Patents by Inventor Nicholas F. Borrelli
Nicholas F. Borrelli 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: 5616159Abstract: High purity fused silica glass which is highly resistant to optical damage by ultraviolet radiation in the laser wavelength of about 300 nm or shorter is produced. In particular, a fused silica optical member or blank exhibits substantially no optical damage up to 10.sup.7 pulses (350 mJ/cm.sup.2) at the KrF laser wavelength region of about 248 nm, and at the ArF laser wavelength region of about 193 nm.Type: GrantFiled: April 14, 1995Date of Patent: April 1, 1997Assignee: Corning IncorporatedInventors: Roger J. Araujo, Nicholas F. Borrelli, Christine L. Hoaglin, Charlene Smith
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Patent number: 5537505Abstract: The present invention is directed to the preparation of two groups of transparent glass-ceramics exhibiting high optical clarity and containing essentially only one crystal phase. The first group consists essentially, in cation percent, of______________________________________ SiO.sub.2 20-35 PbF.sub.2 19-23 AlO.sub.1.5 10-20 YF.sub.3 3-7, CdF.sub.2 19-34 ______________________________________and the second group consists essentially, in cation percent, of ______________________________________ SiO.sub.2 20-35 PbF.sub.2 15-25 AlO.sub.1.5 10-20 YF.sub.3 3-7 CdF.sub.2 21-31 ZnF.sub.2 3-7. ______________________________________These glass-ceramics may be used to fabricate optical waveguide fibers. Also when doped with certain rare earth elements, notably Pr, Er, and Dy, the glass-ceramic materials may be used to fabricate optical amplifiers and lasers.Type: GrantFiled: April 28, 1995Date of Patent: July 16, 1996Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Lauren K. Cornelius, Mark A. Newhouse, Paul A. Tick
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Patent number: 5534321Abstract: This invention is directed to the fabrication of substrates for rigid information disks for use in a magnetic storage device, the surface of the substrate comprising a smooth area and a low friction area. Conveniently, the substrate will comprise a photonucleable glass wherein the low friction area will have a controlled textured surface.Type: GrantFiled: January 3, 1994Date of Patent: July 9, 1996Assignee: Corning IncorporatedInventors: James W. Alpha, Nicholas F. Borrelli
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Patent number: 5517356Abstract: A glass article that is effective in polarizing radiation in the range of 400-700 nm and method of making, the glass having an R.sub.2 O--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 base glass composition, a precipitated crystal phase consisting of a halide selected from the group composed of cuprous, cadmium and mixed cuprous-cadmium halides, the crystals in the crystal phase being elongated, and a portion of the crystals near the surface of the article being at least partially reduced to colloidal copper, whereby the article exhibits permanent dichroic behavior and has a polarization efficiency across the entire wavelength range of 400-700 nm of at least 0.80.Type: GrantFiled: July 1, 1994Date of Patent: May 14, 1996Assignee: Corning IncorporatedInventors: Roger J. Araujo, Nicholas F. Borrelli, Josef C. Lapp, David W. Morgan
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Patent number: 5483628Abstract: The present invention is directed to the preparation of two groups of transparent glass-ceramics exhibiting high optical clarity and containing essentially only one crystal phase. The first group consists essentially, in cation percent, of______________________________________ SiO.sub.2 20-35 PbF.sub.2 19-23 AlO.sub.1.5 10-20 YF.sub.3 3-7, CdF.sub.2 19-34 ______________________________________and the second group consists essentially, in cation percent, of ______________________________________ SiO.sub.2 20-35 PbF.sub.2 15-25 AlO.sub.1.5 10-20 YF.sub.3 3-7 CdF.sub.2 21-31 ZnF.sub.2 3-7.Type: GrantFiled: November 25, 1994Date of Patent: January 9, 1996Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Lauren K. Cornelius, Mark A. Newhouse, Paul A. Tick
