Patents by Inventor John L. Melquist
John L. Melquist 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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Publication number: 20040109983Abstract: Improvements in compositions, composites, and methods for construction of weather resistant and insulated roofs are disclosed. The type of roofs to which these improvements apply are typically known as built up roofs. Built up roofs feature a substrate as an inner layer normally adjacent to and attached to the exterior of an unimproved roof surface. This invention is directed to improved foamed resin substrates used in such roof constructions. Alternating layers of hot asphalt and roofing felt are applied to the foam substrate layer. In prior art roofs, the foamed resin substrates could not withstand the direct application of hot molten asphalt to the foam surface which necessitated use of an isolation layer between the foamed resin layer and the first asphalt layer. This invention discloses compositions, composites, and methods involving direct application of hot asphalt to specially formulated and thermally resistant polyester foam resin substrate layers at temperatures up to 500° F.Type: ApplicationFiled: December 2, 2003Publication date: June 10, 2004Inventors: George E. Rotter, John L. Melquist, Robert B. Morland, Donald E. Rubis
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Patent number: 5556926Abstract: Concentrates produced by melt processing a branching agent and a polyester carrier are disclosed. The concentrates are useful in melt processing polyesters. The concentrates contain sufficiently high concentrations of a branching agent to minimize the formation of crosslinked compounds in the concentrates. Process for using the concentrate also are disclosed.Type: GrantFiled: January 30, 1996Date of Patent: September 17, 1996Assignee: Amoco CorporationInventors: George E. Rotter, Weilong Chiang, Boh C. Tsai, John L. Melquist, Cheryl A. Pauer, Stephen Y. Chen
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Patent number: 5536793Abstract: Concentrates produced by melt processing a branching agent and a polyester carrier are disclosed. The concentrates are useful in melt processing polyesters. The concentrates contain sufficiently high concentrations of a branching agent to minimize the formation of crosslinked compounds in the concentrates. Process for using the concentrate also are disclosed.Type: GrantFiled: June 7, 1995Date of Patent: July 16, 1996Assignee: Amoco CorporationInventors: George E. Rotter, Weilong Chiang, Boh C. Tsai, John L. Melquist, Cheryl A. Pauer, Stephen Y. Chen
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Patent number: 5446111Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: May 12, 1994Date of Patent: August 29, 1995Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly
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Patent number: 5340846Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: December 17, 1993Date of Patent: August 23, 1994Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly
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Patent number: 5288764Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: January 29, 1993Date of Patent: February 22, 1994Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly
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Patent number: 5206311Abstract: Blends comprising a polyether sulfone and an imide-containing copolymer of sulfonyl bis(phthalic anhydride), 1,4-bis(p-aminocumyl) benzene and at least one of a selected group of diamine comonomers. The blends display a unique combination of excellent mechanical and thermal properties as well as good solubility and easy melt-fabricability; in addition, the resin components are compatible, and many compositions are unexpectedly miscible.Type: GrantFiled: September 30, 1991Date of Patent: April 27, 1993Assignee: Amoco CorporationInventors: M. Jamal El-Hibri, John L. Melquist
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Patent number: 5191035Abstract: Blends of a polyether sulfone and the polyimide of the dianhydride sulfonyl bis(phthalic anhydride) ("SPAN") and the diamine 1,4-bis(p-aminocumyl)benzene ("BAP"). The blends will comprise from about 10 to about 90 wt % polyether sulfone, preferably greater than about 50 wt % polyether sulfone, based on the total weights of polyether sulfone and polyimide. The blends exhibit good toughness and improved thermal performance over polyether sulfone alone while remaining readily processable, and have good mechanical properties including unexpectedly high stiffness as determined by high tensile modulus values. Blends of this invention also are surprisingly miscible, defined as exhibiting a single Tg value.Type: GrantFiled: September 30, 1991Date of Patent: March 2, 1993Assignee: Amoco CorporationInventors: M. Jamal El-Hibri, James E. Harris, John L. Melquist
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Patent number: 5189115Abstract: Novel polyetherimide copolymers comprising the reaction product of 2,2-bis(3',4'-dicarboxyphenyl)propane dianhydride, an aromatic bis(ether anhydride), and a diamine are described. The polyetherimide copolymers have improved thermal properties, are soluble in conventional solvents, and are compatible with other engineering resins.Type: GrantFiled: November 15, 1990Date of Patent: February 23, 1993Assignee: Amoco CorporationInventor: John L. Melquist
