Patents by Inventor Roger F. Bartholomew
Roger F. Bartholomew 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: 20020076192Abstract: A glass component in an optical system, which may be a lazing or an optical amplifying medium, comprising a silicate base glass doped with at least two Group III B elements, the glass, and a method of preventing clustering of a rare earth metal ion in the glass.Type: ApplicationFiled: November 15, 2001Publication date: June 20, 2002Inventors: Roger F. Bartholomew, Heather D. Boek, Michelle D. Pierson, Carlton M. Truesdale
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Patent number: 6356699Abstract: A glass component in an optical system, which may be a lazing or an optical amplifying medium, comprising a silicate base glass doped with at least two Group III B elements, the glass, and a method of preventing clustering of a rare earth metal ion in the glass.Type: GrantFiled: August 7, 1998Date of Patent: March 12, 2002Assignee: Corning IncorporatedInventors: Roger F. Bartholomew, Heather D. Boek, Michelle D. Pierson, Carlton M. Truesdale
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Patent number: 5770473Abstract: A package for a high power semiconductor laser comprising a hermetically sealed container filled with a dry gaseous medium containing oxygen. The presence of oxygen in the laser atmosphere is counter to standard practice in the art which teaches the use of an atmosphere of a dry inert gas. The package also includes a getter for organic impurities, e.g., a getter composed of a porous silica or a zeolite. The hydrogen content of the materials used to form the package are reduced by baking at an elevated temperature for an extended period of time, e.g., at 150.degree. C. for 200 hours.Type: GrantFiled: April 7, 1997Date of Patent: June 23, 1998Assignee: Corning IncorporatedInventors: Douglas W. Hall, Paul A. Jakobson, Julia Alyson Sharps, Roger F. Bartholomew
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Patent number: 5696785Abstract: A getter for immobilizing water and organic molecules which may be present as impurities in an enclosure for a high power laser. The getter is formulated from selected zeolite compositions having a pore or channel size suitable for immobilizing water and a size range of organic molecules up to about 40 microns. A binder is used to provide a getter having sufficient strength to allow use of the getter in a laser enclosure in a telecommunications application. The binder also provides a substantially dust free getter body to maintain the cleanliness of the interior of the laser enclosure. Getters which immobilize only organics or only water are contemplated.Type: GrantFiled: October 11, 1994Date of Patent: December 9, 1997Assignee: Corning IncorporatedInventors: Roger F. Bartholomew, Margaret K. Faber, Julia A. Sharps, Kenneth E. Zaun
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Patent number: 5629952Abstract: A package for a high power semiconductor laser comprising a hermetically sealed container filled with a dry gaseous medium containing oxygen. The presence of oxygen in the laser atmosphere is counter to standard practice in the art which teaches the use of an atmosphere of a dry inert gas. The package also includes a getter for organic impurities, e.g., a getter composed of a porous silica or a zeolite. The hydrogen content of the materials used to form the package are reduced by baking at an elevated temperature for an extended period of time, e.g., at 150.degree. C. for 200 hours.Type: GrantFiled: June 7, 1995Date of Patent: May 13, 1997Assignee: Corning IncorporatedInventors: Roger F. Bartholomew, Paul A. Jakobson, Douglas W. Hall, Julia A. Sharps
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Patent number: 5346865Abstract: This invention is directed to the production of transparent glasses exhibiting transmission far into the infrared regime of the radiation spectrum. The glasses consist essentially, in mole percent, of 42-55% CdF.sub.2 and/or CdCl.sub.2, 30-40% NaF and/or NaCl, 2-20% total of BaF.sub.2 and/or BaCl.sub.2 +KF and/or KCl, consisting of 0-15% BaF.sub.2 and/or BaCl.sub.2 and 0-7% KF and/or KCl, 1-12% total of at least one stabilizing metal halide selected from the group LiX, BeX.sub.2, MgX.sub.2, MnX.sub.2, PbX.sub.2, TlX, COX.sub.2, and ZnX.sub.2, and 0,005-0.5% REX.sub.3, wherein Re is at least one rare earth metal selected from the lanthanide series of rare earth metals and X is at least one halide selected from the group consisting of fluoride, chloride, and bromide. The preferred glasses contain at least 2% each of BaF.sub.2 and/or BaCl.sub.2 and KF and/or KCl.Type: GrantFiled: July 6, 1993Date of Patent: September 13, 1994Assignee: Corning IncorporatedInventors: Bruce G. Aitken, Frank A. Annunziata, Roger F. Bartholomew, Mark A. Newhouse, Mark L. Powley, Andrea L. Sadd