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Patent number: 5468692Abstract: This invention is directed to glass compositions particularly designed for use in rear projection tube applications. The glass compositions are essentially free from ZnO, PbO and other easily reducible metal oxides other than Sb.sub.2 O.sub.3 and are essentially colorless. The glasses exhibit essentially no browning discoloration upon being exposed to high voltage electrons, linear coefficients of thermal expansion (25.degree.-300.degree. C.) between about 97-100.times.10.sup.-7 .degree. C., annealing points not lower than about 475.degree. C., strain points not lower than about 440.degree. C., electrical resistivities expressed as Log R greater than 9 at 250.degree. C. and greater than 7 at 350.degree. C., and liquidus temperatures below about 1100.degree. C. The glass compositions consist essentially, expressed in terms of weight percent on the oxide basis, of______________________________________ SiO.sub.2 55-60 K.sub.2 O 5.75-10 Al.sub.2 O.sub.3 1-3 Na.sub.2 O + K.sub.2 O 10.5-14 ZrO.sub.2 0-3.5 K.sub.Type: GrantFiled: December 19, 1994Date of Patent: November 21, 1995Assignee: Corning IncorporatedInventors: Heather Boek, Nicholas F. Borrelli, George F. Hares
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Patent number: 5449645Abstract: This invention is directed to the production of glass bodies containing crystallites of PbS and/or PbSe. The crystallite-containing bodies are formed by the thermal crystallization in situ of glass bodies having compositions essentially free from CdO and consisting essentially, expressed in terms of weight percent on the oxide basis except for fluorine, sulfur, and selenium which are expressed in terms of weight percent on the elemental basis, of______________________________________ SiO.sub.2 58-65 RO 0-15 Na.sub.2 O 10-15 F 1-3.5 ZnO 5-17 S 0-3 Al.sub.2 O.sub.3 0.5-5 Se 0-3 PbO 3-6 S + Se 1-3 ______________________________________wherein RO consists of at least one alkaline earth metal oxide in the indicated proportions selected from the group consisting of 0-5% BeO, 0-5% MgO, 0-15% CaO, 0-10% SrO, and 0-10% BaO.Type: GrantFiled: August 26, 1994Date of Patent: September 12, 1995Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, George B. Hares, Dennis W. Smith
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Patent number: 5430573Abstract: A UV-absorbing, polarizing glass article and method of making, the glass having an R.sub.2 O-B.sub.2 O.sub.3 -SiO.sub.2 base glass composition, a sharp spectral cut-off at about 400 nm, a precipitated crystal phase consisting of a halide selected from the group composed of cuprous, cadmium and mixed cuprous-cadmium halides, the crystallites in the crystal phase being elongated, and a portion of the crystallites near the surface of the article being at least partially reduced to colloidal copper, whereby the article exhibits permanent dichroic behavior.Type: GrantFiled: December 15, 1993Date of Patent: July 4, 1995Assignee: Corning IncorporatedInventors: Roger J. Araujo, Nicholas F. Borrelli, Josef C. Lapp, David W. Morgan
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Patent number: 5375012Abstract: A birefringent waveplate is composed of an integral, transparent, glass body having a thermally developed dispersed phase therein composed of particles having a high aspect ratio and being oriented and aligned in one direction, whereby the glass body is rendered birefringent so that polarized components of light transmitted through the glass body have a phase shift introduced.Type: GrantFiled: October 13, 1992Date of Patent: December 20, 1994Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Thomas P. Seward, III
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Patent number: 5275979Abstract: Thermally induced color is developed in a glass article containing a silver halide crystal phase by including in the glass batch a thermal reducing agent, retaining the thermal reducing agent in its lower valence state while meltinq the batch and forming the glass article and subsequently heat treating the article to partially reduce the silver halide crystal phase.Type: GrantFiled: October 30, 1992Date of Patent: January 4, 1994Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, David W. Morgan, Michel Prassas, Dennis W. Smith
