Patents by Inventor Eugene P. Boden
Eugene P. Boden 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: 8842351Abstract: A method for storing data including: providing a first substrate having a plurality of micro-holograms therein, the micro-holograms being indicative of the data; providing a second hologram-supporting substrate; illuminating the plurality of micro-holograms in the first substrate through the second substrate, thereby producing a holographic pattern in the second substrate indicative of reflections of the plurality of micro-holograms in the first substrate; providing a third hologram-supporting substrate; and, illuminating the holographic pattern in the second substrate through the third substrate, thereby substantially replicating the plurality of micro-holograms in the first substrate in the third substrate.Type: GrantFiled: June 17, 2008Date of Patent: September 23, 2014Assignee: General Electric CompanyInventors: Brian L. Lawrence, Marc Dubois, Pingfan P. Wu, Joseph L. Smolenski, Xiaolei Shi, Eugene P. Boden
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Patent number: 5804525Abstract: A composition and method is provided for making polycarbonate utilizing an effective amount of a binary catalyst system, comprising a phase transfer catalyst and a tertiary organic amine, as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. for improved phosgene utiliziation.Type: GrantFiled: February 8, 1996Date of Patent: September 8, 1998Assignee: General Electric CompanyInventors: Eugene P. Boden, Larry I. Flowers, Roy R. Odle, Peter D. Phelps, David L. Ramsey, Paul D. Sybert
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Patent number: 5739257Abstract: A composition and method is provided for making polycarbonate utilizing an effective amount of a binary catalyst system, comprising a phase transfer catalyst selected from the group consisting of methyltributylammonium halide and hexabutylbutylenediammonium halide and a tertiary organic amine, as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. Improved phosgene utilization and the substantial elimination of emulsion formation in the interfacial polymerization reactor and the processing units downstream thereof results.Type: GrantFiled: October 21, 1996Date of Patent: April 14, 1998Assignee: General Electric CompanyInventors: Eugene P. Boden, Larry I. Flowers, Peter D. Phelps, David L. Ramsey, Paul D. Sybert
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Patent number: 5530083Abstract: A method is provided for making silicone polycarbonate block copolymers and polycarbonate blends thereof having reduced haze. Silicone polycarbonate block copolymer formation is effected by using a phase transfer catalyst to generate polycarbonate oligomers having at least one terminal haloformate group followed by the late addition of hydroxyaryl terminated polydiorganosiloxane.Type: GrantFiled: July 21, 1994Date of Patent: June 25, 1996Assignee: General Electric CompanyInventors: Peter D. Phelps, Eugene P. Boden, Gary C. Davis, Danielle R. Joyce, James F. Hoover
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Patent number: 5519105Abstract: A composition and method is provided for making polycarbonate utilizing an effective amount of a binary catalyst system, comprising a phase transfer catalyst and a tertiary organic amine, as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. for improved phosgene utilization.Type: GrantFiled: May 10, 1994Date of Patent: May 21, 1996Assignee: General Electric CompanyInventors: Eugene P. Boden, Larry I. Flowers, Roy R. Odle, Peter D. Phelps, David L. Ramsey, Paul D. Sybert
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Patent number: 5391692Abstract: A method is provided for making polycarbonate utilizing an effective amount of a phase transfer catalyst, such as tetrabutylammonium bromide as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. Improved phosgene utilization is achieved.Type: GrantFiled: February 2, 1994Date of Patent: February 21, 1995Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps, David L. Ramsey, Paul D. Sybert, Larry I. Flowers, Roy R. Odle
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Patent number: 5360911Abstract: A novel process is disclosed for producing stilbazolium salts. Said novel process employs a heterocyclic amine catalyst, such as pyrrolidine, an alkylated pyridine salt and a substituted benzaldehyde which unexpectedly results in increased reaction rates and product yields.Type: GrantFiled: June 17, 1993Date of Patent: November 1, 1994Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps, Kevin R. Stewart
