Patents by Inventor Eliezer M. Rabinovich
Eliezer M. Rabinovich 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: 20160282809Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: ApplicationFiled: June 13, 2016Publication date: September 29, 2016Applicant: PD-LD, Inc.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Patent number: 9377757Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: GrantFiled: July 27, 2015Date of Patent: June 28, 2016Assignee: PD-LD, INC.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Publication number: 20150331389Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: ApplicationFiled: July 27, 2015Publication date: November 19, 2015Applicant: PD-LD, Inc.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Patent number: 9120696Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: GrantFiled: May 7, 2013Date of Patent: September 1, 2015Assignee: PD-LD, INC.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Publication number: 20130240803Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: ApplicationFiled: May 7, 2013Publication date: September 19, 2013Applicant: PD-LD, Inc.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Patent number: 8455157Abstract: The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses. The presence of arsenic increases the figure of merit as measured at a wavelength of interest of a holographic glass with a recorded hologram as compared to a holographic glass with a recorded hologram that does not contain arsenic.Type: GrantFiled: April 28, 2008Date of Patent: June 4, 2013Assignee: PD-LD, Inc.Inventors: Eliezer M. Rabinovich, Boris L. Volodin, Vladimir S. Ban, Elena D. Melnik
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Patent number: 6416235Abstract: The specification describes processes for the manufacture of glass ferrules for optical fiber connectors wherein the glass ferrules have a composition comprising silicon oxide, alkali metal oxide, and aluminum oxide to which is added 1-35% of lead oxide.Type: GrantFiled: September 14, 2000Date of Patent: July 9, 2002Assignee: Fitel USA Corp.Inventor: Eliezer M. Rabinovich
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Patent number: 6151916Abstract: The specification describes processes for the manufacture of glass ferrules for optical fiber connectors wherein the glass ferrules have a composition comprising silicon oxide, alkali metal oxide, and aluminum oxide to which is added 1-35% of lead oxide.Type: GrantFiled: June 2, 1998Date of Patent: November 28, 2000Assignee: Lucent Technologies Inc.Inventor: Eliezer M. Rabinovich
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Patent number: 6007685Abstract: The specification describes sputtering processes for the deposition of silicon dioxide films doped with high levels of oxides or other materials to alter the optical and/or electrical characteristics of the films. Sol gel methods are used to prepare composite sputtering targets of ultra fine mixtures of materials so the composition of the sputtered films replicate the composition of the target.Type: GrantFiled: June 19, 1997Date of Patent: December 28, 1999Assignee: Lucent Technologies Inc.Inventors: John Burnette MacChesney, Aza E. Mishkevich, Henry Miles O'Bryan, Eliezer M. Rabinovich, Ofer Sneh
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Patent number: 5914437Abstract: Cracking in thin sheets of sol-gel-produced material is avoided by use of a support liquid during gelation and drying. Silica glass, as well as other glass and ceramic bodies, is contemplated.Type: GrantFiled: June 23, 1997Date of Patent: June 22, 1999Assignee: Lucent Technologies IncorporatedInventors: Edwin Arthur Chandross, David Wilfred Johnson, Jr., John Burnette MacChesney, Eliezer M. Rabinovich, John Thomson, Jr.
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Patent number: 5897679Abstract: The specification describes techniques for chemically machining extruded glass preforms used to draw glass ferrules for optical fiber connectors. Using the chemical machining technique the dimensions of the preform, including OD, ID, and the OD to ID ratio can be adjusted so that the dimensions of drawn ferrules meet strict dimensional standards. The technique is especially useful for adjusting the dimensions of extruded preforms that have an inherent bow along in the length of the preform. The technique allows adjustment in dimensions while preserving a desired OD to ID ratio. Also described are techniques for reducing eccentricity and/or ellipticity of hollow bore glass preforms.Type: GrantFiled: August 27, 1997Date of Patent: April 27, 1999Assignee: Lucent Technologies Inc.Inventors: Jerry Max Anderson, Aza E. Mishkevich, Eliezer M. Rabinovich
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Patent number: 5598496Abstract: The inventive optical fiber connector comprises a glass ferrule that is strengthened by etching of the outer surface of the ferrule, followed by deposition thereon of a protective layer. Exemplarily, the ferrule is a vitreous silica ferrule drawn from a preform that was made by a sol-gel process. The ferrule is etched in buffered HF, and the protective layer is electroless deposited Ni, with a thin layer of Au thereon. Significant strength increases, exceeding 200%, are obtainable, with the strength being relatively unchanged after even a severe abrasion test.Type: GrantFiled: December 14, 1995Date of Patent: January 28, 1997Assignee: Lucent Technologies Inc.Inventors: Jerry M. Anderson, Robert W. Filas, David W. Johnson, Jr., Norman R. Lampert, Eliezer M. Rabinovich, David N. Ridgway
