Patents by Inventor Robert A. DeVries
Robert A. DeVries 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: 20030215175Abstract: The present invention describes a method and devices for scaling the capability of a re-configurable add/drop multiplexer while not affecting the express traffic that goes through it. The invention allows field upgradability of re-configurable add/drop multiplexers with pre-selected wavelengths or wavebands such that other wavelengths or bands can be added or removed without service interruptions. This will then allow for a pay-as-you-grow model and therefore alleviate the need for having costly OADMs with a large number of addressable channels. In addition, in one of the embodiments we will describe a method for removing single point of failure through design, which is highly desirable from a network maintenance perspective.Type: ApplicationFiled: March 14, 2003Publication date: November 20, 2003Inventors: Tino Alavie, Cyrus Etemad Moghadam, Ming Gang Xu, Robert DeVries
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Patent number: 6593155Abstract: This invention is a method comprising preparing a sample by coating a thin film of a precursor material, which is free of fluorescent probe molecules onto a substrate and subjecting the precursor material to conditions to attempt to cause cure of the precursor to an organic, aromatic, polymer having a dielectric constant of less than 3.0, exposing the sample to radiation having a wavelength in the range of 200 to 500 nm, detecting a resulting emission of radiation, and comparing the emission to the emission for a known cured, non-oxidized standard for the polymer.Type: GrantFiled: December 28, 2000Date of Patent: July 15, 2003Assignee: Dow Global Technologies Inc.Inventors: Carol E. Mohler, Robert A. Devries
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Publication number: 20020086429Abstract: This invention is a method comprising preparing a sample by coating a thin film of a precursor material, which is free of fluorescent probe molecules onto a substrate and subjecting the precursor material to conditions to attempt to cause cure of the precursor to an organic, aromatic, polymer having a dielectric constant of less than 3.0, exposing the sample to radiation having a wavelength in the range of 200 to 500 nm, detecting a resulting emission of radiation, and comparing the emission to the emission for a known cured, non-oxidized standard for the polymer.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Inventors: Carol E. Mohler, Robert A. Devries
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Patent number: 6361926Abstract: The invention is a curable cyclobutarene based polymer comprising acid functional pendant groups. The cured polymer displays excellent qualities of toughness, adhesion, dielectric constant, and low stress. The preferred system is soluble in an aqueous base and can be used to generate patterned films with excellent resolution without the need to handle organic developer solvents.Type: GrantFiled: October 23, 1998Date of Patent: March 26, 2002Assignee: The Dow Chemical CompanyInventors: Ying H. So, Robert A. DeVries, Mitchell G. Dibbs, Robert L. McGee, Edward O. Shaffer, II, Michael J. Radler, Richard P. DeCaire
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Patent number: 5965679Abstract: An oligomer, uncured polymer or cured polymer comprising the reaction product of one or more polyfunctional compounds containing two or more cyclopentadienone groups and at least one polyfunctional compound containing two or more aromatic acetylene groups wherein at least some of the polyfunctional compounds contain three or more reactive groups. Such oligomers and uncured polymers may be cured to form cured polymers which are useful as dielectrics in the microelectronics industry, especially for dielectrics in integrated circuits.Type: GrantFiled: April 1, 1997Date of Patent: October 12, 1999Assignee: The Dow Chemical CompanyInventors: James P. Godschalx, Duane R. Romer, Ying Hung So, Zenon Lysenko, Michael E. Mills, Gary R. Buske, Paul H. Townsend, III, Dennis W. Smith, Jr., Steven J. Martin, Robert A. DeVries
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Patent number: 5567835Abstract: This invention relates to a novel process for preparing vinylsiloxane-BCBs (vinylsiloxane-benzocyclobutenes) comprising reacting a hydrolyzable hydrosilating reagent with an acetylene-BCB in the presence of a catalyst, then hydrolyzing the hydrolyzable vinylsilane-BCB to form a vinylsiloxane-BCB.Type: GrantFiled: October 27, 1995Date of Patent: October 22, 1996Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Edmund J. Stark
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Patent number: 5532817Abstract: A method for determining the configuration of a resin portion of an article comprising exposing the article to a light source at a first wavelength and measuring emission of light at a second, different wavelength; wherein the resin contains a moiety containing a structure of the formula: ##STR1## or a moiety which is a reaction product of said moiety in a quantity sufficient to impart fluorescent properties to said resin.Type: GrantFiled: October 3, 1994Date of Patent: July 2, 1996Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Reed A. Shick, G. Thomas Wells, Joseph N. Carr