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Patent number: 5332827Abstract: Deuterated organic salts useful in nonlinear optical applications are disclosed herein. More particularly, optoelectronic devices and systems are prepared from said deuterated organic salts and the preferred salt is perdeuterated 4'-dimethylamino-4-methylstilbazolium p-toluenesulfonate.Type: GrantFiled: August 23, 1993Date of Patent: July 26, 1994Assignee: General Electric CompanyInventors: Kevin R. Stewart, Eugene P. Boden, Christopher P. Yakymyshyn
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Patent number: 5323482Abstract: Deuterated organic salts useful in nonlinear optical applications are disclosed herein. More particularly, optoelectronic devices and systems are prepared from said deuterated organic salts and the preferred salt is perdeuterated 4'-dimethylamino-4-methylstilbazolium p-toluenesulfonate.Type: GrantFiled: May 27, 1993Date of Patent: June 21, 1994Assignee: General Electric CompanyInventors: Kevin R. Stewart, Eugene P. Boden, Christopher P. Yakymyshyn
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Patent number: 5300624Abstract: A method is provided for making flame retardant polycarbonates by phosgenating a mixture of bisphenols having up to about 50 mole % of tetrahalobisphenols, such as tetrabromobisphenols. There is employed a mixture of a phase transfer catalyst and a tertiary organic amine to provide high molecular weight copolymer without excessive phosgene usage.Type: GrantFiled: May 24, 1993Date of Patent: April 5, 1994Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps
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Patent number: 5300623Abstract: A method is provided for making polycarbonate by phosgenating a mixture of bisphenol and phenolic chain-stopper under interfacial reaction conditions in the presence of a phase transfer catalyst. A polycarbonate is obtained which is substantially free of diarylcarbonate.Type: GrantFiled: May 24, 1993Date of Patent: April 5, 1994Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps
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Patent number: 5274068Abstract: Polycarbonates are prepared from dihydric phenols, carbonate precursors, an aliphatic dicarboxylic acid having from 4 to 8 carbon atoms, and a catalyst selected from the group consisting of phase transfer catalysts and trialkylamines, wherein the initial pH is maintained from 3 to 8 until 40 to 90 percent of the total amount of carbonate precursor is added, and the pH is then raised to 10-12 until the reaction is complete.Type: GrantFiled: April 23, 1992Date of Patent: December 28, 1993Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps
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Patent number: 5194984Abstract: 4'-Dimethylamino-4-methylstilbazolium methanesulfonate is prepared by the reaction of methyl methanesulfonate with 4-picoline followed by condensation with p-dimethylaminobenzaldehyde. Its hydrated form has second harmonic generation optical properties, but this is not true of the anhydrous form. Thus, the hydrated form is useful in the production of optical waveguides, spatial light modulators and the like.Type: GrantFiled: June 10, 1991Date of Patent: March 16, 1993Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps, Christopher P. Yakymyshyn, Kevin R. Stewart
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Patent number: 5191038Abstract: Branched polycarbonates are prepared by melt equilibration of aromatic cyclic polycarbonate oligomes with a polyhydric phenol having more than two hydroxy groups per molecule, preferably 1,1,1-tris-(4-hydroxyphenyl)ethane, in the presence of a carbonate equilibration catalyst, preferably tetrabutylammonium tetraphenylborate. In an additional embodiment of the invention, a linear aromatic polycarbonate is added to the reaction mixture. Branched polycarbonates prepared according to this invention have high melt strength and high shear sensitivity characteristics and are useful in extrusion and injection molding processing applications and particularly useful in blow molding applications for preparing relatively large articles and panels.Type: GrantFiled: July 26, 1991Date of Patent: March 2, 1993Assignee: General Electric CompanyInventors: Herman O. Krabbenhoft, Eugene P. Boden