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Patent number: 5252524Abstract: This invention is directed to a glass containing elongated silver halide crystals selected from the group consisting of AgCl, AgBr, AgI, and mixtures thereof which is capable of polarizing radiation in the visible portion of the radiation spectrum and which does not exhibit photochromism when exposed to radiation in the ultraviolet/visible portions of the radiation spectrum, wherein the composition of the glass is essentially free of copper and includes an amount of CeO.sub.2 effective to retain the silver in the glass composition in the oxidized state.Type: GrantFiled: October 16, 1992Date of Patent: October 12, 1993Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Josef C. Lapp, David W. Morgan
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Patent number: 5212120Abstract: A photosensitive borosilicate glass which consists essentially in calculated weight percent on an oxide basis of 20-80% SiO.sub.2, 8-40% B.sub.2 O.sub.3, 0-6% Li.sub.2, 0-28% Na.sub.2, 0-25% K.sub.2 O, the total Na.sub.2 O+K.sub.2 O being 10-28%, 0-18% Al.sub.2 O.sub.3 and minor amounts of photosensitizing agents silver, cerium oxide, antimony oxide and bromine and/or chlorine, the cation ratio of R.sub.2 O--Al.sub.2 O.sub.3 to B.sub.2 O.sub.3 being at least 0.6.Type: GrantFiled: June 19, 1992Date of Patent: May 18, 1993Assignee: Corning IncorporatedInventors: Roger J. Araujo, Nicholas F. Borrelli, Dennis W. Smith
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Patent number: 5168079Abstract: This invention relates to glasses exhibiting very high optical non-linearity, very high Verdet constants, very high electro-optic constants, and excellent transmissions of infrared radiation. The glasses consist essentially, in cation percent, of:______________________________________ T10.sub.0.5 20-55 GeO.sub.2 0-17 BiO.sub.1.5 0-67 PbO 0-40 GaO.sub.1.5 13-30 T10.sub.0.5 + BiO.sub.1.5 + PbO 70-87 SiO.sub.2 0-5 TeO.sub.Type: GrantFiled: October 31, 1991Date of Patent: December 1, 1992Assignee: Corning IncorporatedInventors: Bruce G. Aitken, Nicholas F. Borrelli
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Patent number: 5148510Abstract: This invention is drawn to heavy metal oxide glasses exhibiting high nonlinear susceptibility and infrared transmission consisting essentially, in weight percent, of 42-48% PbO, 33-44% Bi.sub.2 O.sub.3, 10-15% Ga.sub.2 O.sub.3, and up to 15% total of at least one member of the group consisting of up to 5% SiO.sub.2 and/or GeO.sub.2 and up to 15% Tl.sub.2 O. This invention also comprehends the fabrication of light guiding fibers from those glasses.Type: GrantFiled: November 18, 1991Date of Patent: September 15, 1992Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, William H. Dumbaugh, Jr., Doublas W. Hall, Josef C. Lapp, Mark A. Newhouse, Mark L. Powley, David L. Weidman
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Patent number: 5093287Abstract: This invention is drawn to heavy metal oxide glasses exhibiting high nonlinear susceptibility and infrared transmission consisting essentially, in weight percent, of 42-48% PbO, 33-44% Bi.sub.2 O.sub.3, 10-15% Ga.sub.2 O.sub.3, and up to 15% total of at least one member of the group consisting of up to 5% SiO.sub.2 and/or GeO.sub.2 and up to 15% Tl.sub.2 O. This invention also comprehends the fabrication of light guiding fibers from those glasses.Type: GrantFiled: November 28, 1990Date of Patent: March 3, 1992Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, William H. Dumbaugh, Jr., Douglas W. Hall, Josef C. Lapp, Mark A. Newhouse, Mark L. Powley, David L. Weidman