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Patent number: 5491250Abstract: A crude vinylically unsaturated product formed from a palladium-complex-catalyzed reaction of a reactant halide selected from the group consisting of aryl, allyl, vinyl, and benzyl halides, and a reactant olefin having a vinylic hydrogen, wherein the reaction is carried out in the presence of a hydrogen halide acceptor, is purified by first contacting the crude product with a base that is stronger than the hydrogen halide acceptor, then heating the stronger base-contacted product. The purified product shows a marked reduction in concentration bromine and palladium impurities. The product can then be further purified by such methods as chromatography, crystallization, or distillation to achieve a product that is more suitable for applications where very low levels of inorganic impurities are required.Type: GrantFiled: March 23, 1995Date of Patent: February 13, 1996Assignee: The Dow Chemical CompanyInventors: Edmund J. Stark, John A. Schultz, Ernest L. Ecker, Robert A. DeVries
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Patent number: 5416233Abstract: This invention relates to a novel process for preparing vinylsilane-BCBs (vinylsilane-benzocyclobutenes) comprising reacting a hydrosilating reagent with an acetylene-BCB in the presence of a catalyst.The invention also relates to a novel mixture of isomers of DVS-bisBCB (1,3-divinyl-1,1,3,3-tetramethyldisiloxane bisbenzocyclobutene) as well as novel partially or fully cured polymers derived from the vinylsilane BCBs.Type: GrantFiled: January 25, 1994Date of Patent: May 16, 1995Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Edmund J. Stark
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Patent number: 5310809Abstract: An olefinic polymer is grafted with a vinyl arylcyclobutene such as 4-vinylbenzocyclobutene. The arylcyclobutene grafted olefinic polymers are useful in a number of industrial applications including electronics, and as coatings, membranes, fibers, structural composites, adhesives, and wrapping and packaging films.Type: GrantFiled: May 20, 1993Date of Patent: May 10, 1994Assignee: The Dow Chemical CompanyInventors: Raul A. Pabon, Jr., Robert A. DeVries
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Patent number: 5264646Abstract: A process for preparing a vinylically-unsaturated product compound comprises reacting a halogenated organic compound with a hydrolytically-stable, vinylically-unsaturated precursor compound in the presence of (a) a homogeneous zerovalent palladium catalyst complex, (b) an organic hydrogen halide acceptor and (c) a diluent, wherein the diluent is water or an aqueous solution containing up to 95% by volume of an organic solvent. The halogenated organic compound is selected from aryl halides, benzyl halides or vinylic halides. The hydrolytically-stable, vinylically-unsaturated precursor compound is selected from organosilicon compounds, hydrocarbon compounds or compounds containing at least one of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorus atom or a combination thereof.Type: GrantFiled: March 28, 1991Date of Patent: November 23, 1993Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Gregory F. Schmidt, Hughie R.* Frick, Bonnie Frick
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Patent number: 5248829Abstract: This invention is a process for the production of acetylated aromatic products, including acetyl benzoeyclobutenes, in one step and in high yield. The process comprises contacting an aryl halide with an alkyl vinyl ether in the presence of a zerovalent palladium catalyst complex and a hydrogen halide acceptor in a aqueous solvent mixture containing at least about one molar equivalent of water based on moles of the aryl halide.Type: GrantFiled: July 9, 1992Date of Patent: September 28, 1993Assignee: The Dow Chemical CompanyInventor: Robert A. DeVries
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Patent number: 5243068Abstract: A process for preparing a vinylically-unsaturated product compound comprises reacting a halogenated organic compound with a hydrolytically-stable, vinylically-unsaturated precursor compound in the presence of (a) a homogeneous zerovalent palladium catalyst complex, (b) an inorganic hydrogen halide acceptor and (c) a diluent, wherein the diluent is water or an aqueous solution containing up to 95% by volume of an organic solvent. The halogenated organic compound is selected from aryl halides, benzyl halides or vinylic halides. The hydrolytically-stable, vinylically-unsaturated precursor compound is selected from hydrocarbon compounds or compounds containing at least one of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorus atom or a combination thereof.Type: GrantFiled: May 1, 1992Date of Patent: September 7, 1993Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Hughie R. Frick, deceased
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Patent number: 5227536Abstract: A process for preparing a 3- or 4-hydroxybenzocyclobutene comprises reacting a 3- or 4-halogenzocyclobutene reactant with an alkali metal hydroxide by heating in an aqueous alcohol medium at a temperature from about 50.degree. C. to a temperature at which dimerization or oligomerization of a benzocyclobutene reactant or product is a significant side reaction, in the presence of a metal-containing catalyst, for a time sufficient to convert the halobenzocyclobutene reactant to the hydroxybenzocyclobutene product.Type: GrantFiled: July 30, 1992Date of Patent: July 13, 1993Assignee: The Dow Chemical CompanyInventors: Pulikkottil J. Thomas, Robert A. DeVries, R. Garth Pews, Daniel A. Batzel
