural gas entrained in deep-layer shale formations. Many chemical agents currently in use in such water/sand (or other proppants) mixtures could pose human and animal health risks if these chemicals migrate from the shale beds into the environment contaminating the water table, rivers, streams and lakes. The fracturing fluid chemical additives of this invention are designed to be retained or anchored in or near the deep shale layers and are prevented, or greatly delayed from upward migration. Specifically, many chemical additives required for proper fracturing fluid performance can be chemically bonded to inert particulate materials before incorporation into said fluids. The fracturing fluid chemical additives are able to perform their function in the shale fracturing process, and then become nearly permanently trapped in the shale layers protecting the environment above.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 3, 2014
    Applicant: Battelion Energy LLC
    Inventors: Brian C. BENICEWICZ, Gordon W. Calundann
  • Patent number: 5290884
    Abstract: A novel miscible blend of component polymers comprised of from about 5 weight percent to about 95 weight percent of a polybenzimidazole and from about 95 weight percent to about 5 weight percent of an aromatic polyamide, aromatic polyamide-hydrazide or aromatic polyamide containing heterocyclic linkages. Miscibility of the component polymers of the blend is indicated by infrared, X-Ray and Differential Scanning Calorimetry analyses and scanning electron photomicrographs. In a film or molded article of a blend mostly comprised of a polybenzimidazole, it is preferred that the aromatic polyamide, aromatic polyamide-hydrazide or aromatic polyamide containing heterocyclic linkages be present in the blend in an amount sufficient to result in a blend with improved tensile properties compared to the polybenzimidazole and that is more thermally processable than the polybenzimidazole.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: March 1, 1994
    Assignee: Hoechst Celanese Corp.
    Inventors: Gordon W. Calundann, Friedrich Herold, Edward C. Chenevey, Tai-Shung Chung
  • Patent number: 5250633
    Abstract: Fibers and fibrets of a novel miscible blend of component polymers comprising from about 5 weight percent to about 95 weight percent of a polybenzimidazole and from about 95 weight percent to about 5 weight percent of an aromatic polyamide, aromatic polyamide-hydrazide or aromatic polyamide containing heterocyclic linkages. Miscibility of the component polymers of the blend is indicated by infrared, X-Ray and Differential Scanning Calorimetry analyses and electron photomicrographs. In fibers or fibrets of a blend mostly comprised of a polybenzimidazole, it is preferred that the aromatic polyamide, aromatic polyamide-hydrazide or aromatic polyamide containing heterocyclic linkages be present in the blend in an amount sufficient to yield a blend with improved tensile properties compared to the polybenzimidazole and more thermally processable than the polybenzimidazole. The fibers or fibrets of the blend have a lower moisture regain than polybenzimidazole fibers or fibrets.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: October 5, 1993
    Assignee: Hoechst Celanese Corp.
    Inventors: Gordon W. Calundann, Edward C. Chenevey, Tai-Shung Chung
  • Patent number: 5171823
    Abstract: The present invention discloses a wholly aromatic, melt processable polyester which is comprised of recurring moieties derived from the following compounds: 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid, an aromatic dihydroxy compound, and 6-hydroxy-2-naphthoic acid. The resulting wholly aromatic polyester is capable of forming a thermotropic melt phase at temperatures below approximately 350.degree. C. and most preferably at temperatures below approximately 290.degree. C.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: December 15, 1992
    Assignee: Hoechst Celanese Corp.
    Inventors: Larry F. Charbonneau, Gordon W. Calundann
  • Patent number: 5164478
    Abstract: A process for preparing polyarylates having low color wherein isophthalic acid, terephthalic acid, and bisphenol A are melt polymerized to form a prepolymer, the prepolymer is crystallized, and then further polymerized in the solid state by heating under an inert gas flow, e.g. nitrogen. Crystallization is accomplished by adding the amorphous prepolymer in powder or pellet form to a organic crystallizing medium such as 2-ethoxyethyl acetate or hexyl acetate. This process produces a polymer having low color content. The crystallized polymer may be made amorphous by melting. This amorphous polymer is useful in applications requiring a transparent, colorless plastic.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: November 17, 1992
    Assignee: Hoechst Celanese Corp.
