| Patent Number |
Title Of Patent |
Date Issued |
| 7589040 |
Doped silica glass articles and methods of forming doped silica glass boules and articles |
September 15, 2009 |
| The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a titania-doped silica glass article has a titania content of between about 5 wt % and about 9 |
| 7155936 |
Doped silica glass articles and methods of forming doped silica glass boules and articles |
January 2, 2007 |
| The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a titania-doped silica glass article has a titania content of between about 5 wt % and about 9 |
| 7097880 |
Method for preparing catalysts |
August 29, 2006 |
| A method for impregnating porous monolith supports with catalytically active materials is disclosed. The impregnation is carried out at a temperature which substantially reduces chemisorption rates such that reactions between the monolith substrate and catalytically active materials |
| 7089766 |
Method of forming optical fiber preforms |
August 15, 2006 |
| Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphere, removing water |
| 6843076 |
Single step laydown method of making dry fiber with complex fluorine doped profile |
January 18, 2005 |
| A method of making an optical waveguide preform includes forming a preform including a first portion and a second radial portion, wherein the second portion includes a dopant, and wherein the first portion exhibits a density greater than the second portion. The method further includes |
| 6813907 |
Fluorine doping a soot preform |
November 9, 2004 |
| The invention includes a method of incorporating fluorine into a preform that may be used to produce an optical article. A method that may be used to practice the invention includes a method of making an optical fiber preform. The method includes reacting a fluorine containing precursor |
| 6744951 |
Waveguides and method of making them |
June 1, 2004 |
| A method of coupling optical waveguides comprising the steps of: (i) providing at least one pair of waveguides located such that (a) light radiation propagating through one of the waveguides will be at least partially coupled to a corresponding waveguide and, (b) these waveguides are |
| 6697541 |
Amplitude tunable filter |
February 24, 2004 |
| A dynamically tunable filter controls the magnitude of couplings between core and cladding modes of a waveguide by surrounding the waveguide with an overcladding having an adjustable refractive index. The coupled modes are attenuated along the core to produce the desired spectral respons |
| 6599957 |
Photosensitive material suitable for making waveguides and method of making waveguides utilizing |
July 29, 2003 |
| A UV light-curable composition comprises: (a) a first component, said first component being UV light-polymerizable polymer having a first index of refraction; and (b) a second component, the second component being UV light-polymerizable monomer having a second index of refraction, the |
| 6519380 |
Athermalized integrated optical waveguide devices |
February 11, 2003 |
| The present invention provides an athermalized organic-containing overclad integrated planar optical waveguide circuit device in which thermal induced shifting of channel wavelengths is minimized. The organic-containing overclad material is combined with a silica or doped silica glas |
| 6511615 |
Hybrid organic-inorganic planar optical waveguide device |
January 28, 2003 |
| A planar optical device is formed on a substrate. The device comprises an array of waveguide cores which guide optical radiation. A cladding layer is formed contiguously with the array of waveguide cores to confine the optical radiation to the array of waveguide cores. At least one of th |
| 6488414 |
Optical fiber component with shaped optical element and method of making same |
December 3, 2002 |
| A method of making an in situ shaped optical element on the terminal end of an optical fiber, and the resultant optical fiber component for manipulating light entering or exiting the terminal end of an optical fiber. The in situ shaped optical element is preferably an inorganic-organ |
| 6466707 |
Phasar athermalization using a slab waveguide |
October 15, 2002 |
| A passive temperature-compensated integrated optical component having an array of adjacent waveguides, and a slab waveguide located within a groove at an intermediate section of the array. The waveguides have an index of refraction that increases with increasing temperature, and the slab |
| 6411746 |
Thermally tunable optical devices |
June 25, 2002 |
| The present invention relates to a tunable optical device 10 that includes an optical fiber device 12 having optical properties that vary with temperature and a heater 14. The heater 14 is thermally coupled to the optical fiber device 12. The heater 14 includes a metal layer 18 and two |