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Patent number: 5240885Abstract: This invention is directed to the production of transparent glasses exhibiting transmission far into the infrared regime of the radiation spectrum. The glasses consist essentially, in mole percent, of 42-55% CdF.sub.2 and/or CdCl.sub.2, 2-15% BaF.sub.2 and/or BaCl.sub.2, 30-40% NaF and/or NaCl, 2-7% KF and/or KCl, 1-12% total of at least one stabilizing metal halide selected from the group LiX, BeX.sub.2, MgX.sub.2, MnX.sub.2, PbX.sub.2, TlX, CoX.sub.2, and ZnX.sub.2, and 0.005-0.5% ReX.sub.3, wherein Re is at least one rare earth metal selected from the lanthanide series of rare earth metals and X is at least one halide selected from the group consisting of fluoride, chloride, and bromide.Type: GrantFiled: September 21, 1992Date of Patent: August 31, 1993Assignee: Corning IncorporatedInventors: Bruce G. Aitken, Frank A. Annunziata, Roger F. Bartholomew, Mark A. Newhouse, Mark L. Powley, Andrea L. Sadd
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Patent number: 5151117Abstract: Disclosed is a method of forming a doped glass body. The glass body is formed by adding a dopant to a glass preform, at least part of which has interconnective pores. The porous preform is immersed in a solution of a salt of the dopant dissolved in an organic solvent having no OH groups. The solvent is removed, and the porous glass preform is heat treated to consolidate it into a non-porous glassy body containing the dopant dispersed throughout at least a portion of the body. An OH-free solvent is selected because of its beneficial effect on the preform during the drying step. Whereas OH-containing solvents such as water and alcohol caused cracking and/or flaking of the outer surface of the porous preform following the drying step, an undamaged surface is formed by the present invention.Type: GrantFiled: June 14, 1991Date of Patent: September 29, 1992Assignee: Corning IncorporatedInventors: Roger F. Bartholomew, Andrea L. Sadd
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Patent number: 4978646Abstract: This invention relates to the production of ceramic materials which exhibit a dielectric constant in excess of 105, when measured at room temperature, and a small temperature coefficient of capacitance across the temperature range of -55.degree. to 125.degree. C., when compared to the capacitance measured at room temperature, which material has a composition encompassed within one of the following general formulae:(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m O.sub.3m+1).sup.2- ; (I)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Zr.sub..beta. O.sub.3m+.delta.+1).sup.2- ; and (II)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Mn.sub..gamma. O.sub.3m+.delta.+1).sup.2- (III)(Bi.sub.2 O.sub.2).sup.2+ (A.sub.m-1 B.sub.m Zr.sub..beta. Mn.sub..gamma. O.sub.3m+.delta.+1).sup.Type: GrantFiled: March 3, 1989Date of Patent: December 18, 1990Assignee: Corning IncorporatedInventors: Pronob Bardhan, Roger F. Bartholomew, Donald M. Trotter, Jr., Chyang J. Yu
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Patent number: 4226628Abstract: This invention is related to the production of glasses having compositions within the copper and/or silver-halide-phosphate field, wherein at least one halide is present selected from the group of fluoride, chloride, bromide, and iodide, such glasses exhibiting softening points below about 400.degree. C., coefficients of thermal expansion (25.degree.-300.degree. C.) in excess of about 180.times.10.sup.-7 /.degree.C., high electrical conductivity, and electrochromic behavior. The copper-containing glasses may also demonstrate thermochromic properties.Type: GrantFiled: July 30, 1979Date of Patent: October 7, 1980Assignee: Corning Glass WorksInventors: Roger F. Bartholomew, William G. Dorfeld, James A. Murphy, Joseph E. Pierson, Stanley D. Stookey, Paul A. Tick
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Method for making silver-containing glasses exhibiting thermoplastic properties and photosensitivity
