| Patent Number |
Title Of Patent |
Date Issued |
| 5026409 |
Preparation of fluoride glass optical preforms and fibers |
June 25, 1991 |
| A preform for preparation of optical fibers is prepared by inserting a rod of a higher index of refraction fluoride glass into the bore of a hollow cylinder of a lower index of refraction fluoride glass fiber. This preform precursor is processed to collapse the hollow cylinder inwardly t |
| 4857249 |
Fabrication of rods of uniform high density from powders of refractory materials |
August 15, 1989 |
| Cylindrical rods of titanium carbide or other refractory material with uniform, high density are prepared by hot pressing plates from powders of the material, with a uniaxial pressing pressure applied to the broad faces of the plate. Bars of square cross section are then cut from the pla |
| 4687538 |
Method for growing single crystals of thermally unstable ferroelectric materials |
August 18, 1987 |
| A method is disclosed for growing thermally unstable ferroelectric materials having the formula MH.sub.2 XO.sub.4, where M is potassium, rubidium, cesium or ammonium; H is hydrogen or deuterium and X is phosphorus or arsenic. The ferroelectric material is heated to melt temperature i |
| 4605468 |
Shaped crystal fiber growth method |
August 12, 1986 |
| An apparatus and method pulling a shaped crystalline fiber of a given crystal-forming material from a liquid reservoir of the material. The apparatus includes a vessel in which the liquid material is maintained as a liquid reservoir at a temperature above the melting point or crystal |
| 4582579 |
Method for preparing cupric ion-free cuprous chloride |
April 15, 1986 |
| An improvement of the method for preparing cupric ion-free cuprous chloride powder in which copper metal is added to a highly acidified solution of cupric chloride to reduce the cupric ions to cuprous ions and oxidize the copper metal to cuprous ions. The improvement involves applying an |
| 4532000 |
Fabrication of single crystal fibers from congruently melting polycrystalline fibers |
July 30, 1985 |
| This invention provides a method for conversion of congruently melting polycrystalline fibers to single crystal fibers. The method is particularly useful for production of fibers ranging from about 30 .mu.m to about 1,000 .mu.m in diameter, which are capable of infrared (IR) transmis |
| 4465656 |
Process for preparation of water-free oxide material |
August 14, 1984 |
| The specification discloses new and improved processes for forming water-free metal or non-metal oxide materials, which may then be melted and formed into optical components in vitreous or crystal form, which are free of the hydrogen-impurity absorption in the near infrared wavelength |
| 4462974 |
Process for preparation of water-free oxide material |
July 31, 1984 |
| The specification discloses new and improved processes for forming water-free metal or non-metal oxide materials, which may then be melted and formed into optical components in vitreous or crystal form, which are free of the hydrogen-impurity absorption in the near infrared wavelength |
| 4462970 |
Process for preparation of water-free oxychloride material |
July 31, 1984 |
| The specification discloses a process for forming a water-free rare earth oxychloride powder by exposing a water-containing rare earth oxide powder to a reactive atmosphere of chlorine and oxygen at 1000.degree. C. for 24 hours to remove water impurities from the oxide powder and to |
| 4429009 |
Process for surface conversion of vitreous silica to cristobalite |
January 31, 1984 |
| The specification discloses a process for converting the surface layer of a body of vitreous silica to the more stable crystalline form of silica known as cristobalite. The surface of the body of vitreous silica is exposed to a gas phase reactive atmosphere comprising atomic iodine at a |
| 4379733 |
Bicameral mode crystal growth apparatus and process |
April 12, 1983 |
| An apparatus and process for growing large single halide crystals that are ultra pure is described. A bicameral apparatus and process is employed in which the crystals are grown in a reactive chamber positioned within an inert chamber. A radial seal is provided on the furnace chamber to |
| 4332879 |
Process for depositing a film of controlled composition using a metallo-organic photoresist |
June 1, 1982 |
| The specification describes a process for depositing a film of controlled composition on a substrate by using a metallo-organic photoresist in which the organic portion is combusted by heating in a reactive atmosphere to leave a residual deposit of a desired substance on the substrate. T |
| 4251315 |
Method of growing metal halide and chalcogenide crystals for use as infrared windows |
February 17, 1981 |
| Disclosed is a method of producing metal halide and metal chalcogenide crystals for infrared window application which exhibits a high conversion ratio. |
| 4196963 |
Method for eliminating Li.sub.2 O out-diffusion in LiNbO.sub.3 and LiTaO.sub.3 waveguide structu |
April 8, 1980 |
| A process for suppressing the out-diffusion of Li.sub.2 O from LiNbO.sub.3 and LiTaO.sub.3 waveguide structures by exposing the structures to a Li.sub.2 O-rich environment at sufficient vapor pressure that Li.sub.2 O diffuses into the structure as a compensation process and a solid-solid |
| 4190640 |
Generation of nascent bromine for use in the growth of ultra pure metal bromides |
February 26, 1980 |
| An improved process for generating nascent bromine through the pyrolytic dissociation of CBr.sub.4 is shown to be applicable to the growth of large single crystals of metal bromides from the melt. |
| 4190487 |
Reactive atmosphere processing method of crystal growth of alkaline earth chlorides |
February 26, 1980 |
| Alkaline earth chloride crystals exhibiting substantially improved physical and optical transmission characteristics are grown from starting powders by a one step Reactive Atmospheric Processing (RAP) method. |
| 4110080 |
Reactive atmospheric processing crystal growth apparatus |
August 29, 1978 |
| A crucible adapted for receiving crystal growth starting materials and exposing them to a reactive atmosphere under a carefully controlled temperature environment is disclosed. |
| 4076574 |
Reactive atmosphere crystal growth method |
February 28, 1978 |
| Alkali metal halide crystals exhibiting substantially improved physical and optical transmission characteristics are grown from starting powders by a one step Reactive Atmospheric Processing (RAP) method. |