| 6144795 |
Hybrid organic-inorganic planar optical waveguide device |
November 7, 2000 |
| A planar optical device is formed on a substrate (12) and comprising an array of waveguide cores (14) and a cladding layer (16) formed contiguously with the cores. At least one of the array of waveguide cores (14) and the cladding layer (16) is an inorganic-organic hybrid material th |
| 5998328 |
Method of making activated carbon-supported catalysts |
December 7, 1999 |
| A method for making an activated carbon-supported catalyst involves providing an inorganic support having a continuous coating of activated carbon, activated carbon being derived from a synthetic carbon precursor, introducing a catalyst precursor into the pore structure of the activated |
| 5991493 |
Optically transmissive bonding material |
November 23, 1999 |
| An optically transmissive material and the production of optically transmissive articles therefrom, in particular a bond between two optically transmissive components including optical fibers and planar devices. |
| 5652188 |
Fiber-reinforced composite with sheet silicate interlayer |
July 29, 1997 |
| The invention relates to fiber reinforced composite materials, and a method for making, in which ceramic, glass-ceramic or glass matrix precursor particles are coated with a layer of sheet silicate crystals, or precursors for sheet silicate crystals, and then combined with a fiber re |
| 5605868 |
Oxidative stable ceramic composites |
February 25, 1997 |
| This invention is directed to the fabrication of SiC fiber reinforced, ceramic matrix composite articles exhibiting superior high temperature oxidative stability, those articles comprising:(a) a glass-ceramic matrix wherein alkali metal and/or alkaline earth metal aluminosilicate crystal |
| 5488023 |
Method of making activated carbon having dispersed catalyst |
January 30, 1996 |
| A method for making an activated carbon supported catalyst, the method comprising combining a carbon precursor and a catalyst precursor, curing the carbon precursor if necessary, carbonizing the carbon precursor, and activating the carbon to produce the activated carbon supported catalys |
| 5418194 |
Coated inorganic fiber reinforcement materials and ceramic composites comprising the same |
May 23, 1995 |
| Inorganic reinforcing fibers provided with a multi-layer protective coating comprising a boron nitride sublayer and an oxide-based overcoating of alumina or synthetic mica, and fiber-reinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. |
| 5198302 |
Coated inorganic fiber reinforcement materials and ceramic composites comprising the same |
March 30, 1993 |
| Silicon nitride reinforcing fibers provided with a protective surface coating comprising a boron nitride base layer and, optionally, an alumina overcoating, and fiber-reinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. The composi |
| 5153152 |
Multicomponent ceramic matrix composites |
October 6, 1992 |
| A fiber-reinforced ceramic matrix composite article comprising fiber-reinforced surface portions disposed on a ceramic core, the core differing in composition and high temperature properties from the surface portions and the fibers present in the surface portions being of a type norm |
| 5132253 |
Sol-gel method for making ceramic materials |
July 21, 1992 |
| A method for synthesizing alkaline earth metal-containing ceramic materials by sol-gel processing is described, wherein a sol containing alkoxides or other soluble precursors for a selected ceramic composition, and additionally containing one or more dissolved alkaline earth metal/crown |
| 4948758 |
Fiber-reinforced composite comprising mica matrix or interlayer |
August 14, 1990 |
| Ceramic matrix composite articles comprising a ceramic, glass-ceramic or glass matrix and a fiber reinforcement phase disposed within the matrix consisting of amorphous or crystalline inorganic fibers, wherein there is provided, on or in close proximity to the surfaces of the inorganic |
| 4935387 |
Fiber-reinforced composite comprising mica matrix or interlayer |
June 19, 1990 |
| Ceramic matrix composite articles comprising a ceramic, glass-ceramic or glass matrix and a fiber reinforcement phase disposed within the matrix consisting of amorphous or cyrstalline inorganic fibers, wherein there is provided, on or in close proximity to the surfaces of the inorganic |
| 4808460 |
Laminated structures containing an inorganic corrugated or honeycomb member |
February 28, 1989 |
| This invention relates to the production of laminated structures consisting essentially of a light weight interior member prepared from a glass, glass-ceramic, or ceramic, an exterior member prepared from a glass, glass-ceramic, or ceramic, and a bonding member prepared from a glass, |