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Patent number: 5578101Abstract: The disclosed method of making a glass body by a sol/gel process comprises electrochemically assisted release of the gel body from the mold in which the body was formed. More specifically, the method involves gelation of a sol in a mold that comprises a first conductor member, with a second conductor member also being in contact with the sol and/or gel, and causing the flow of a current between the first and second conductor members, with the first member being the cathode. In consequence of the current flow a substantially liquid lubricating layer that facilitates removal of the gel body from the melt exists at the cathode/gel interface.Type: GrantFiled: September 1, 1995Date of Patent: November 26, 1996Assignee: Lucent Technologies Inc.Inventors: Greg E. Blonder, Robert P. Frankenthal, David W. Johnson, Jr., Eliezer M. Rabinovich
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Patent number: 5250096Abstract: Relatively large bodies of low-alkali silicate and other glass can be prepared conveniently by a particulate sol-gel process. The glass comprises at least 85 mole % SiO.sub.2, 1-12 mole % oxide of one or more of Li, Na, K, Rb, Cs, Ti and Zr, 0-6 mole % of oxide of Al, and optionally at most 2.5 mole % of oxide of elements other than Si, Li, Na, K, Rb, Cs, Ti, Zr and Al. The process comprises forming particles from a first sol that comprises Si and one or more of Li, Na, K, Rb, Cs, Ti and Zr, and optionally additionally comprises Al. The process further comprises forming a second sol by dispersing the particles in an aqueous liquid, gelling the second sol, and heat treating the resulting gel body such that the glass results.Type: GrantFiled: April 7, 1992Date of Patent: October 5, 1993Assignee: AT&T Bell LaboratoriesInventors: Allan J. Bruce, Eliezer M. Rabinovich
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Patent number: 4965091Abstract: A sol-gel procedure is described for making display devices with luminescent films. The procedure typically involves hydrolysis and polymerization of an organometallic compound together with selected luminescent ions, and coating of a substrate and then heat treatment to form a polycrystalline layer. The procedure is particularly useful for making cathode ray tubes, expecially those for high power operation because of the excellent luminescence characteristics obtained, good thermal contact from the luminescent layer to faceplate and low cost of the procedure. Also described are the devices obtained which exhibit a layer of complex oxide with network structure much like the corresponding bulk compound.Type: GrantFiled: October 1, 1987Date of Patent: October 23, 1990Assignee: AT&T Bell LaboratoriesInventors: Vincent J. Fratello, Eliezer M. Rabinovich, Joseph Shmulovich
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Patent number: 4840653Abstract: Incorporation of fluorine into a porous silica body, such as an unsintered body produced by a sol-gel method, by VAD or OVPO, reduces or eliminates bubble or pore formation upon re-heating of the glass formed by sintering of the porous material. Effective fluorine concentrations are between 0.01 and 5% by weight. The invention can be used advantageously in producing preforms and optical fiber.Type: GrantFiled: September 19, 1988Date of Patent: June 20, 1989Assignee: American Telephone and Telegraph Company, AT&T Bell LaboratoriesInventor: Eliezer M. Rabinovich
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Patent number: 4707174Abstract: Incorporation of fluorine into a porous silica body, such as an unsintered body produced by a sol-gel method, by VAD or OVPO, reduces or eliminates bubble or pore formation upon re-heating of the glass formed by sintering of the porous material. Effective fluorine concentrations are between 0.01 and 5% by weight. The invention can be used advantageously in producing preforms and optical fiber.Type: GrantFiled: November 20, 1986Date of Patent: November 17, 1987Assignee: American Telephone and Telegraph Company, AT&T Bell LaboratoriesInventors: David W. Johnson, Jr., John B. MacChesney, Eliezer M. Rabinovich, Eva M. Vogel
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Patent number: 4419115Abstract: High-silica glasses are formed by sintering a dried gel at temperatures below the liquidus. The gel may be formed by mixing colloidal silica particles or silica-containing liquids with appropriate liquids. Fragmentation of the gel during drying is advantageously avoided by redispersing the dried gel or sol in a liquid to yield a colloidal suspension which is then gelled, dried, and finally sintered below the liquidus.Type: GrantFiled: July 31, 1981Date of Patent: December 6, 1983Assignee: Bell Telephone Laboratories, IncorporatedInventors: David W. Johnson, Jr., John B. MacChesney, Eliezer M. Rabinovich