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Patent number: 5142088Abstract: Ester polyphenols such as the tris(bisphenol A) ester of trimellitic acid are prepared by the reaction of the corresponding aromatic poly(acyl halide) with a dihydroxyaromatic compound such as bisphenol A. They may be employed in the preparation of branched polycarbonates via chloroformate oligomer compositions.Type: GrantFiled: January 28, 1991Date of Patent: August 25, 1992Assignee: General Electric CompanyInventors: Peter D. Phelps, Eugene P. Boden, Paul W. Buckley
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Patent number: 5136018Abstract: Macrocyclic polyarylate oligomers containing a mixture of isophthalate and terephthalate moieties are prepared by reaction of a mixture of isophthaloyl and terephthaloyl chloride with one or more bisphenols under specific reaction conditions. They are characterized by a reduced degree of crystallinity and therefore lower processing temperatures than the corresponding isophthalate oligomers.Type: GrantFiled: November 19, 1990Date of Patent: August 4, 1992Assignee: General Electric CompanyInventors: Eugene P. Boden, Peter D. Phelps
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Patent number: 5100804Abstract: The molar concentration of chloroformate in an organic chloroformate solution is determined by adding an excess of a monohydroxyaromatic compound, water and a catalytic amount of a 4-dialkylaminopyridine such as 4-dimethylaminopyridine, titrating with aqueous base and taking as the end point the volume of base which achieves complete conversation of chloroformate groups to monoaromatic carbonate groups, as shown by a rapid rise in the pH of the aqueous phase of more than two points to a value in the range of 7-9. This method is particularly applicable to the determination of bischloroformate molar concentration in systems to be converted to cyclic polycarbonate oligomers. Conversion may be effected by condensation in the presence of a trialkylamine and aqueous base in the amount of about 3 moles per mole of bischloroformate.Type: GrantFiled: March 14, 1991Date of Patent: March 31, 1992Assignee: General Electric CompanyInventors: Daniel J. Brunelle, David K. Bonauto, Eugene P. Boden
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Patent number: 5097008Abstract: Branched polycarbonates are prepared by melt equilibration of aromatic cyclic polycarbonate oligomers with a polyhydric phenol having more than two hydroxy groups per molecule, preferably 1,1,1-tris-(4-hydroxyphenyl)ethane, in the presence of a carbonate equilibration catalyst, preferably tetrabutylammonium tetraphenylborate. In an additional embodimetn of the invention, a linear aromatic polycarbonate is added to the reaction mixture. Branched polycarbonates prepared according to this inventin have high melt strength and high shear sensitivity characteristics and are useful in extrusion and injection molding processing applications and particularly useful in blow molding applications for preparing relatively large articles and panels.Type: GrantFiled: May 10, 1990Date of Patent: March 17, 1992Assignee: General Electric CompanyInventors: Herman O. Krabbenhoft, Eugene P. Boden
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Patent number: 5094553Abstract: Optical waveguides comprise as core and cladding materials a chemical compound in two different crystalline forms with different indices of refraction. Preferably, the non-linear form is anhydrous and the linear form is a hydrate thereof, whereupon the core material can be prepared by selective heating of the cladding material as by a laser beam. A preferred compound is 4'-dimethylamino-4-methylstilbazolium p-toluenesulfonate.Type: GrantFiled: November 28, 1990Date of Patent: March 10, 1992Assignee: General Electric CompanyInventors: Christopher P. Yakymyshyn, Eugene P. Boden, Peter D. Phelps, Kevin R. Stewart
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Patent number: RE34431Abstract: Macrocyclic oligomers, including polycarbonates, polyesters, polyamides, polyimides, polyetherketones and polyethersulfones, are conveniently prepared from various spiro(bis)indane compounds, especially the 6,6'-difunctional 3,3',3'-tetramethylspiro(bis)indanes. The macrocyclic oligomers may be conveniently converted to linear polymers.Type: GrantFiled: May 8, 1992Date of Patent: November 2, 1993Assignee: General Electric CompanyInventors: Daniel J. Brunelle, Thomas L. Guggenheim, James A. Cella, Thomas L. Evans, Luca P. Fontana, Gary R. Faler, James M. Fukuyama, Eugene P. Boden, Jonathan D. Rich, Thomas G. Shannon, Sharon J. McCormick, Philip J. McDermott, Alice M. Colley, Joseph W. Guiles