    Inventors: Cherylyn Lee, Larry F. Charbonneau, Gordon W. Calundann
  • Patent number: 5140093
    Abstract: Novel thermotropic polyesters and polyester-amides containing fluorine bearing linking groups are disclosed and claimed. Preferred embodiments include thermotropic polymers prepared from 4-Hydroxybenzoic acid, 6-hydroxy-2 naphthoic acid, 2,2-bis(4-carboxyphenyl)hexafluoropropane, hydroquinone, and terephthalic acid.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: August 18, 1992
    Assignee: Hoechst Celanese Corp.
    Inventors: Balaram Gupta, Larry F. Charbonneau, Gordon W. Calundann, Tai-Shung Chung
  • Patent number: 5109101
    Abstract: Thermoplastic polyarylate compositions suitable for molding are formed from isophthalic acid, terephthalic acid or mixtures thereof, a bisphenolic compound such as bisphenol A and from about 5 to 10 mole % relative to the monomeric charge of 2-hydroxy-6-naphthoic acid.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: April 28, 1992
    Assignee: Hoechst Celanse Corp.
    Inventors: Balaram Gupta, Gordon W. Calundann
  • Patent number: 5091087
    Abstract: A microporous polybenzimidazole membrane having a uniform pore structure and a narrow pore size distribution, and a process for making the membrane. The process requires coating a polybenzimidazole powder with a high temperature stable polymer and compression molding the coated particles at a temperature in the approximate range of 435.degree.-450.degree. C. to form a sheet or membrane. The polymer is then extracted from the sheet, leaving a fine, uniform, polybenzimidazole microporous structure.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: February 25, 1992
    Assignee: Hoechst Celanese Corp.
    Inventors: Gordon W. Calundann, Tai-Shung Chung
  • Patent number: 5023314
    Abstract: Thermoplastic polyarylate compositions suitable for molding are formed from isophthalic acid, terephthalic acid or mixtures thereof, a bisphenolic compound such as bisphenol A and from about 5 to 10 mole % relative to the monomeric charge of 2-hydroxy-6-naphthoic acid.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: June 11, 1991
    Assignee: Hoechst Celanese Corp.
    Inventors: Balaram Gupta, Gordon W. Calundann
  • Patent number: 4997603
    Abstract: A process for producing a polyhalogenated microporous film having a very narrow pore size distribution and good temperature and chemical resistance. The process involves blending a polyhalogenated copolymer having a very small particle size with a binder polymer utilizing a solvent which is a nonsolvent for the polyhalogenated copolymer but a solvent for the binder polymer, forming a film from the blend, drying the film, heating the film to a temperature at or above the melting point of the polyhalogenated copolymer and under conditions such that the microparticulate particles at their points of mutual contact will neck together to form a relatively continuous matrix and extracting the binder polymer from the film utilizing a solvent for the binder particle to form a microporous film.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: March 5, 1991
    Assignee: Hoechst Celanese Corp.