Patent number: 4160654Abstract: This invention is concerned with the preparation of glass articles containing silver ions which exhibit thermoplastic properties and may, optionally, demonstrate photosensitivity to ultraviolet radiation. Such articles are produced through the exchange of Ag.sup.+ ions for Na.sup.+ and/or K.sup.+ ions in a hydrated Na.sub.2 O and/or K.sub.2 O--SiO.sub.2 glass. The articles will demonstrate photosensitivity when the compositions thereof also contain halide ions.Type: GrantFiled: October 25, 1977Date of Patent: July 10, 1979Assignee: Corning Glass WorksInventors: Roger F. Bartholomew, Joseph F. Mach, Che-Kuang Wu -
Patent number: 4133665Abstract: The present invention is concerned with the production of sodium and/or potassium hydrosilicate glass bodies. The basis of the invention resides in the hydration of anhydrous sodium and/or potassium silicate glass bodies in aqueous alcohol solutions to impart enhanced mechanical strength and thermoplastic properties thereto. The hydrating process, which permits close control to be maintained over the water content absorbed in the glass, can be carried out in liquid solutions of water and relatively short chain, i.e. up to about five carbon atoms, aliphatic alcohols or in gaseous atmospheres of such solutions. An ion exchange reaction of Li.sup.+ ions or protons with Na.sup.+ and/or K.sup.+ ions can be promoted at temperatures above the transformation range of the hydrated glass, and an exchange of K.sup.+ ions for Na.sup.+ and/or Li.sup.+ ions at temperatures below the transformation range.Type: GrantFiled: September 1, 1977Date of Patent: January 9, 1979Assignee: Corning Glass WorksInventors: Roger F. Bartholomew, William L. Haynes, Leon M. Sanford
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Patent number: 4099978Abstract: The present invention is directed to the preparation of hydrated glasses in the Na.sub.2 O-K.sub.2 O-PbO-SiO.sub.2 base composition system containing an amount of BaO and/or Y.sub.2 O.sub.3 and/or ZnO and/or ZrO.sub.2 effective to cause the hydrated glass to be essentially colorless. Such glasses are transparent, exhibit refractive indices higher than 1.60, and which demonstrate intrinsic thermoplastic properties thereby enabling such to be readily molded into optical quality components at relatively low temperatures. The operable glasses in the anhydrous state consist essentially, in mole percent on the oxide basis, of 8-18% Na.sub.2 O, 2-6% K.sub.2 O, 10-23% Na.sub.2 O + K.sub.2 O, >15 but <21% PbO, 55-67% SiO.sub.2, the mole ratio PbO:SiO.sub.2 being between 0.225-0.3, and an effective amount of BaO and/or Y.sub.2 O.sub.3 and/or ZnO and/or ZrO.sub.2 up to the indicated maxima of 5% BaO, 5% Y.sub.2 O.sub.3, 8% ZnO, and 5% ZrO.sub.2, BaO + Y.sub.2 O.sub.3 + ZnO + ZrO.sub.2 not exceeding 10%.Type: GrantFiled: October 20, 1977Date of Patent: July 11, 1978Assignee: Corning Glass WorksInventors: Roger F. Bartholomew, Che-Kuang Wu
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Patent number: 4026692Abstract: A glass article having relatively high degrees of surface smoothness, durability, and light transmissivity can be made by forming a glass comprising, in mole percent on an oxide basis, 70-80% SiO.sub.2, 8-18% Na.sub.2 O and/or K.sub.2 O, and 5 to 10% of ZnO and/or PbO; hydrating the glass under acidic conditions to include a water content of up to 12% by weight while reducing the alkali content; reacting the hydrated glass with a HF-containing solution to remove up to 30 weight % of the glass; dehydrating the glass, if necessary, to reduce the total water content to a range of 3 to 7 weight percent; and pressure molding the glass under conditions sufficient to impart an optical quality surface smoothness of a die to the glass surface.Type: GrantFiled: December 15, 1975Date of Patent: May 31, 1977Assignee: Corning Glass WorksInventor: Roger F. Bartholomew
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Patent number: 3948629Abstract: The present invention relates to a method for hydrating fine-dimensioned alkali metal-containing silicate glass bodies so as to impart the property of thermoplasticity thereto. More particularly, this invention contemplates contacting fine-dimensioned alkali metal silicate glass bodies with an aqueous solution at elevated temperatures and pressures to develop at least a surface layer thereon having a water content ranging up to about 36% by weight, said aqueous solution having a pH less than 6 as measured at room temperature. The hydrated bodies can approach certain properties of high-polymer organic plastics and exhibit the capability of being thermoplastically formed at relatively low temperatures.Type: GrantFiled: April 29, 1974Date of Patent: April 6, 1976Assignee: Corning Glass WorksInventors: Roger F. Bartholomew, Larry E. Campbell, Stanley S. Lewek, Joseph E. Pierson, Stanley D. Stookey