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Patent number: 4992527Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: July 23, 1990Date of Patent: February 12, 1991Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4973659Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzenes are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamono-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: November 30, 1988Date of Patent: November 27, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4973660Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butyltoluene are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butyltoluene which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: November 30, 1988Date of Patent: November 27, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist
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Patent number: 4968780Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butylbenzens are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butylbenzenes which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: April 25, 1990Date of Patent: November 6, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist, Edwin F. Morello, Neal R. Nowicki
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Patent number: 4963648Abstract: Resinous condensation polymers of polycarboxylic acid compounds and aromatic diprimary amines comprising diamino-t-butyltoluene are described. In particular, film-forming polyamides, polyimides and polyamide-imides and their copolymers made using diamino-t-butyltoluene which have amino groups meta or para to each other on a benzene ring are described. These polymers have some solubility in organic solvents such as N-methylpyrrolidone, a high glass transition temperature, excellent thermal stability, and are useful in films, fibers and composites, and in the electronics industry as electrical component substrates, protective coatings, interlevel dielectrics and the like.Type: GrantFiled: April 9, 1990Date of Patent: October 16, 1990Assignee: Amoco CorporationInventors: David J. Fenoglio, Douglas E. Fjare, John L. Melquist
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Patent number: 4929763Abstract: Conversion of alcohol to organic compounds which comprises contacting the alcohol with a heterogeneous catalyst composition comprising at least one member selected from the group consisting of(a) crystalline LnAl.sub.1.67+0.67X (B.sub.4 O.sub.10)O.sub.X, and(b) crystalline LnAl.sub.2.67+0.33Z (B.sub.4 O.sub.11)O.sub.Zwhere Ln is at least one transition element selected from the group consisting of Group IIIB of the Periodic Table, X is a number ranging from 0 to 1, and Z is a number ranging from 0 to 2, each crystalline phase having a characteristic X-ray diffraction pattern.Type: GrantFiled: March 29, 1989Date of Patent: May 29, 1990Assignee: Amoco CorporationInventors: Melvin L. Luetkens, Jr., Steve T. McKenna, John L. Melquist
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Patent number: 4767738Abstract: The present invention is a novel crystalline lead aluminum borate composition characterized by a unique x-ray diffraction pattern.Type: GrantFiled: November 20, 1986Date of Patent: August 30, 1988Assignee: Amoco CorporationInventors: John L. Melquist, Melvin L. Luetkens, Jr.
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Patent number: 4766102Abstract: The present invention relates to a novel silver aluminum borate composition useful as a catalyst for oxidation and/or ammoxidation reactions. More particularly the invention is directed to silver aluminum borate having the general formula (x) Ag.sub.2 O.(y) Al.sub.2 O.sub.3.(z) B.sub.2 O.sub.3 where x, y and z are numbers representing molar amounts of the oxides such that the mole fraction of Ag.sub.2 O, calculated as x/(x+y+z) is from about 0.35 to about 0.60, the mole fraction of Al.sub.2 O.sub.3, calculated as y/(x+y+z) is from about 0.10 to about 0.40, and the mole fraction of B.sub.2 O.sub.3, calculated as z/(x+y+z) is from about 0.10 to about 0.45. The invention is further directed to a method for preparing the catalyst, and to its use as an oxidation or ammoxidation catalyst.Type: GrantFiled: February 20, 1987Date of Patent: August 23, 1988Assignee: Amoco CorporationInventors: Larry Satek, Laura Wilwerding, John L. Melquist, Melvin L. Luetkens
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Patent number: 4499326Abstract: A process to convert a normal butene to isomerized products comprises contacting such alkene under conversion conditions with a hydrogen form AMS-1B borosilicate catalyst composition at a conversion temperature below 250.degree. C.Type: GrantFiled: September 24, 1982Date of Patent: February 12, 1985Assignee: Standard Oil Company (Indiana)Inventor: John L. Melquist
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Patent number: 4210559Abstract: Catalyst for the polymerization of alpha-olefins to polymers having broad molecular weight distributions consisting essentially of an organometallic promoter and the solid reaction product of an alkylaluminum component, at least one titanium(IV) compound, and at least one zirconium(IV) compound.Type: GrantFiled: October 30, 1978Date of Patent: July 1, 1980Assignee: Standard Oil Company (Indiana)Inventors: John L. Melquist, Nicholas K. Kildahl, Peter Fotis
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Patent number: 4199476Abstract: Alpha-olefin polymerization catalyst comprising (A) a solid component which is the reaction product of components comprising (1) an alkylaluminum halide and (2) a liquid reaction product prepared by reacting components comprising a magnesium (II) alkoxide and a titanium (IV) alkoxyhalide in the absence of hydrocarbon diluent; and (B) an organoaluminum promoter.Type: GrantFiled: August 23, 1978Date of Patent: April 22, 1980Assignee: Standard Oil Company (Indiana)Inventors: John L. Melquist, Glen R. Hoff