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Patent number: 5138081Abstract: A process for purifying an impure vinylically-unsaturated organosilicon product compound prepared by reaction between a vinylically-unsaturated organosilicon precursor and a halogenated organic compound in the presence of a homogeneous zerovalent palladium catalyst complex, the catalyst complex including an organophosphine or organoarsine ligand, in the presence of a hydrogen halide acceptor in an essentially anhydrous diluent, comprising treating a mixture containing the impure vinylically-unsaturated organosilicon product compound with a peroxide for a time sufficient to oxidize organophosphine or organoarsine impurities present in a mixture being treated. The peroxide can be selected from aqueous hydrogen peroxide or organic peroxides. The thus-treated mixture can be further treated by chromatography over silica gel or alumina. In optional embodiments, chromatography over silica gel or alumina can precede treatment with the peroxide.Type: GrantFiled: April 30, 1991Date of Patent: August 11, 1992Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Mary L. Ash, Hughie R. Frick, deceased
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Patent number: 5136069Abstract: A process for preparing a vinylically-unsaturated product compound comprises reacting a halogenated organic compound with a hydrolytically-stable, vinylically-unsaturated precursor compound in the presence of (a) a homogeneous zerovalent palladium catalyst complex, (b) an inorganic hydrogen halide acceptor and (c) diluent, wherein the diluent is water or an aqueous solution containing up to 95% by volume of an organic solvent. The halogenated organic compound is selected from aryl halides, benzyl halides or vinylic halides. The hydrolytically-stable, vinylically-unsaturated precursor compound is selected from hydrocarbon compounds or compounds containing at least one of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorus atom, silicon atom or a combination thereof.Type: GrantFiled: March 28, 1991Date of Patent: August 4, 1992Assignee: The Dow Chemical CompanyInventors: Robert A. DeVries, Hughie R. Frick, deceased
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Patent number: 5077367Abstract: Syndiotactic homopolymers of an arylcyclobutene functional monomer and syndiotactic copolymers of an arylcyclobutene functional monomer and a vinylaromatic monomer are prepared by conducting the polymerization in the presence of a catalytic amount of a suitable coordination catalyst such as the reaction product of polymethylaluminoxane and a transition metal compound.Type: GrantFiled: June 22, 1990Date of Patent: December 31, 1991Assignee: The Dow Chemical CompanyInventors: Richard E. Campbell, Jr., Robert A. DeVries
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Patent number: 4830846Abstract: A method for the separation of anhydrous HCl and HBr from mixtures of the two acids comprising treating the mixture with a hindered pyridine to form a mixture of hindered pyridine salts of the acids, and heating the mixture of salts to a temperature at which thermal cleavage of at least the hydrochloride salt is induced. The hindered pyridines are defined as aromatic compounds having one or more nitrogen atoms in an aromatic ring, or a polymer with pendant aromatic moieties having one or more nitrogens in an aromatic ring, having an appropriate degree of steric hindrance such that the salt formed by the nitrogen atom of the aromatic compound and a strong protic base will undergo dissociation to the aromatic compound and the protic acid at a temperature below the decomposition temperature of the aromatic compound. The formation of salts and their cleavage can be done as either a one-step or two-step process.Type: GrantFiled: January 29, 1988Date of Patent: May 16, 1989Assignee: The Dow Chemical CompanyInventors: Herbert C. Jackson, Jr., Robert A. DeVries, Hughie R. Frick
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Patent number: 4640831Abstract: The invention is a process for the recovery of protic acids from a medium which comprises(a) contacting a medium containing a protic acid with a reversible base under conditions such that the protic acid and the reversible base form a salt; and(b) exposing the salt of the protic acid and the reversible base to temperatures at which the salt dissociates liberating the protic acid.Type: GrantFiled: December 18, 1984Date of Patent: February 3, 1987Assignee: The Dow Chemical CompanyInventor: Robert A. DeVries
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Patent number: 4582929Abstract: This invention is a process for the carbonylation of an organic halide to prepare a carbonyl-containing compound, and recovery of halogen values in a useful form which comprises(a) contacting an organic halide with carbon monoxide and an esterifying agent, a primary or secondary amine, or hydrogen gas, in an inert organic solvent in the presence of a water-insoluble tertiary amine or pyridine ring-containing compound, and a catalytic amount of a Group VIII metal catalyst, under conditions such that an organic ester, amide or aldehyde is prepared and the halide generated in the process forms a salt with tertiary amine or pyridine compound wherein the halide is bromine or iodine;(b) separating the organic ester, amide or aldehyde from the reaction mixture which contains the tertiary amine or pyridine compound-halide salt;(c) contacting the reaction mixture containing the tertiary amine or pyridine compound-halide salt mixture with a concentrated aqueous solution of an alkali metal base or alkaline earth metal bType: GrantFiled: December 24, 1984Date of Patent: April 15, 1986Assignee: The Dow Chemical CompanyInventor: Robert A. DeVries