    Inventors: Edward R. Kafchinski, Herman L. LaNieve, III, Gordon W. Calundann, Tai-Shung Chung
  • Patent number: 4963633
    Abstract: This invention provides novel bisacrylate monomers and thermoset polymers which exhibit nonlinear optical response. The polymers have utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 16, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Anthony J. East, Gordon W. Calundann
  • Patent number: 4957655
    Abstract: In a preferred embodiment this invention provides a second order nonlinear optical film medium which consists of a thermoplastic copolymer which has a crystallographic molecular alignment, and a net dipolar molecular orientation normal to the film plane. The crystallographic molecular alignment is formed by axial mechanical stressing, and the dipolar molecular orientation is induced by an electric or magnetic field.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: September 18, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Garo Khanarian, Donald Raskin, Alan Buckley, Gordon W. Calundann, Anthony J. East
  • Patent number: 4929696
    Abstract: This invention provides novel bisacrylate monomers and thermoset polymers which exhibit nonlinear optical response. The polymers have utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: May 29, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Anthony J. East, Gordon W. Calundann
  • Patent number: 4922003
    Abstract: This invention provides novel bisacrylate monomers and thermoset polymers which exhibit nonlinear optical response. The polymers have utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: May 1, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Anthony J. East, Gordon W. Calundann
  • Patent number: 4910106
    Abstract: Disclosed herein is a process for producing a polyhalogenated microporous film having a very narrow pore size distribution and good temperature and chemical resistance. The process involves blending a polyhalogenated copolymer having a very small particle size with a binder polymer utilizing a solvent which is a nonsolvent for the polyhalogenated copolymer but a solvent for the binder polymer, forming a film from the blend, drying the film, heating the film to a temperature at or above the melting point of the polyhalogenated copolymer and under conditions such that the microparticulate particles at their points of mutual contact will neck together to form a relatively continuous matrix and extracting the binder polymer from the film utilizing a solvent for the binder particle to form a microporous film.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: March 20, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Edward R. Kafchinski, Herman L. LaNieve, III, Gordon W. Calundann, Tai-Shung Chung
  • Patent number: 4868274
    Abstract: There are provided novel homopolyanhydrides of carboxyaryloxyalkanoic acids, e.g. p-carboxyphenoxyacetic acid or 6-(p-carboxyphenoxy)hexanoic acid, capable of being formed into shaped articles. The homopolyanhydrides may be prepared by heating under reflux a solution of the acid monomer in acetic anhydride to form a mixed anhydride of the acid monomer and acetic acid and melt polycondensing the prepolymer by heating it under vacuum in an inert atmosphere. Due to their property of hydrolytic cleavage at predictable rates, the homopolyanhydrides are suitable as polymer matrices providing for the controlled release of an agent such as a drug.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: September 19, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Balaram Gupta, Gordon W. Calundann
  • Patent number: 4746694
    Abstract: The novel polyester of the present invention is capable of forming a highly tractable anisotropic melt phase. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are, 2,6-dioxynaphthalene moiety and terephthaloyl moiety. The polyester can be formed via a melt polymerization procedure to achieve a relatively high degree of polymerization in view of its relatively low melt viscosity. The polyester upon melt extrusion forms quality high performance fibers, films, and three-dimensional shaped articles. The resulting product also well retains desirable mechanical properties at elevated temperatures.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: May 24, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Larry F. Charbonneau, Gordon W. Calundann, Brian C. Benicewicz
  • Patent number: 4654412
    Abstract: Linear, melt processable, crosslinkable, thermotropic wholly aromatic ("liquid crystal") polyesters are prepared by polymerizing difunctional stilbene or tolan derivatives as comonomers with non-ethylenically and non-acetylenically unsaturated aromatic diols, dicarboxylic acids, hydroxy acids or reactive derivatives thereof. Shaped structures made from these polyesters are crosslinked using electron-poor monomers, such as maleic anhydride.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: March 31, 1987
    Assignee: Celanese Corporation
    Inventors: Gordon W. Calundann, Husam A. A. Rasoul, Henry K. Hall, Jr.
  • Patent number: 4522974
    Abstract: The novel polyester of the present invention is capable of forming an anisotropic melt phase and may be prepared on a relatively economical basis. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 1,4-dioxyphenylene moiety, isophthaloyl moiety and terephthaloyl moiety. The polyester has been found to be capable of undergoing melt extrusion to form quality high performance fibers, films, and three-dimensional shaped articles. The inclusion of terephthaloyl moiety has been found to enhance the modulus and strength of articles formed from the polyester as well as the hydrolytic stability of the same. Additionally, such articles can be subjected to higher use temperatures than if the terephthaloyl moiety were omitted.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: June 11, 1985
    Assignee: Celanese Corporation
    Inventors: Gordon W. Calundann, Larry F. Charbonneau, Brian C. Benicewicz