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Patent number: 5062877Abstract: This invention is directed to a method of forming optical devices composed of a photonucleable, crystallizable, lithium silicate glass body having at least one glass lens integral with and rising above at least one surface thereof, the lens being surrounded by a crystallized glass matrix, and optical devices produced by such method. The inventive method comprises subjecting the crystallized body to an ion exchange reaction wherein sodium and/or potassium ions from an external source are exchanged for lithium ions within the surface of the glass lens, the exchange reaction being conducted at a temperature of about 25.degree.-125.degree. C. above the annealing point of the glass for a time sufficient to produce a lens having an axial height in excess of 100% greater than that of lenses produced solely by selectively crystallizing a photonucleable, lithium silicate glass body.Type: GrantFiled: April 9, 1990Date of Patent: November 5, 1991Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Dennis W. Smith
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Patent number: 5019538Abstract: This invention is directed to photosensitively opacifiable glasses consisting essentially, in weight percent, of about 14-18% Na.sub.2 O, 0-6% Zno, 6-12% Al.sub.2 O.sub.3, 0-5% B.sub.2 O.sub.3, 0-0.2% Sb.sub.2 O.sub.3, 0-0.1% SnO, 65-72% SiO.sub.2, and 0.007-0.04% Ag, 0.008-0.05% CeO.sub.2, 0.7-1.25% Br, and 1.5-2.5% F as analyzed in the glass, the sum of those components constituting at least 90% of the total composition, which, through an exposure to ultraviolet radiation, followed by a three-step heat treatment, and then a re-exposure to ultraviolet radiation at an elevated temperature, can be converted into a colored opal glass.Type: GrantFiled: November 13, 1989Date of Patent: May 28, 1991Assignee: Coring IncorporatedInventors: Nicholas F. Borrelli, Dennis W. Smith
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Patent number: 4979975Abstract: Photosensitively opacifiable glasses requiring very short exposures to ultraviolet radiation to effect the development of opacity are processed by heating to nucleate Ag followed by cooling to nucleate NaF on the Ag followed by heating to grow the NaF. The glasses contain, expressed in terms of weight percent on the oxide basis, about 14-18% Na.sub.2 O, 0-6% ZnO, 6-12% Al.sub.2 O.sub.3, 0-5% B.sub.2 O.sub.3, 65-72% SiO.sub.2, and 0-0.2% Sb.sub.2 O.sub.3, and 0.007-0.04% Ag, 0.008-0.05% CeO.sub.2, 0.7-1.25% Br, and 1.5-2.5% F as analyzed in the glass, the sum of those components are at least 90% of the total composition.Type: GrantFiled: August 7, 1989Date of Patent: December 25, 1990Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, James E. Dickinson, Jr., Joseph E. Pierson, S. Donald Stookey
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Patent number: 4952026Abstract: There is disclosed an optical element having a pattern of raised optical elements integral with a surface thereof, and a metal coating selectively covering the surface intermediate the optical elements to form a mask optically isolating the elements. Several methods of producing such metal coating are disclosed that employ conventional photoresist materials and means of applying and removing such materials. Also, a modified element, that is adapted to use in a liquid crystal display device, and methods of producing such modified element are disclosed.Type: GrantFiled: May 22, 1989Date of Patent: August 28, 1990Assignee: Corning IncorporatedInventors: Robert H. Bellman, Nicholas F. Borrelli, Bruce H. Raeder
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Patent number: 4854957Abstract: A metod for making a photochromic glass article exhibiting a surface color pattern wherein a silver halide-containing photochromic glass article is treated by exposing at least a portion of the surface thereof to a patterned heat source for a time sufficient to raise the temperature of at least a part of the exposed portion above about 450.degree. C., is described. The glass may be exposed to the patterned heat source either before or after thermal reduction coloring. Patterned heating to a temperature in the transformation range of the glass is used where a post-patterning thermal reduction coloration step is to be used, in order to render the glass resistant to reduction coloration in the patterned area.Type: GrantFiled: April 13, 1988Date of Patent: August 8, 1989Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Paul A. Sachenik