Today In History
Six-year-old Robert W. Patch granted a patent for a "toy truck".
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8047023 | Method for producing titania-doped fused silica glass A method for producing a fused silica glass containing titania includes synthesizing particles of silica and titania by delivering a mixture of a silica precursor and a titania precursor to a burner, growing a porous preform by successively depositing the particles ... | 11/01/2011 |
| 8011209 | Method of making glass A method of making a glass is provided in which the time needed for doping a refractive index control substance such as fluorine into a soot glass deposit body can be reduced. The method comprises the steps of: (1) putting a soot glass deposit body in a container; (... | 09/06/2011 |
| 7320561 | System and method for handling bulk materials A bulk material handling system generally consisting of means for holding the material; means for conveying the material including a first conduit formed of a permeable material having an inlet communicating with an outlet of the material holding means and an outlet... | 01/22/2008 |
| 7250118 | Agglomerated nanoparticles having a rutile-like crystalline phase Agglomerated nanoparticles including Ti/Sb mixed oxide nanoparticles having a rutile-like crystalline phase content of at least 20 weight percent, wherein the nanoparticles have at least one organic moiety bound to the nanoparticle surface, and wherein the weight ra... | 07/31/2007 |
| 7218820 | Method and system for providing a hydrogen diffusion barrier for fiber optic cables used in hostile environments A fiber optic conduit for use in a hostile environment includes a hydrogen barrier shell that is disposed outwardly from an inner axial tube. The hydrogen barrier shell comprises a material that is capable of reducing hydrogen permeation through the fiber optic cond... | 05/15/2007 |
| 7184636 | Method of controllably doping a glassy optical preform with water A method of manufacturing a glassy optical preform is disclosed that includes providing a preform having a silica soot layer and then sintering the soot layer into a glassy layer, and water is selectively added to the preform by exposing the soot layer to a gaseous ... | 02/27/2007 |
| 7162894 | Method for charging quartz glass objects with hydrogen The invention relates to the loading of quartz glass objects with hydrogen in an annealing process in a furnace for improving the homogeneity of the refractive index and the laser resistance while, at the same time, maintaining a specified stress birefringence of ea... | 01/16/2007 |
| 7137759 | System and method for handling bulk materials A bulk material handling system generally consisting of means for holding the material; means for conveying the material including a first conduit formed of a permeable material having an inlet communicating with an outlet of the material holding means and an outlet... | 11/21/2006 |
| 7130513 | Glass-body-producing method and optical glass body and optical fiber A method produces a glass body that contains a reduced amount of OH groups in the metallic-oxide-containing glass layer and that has a reduced amount of transmission loss due to OH groups when the glass body is transformed into an optical fiber. The production metho... | 10/31/2006 |
| 7089765 | Method of making a jacketed preform for optical fibers using OVD On the basis of a known process for the production of a preform for an optical fiber for optical data transmission technology, the productivity of the process for the production of complex refractive index profiles is to be improved by providing a quartz glass subst... | 08/15/2006 |
| 7089766 | Method of forming optical fiber preforms 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 atmosphe... | 08/15/2006 |
| 7092611 | Method for manufacturing a bar-shaped preform as well as a method for manufacturing optical fibres from such a bar-shaped preform The present invention relates to a method for manufacturing a bar-shaped preform. The present invention further relates to a method for manufacturing optical fibers using the manufactured bar-shaped preform. ... | 08/15/2006 |
| 7088900 | Alkali and fluorine doped optical fiber Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber ha... | 08/08/2006 |
| 7076141 | Low water peak optical waveguide fiber Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical wav... | 07/11/2006 |
| 7058269 | Reconstructed glass for fiber optic applications The present invention concerns a preform for an optical fiber, an optical fiber so obtained and methods for making the same. The fiber is characterized in that porous glass doped with at least one dopant is used. Resulting fibers can be used to make high attenuation... | 06/06/2006 |
| 7037004 | Optical fiber component for spot size transition and method of making the same A large-diameter core optical fiber and a small-diameter core high optical fiber are fusion-spliced, and the spliced portion is heated to expand the core diameter of a core of the high optical fiber and form a spot size transition portion, whereby spot sizes of the ... | 05/02/2006 |
| 7022633 | Synthetic quartz glass and process for producing it A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm−1 (I | 04/04/2006 |
| 6966201 | High-temperature sintering of soot bodies doped using molecular stuffing Techniques are described for fabricating a preform from a soot body. In one described technique, a soot body is loaded into a substrate tube, and the position of the soot body is stabilized within the tube. The tube is then rotated around its longitudinal axis. Heat... | 11/22/2005 |
| 6962946 | Nanoparticles having a rutile-like crystalline phase and method of preparing same Nanometer-sized particles comprise a mixed oxide of titanium and antimony and are characterized by rutile-like crystal phases. The particles are easily prepared by hydrothemal processing, and may be used as colloids, or in various compositions and articles. ... | 11/08/2005 |
| 6907170 | Hydrogen diffusion delay barrier for fiber optic cables used in hostile environments A fiber optic cable for use in a hostile environment includes a fiber in metal core. The fiber in metal core includes one or more optical fibers that are disposed inwardly from an inner axial tube. The fiber optic cable also includes a hydrogen barrier shell that is... | 06/14/2005 |
| 6901775 | Method and apparatus for providing a uniform coating thickness along an axial direction within a substrate tube A method and apparatus for providing a uniform coating thickness along an axial direction within an internal portion of a substrate tube is disclosed. A gas delivery unit is configured to coat the internal portion of the substrate tube. The gas delivery unit include... | 06/07/2005 |
| 6889528 | Process of making rare earth doped optical fiber The present invention discloses a process for making rare earth (RE) doped optical fiber by using RE oxide coated silica nanoparticles as the precursor material, more particularly the method of the present invention involves preparation of stable dispersions (sol) o... | 05/10/2005 |
| 6862900 | Method and apparatus for reducing stress between depositions within a substrate tube A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first hal... | 03/08/2005 |
| 6851281 | Method of fabricating rare earth doped optical fibre The present invention provides a method of fabricating rare earth doped preforms and optical fibers by a combination of modified chemical vapor deposition (MCVD) process and solution doping technique said MCVD process is used to develop matched or depressed clad str... | 02/08/2005 |
| 6813908 | Treating an optical fiber preform with carbon monoxide The invention includes inventive methods of treating a soot preform. One method includes heating a soot preform to a temperature of less than about 1000° C. and exposing the preform to a substantially halide free reducing agent. Preferred reducing agents include ca... | 11/09/2004 |
| 6813907 | Fluorine doping a soot preform 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... | 11/09/2004 |
| 6802191 | Controlled collapse of depressed index optical fiber preforms The doped silica core region of a core rod for an optical fiber preform is protected against unwanted fluorine doping during fluorine doping of the outer silica layer by selectively consolidating the core region prior to fluorine doping. Due to dopants in the core r... | 10/12/2004 |
| 6751990 | Process for making rare earth doped optical fiber The present invention provides an improved process for making rare earth doped preforms and fibers by a combination of MCVD technique and solution doping method, said method comprising developing matched or depressed clad structure inside a silica glass substrate tu... | 06/22/2004 |
| 6715322 | Manufacture of depressed index optical fibers The process time required for fluorine doping of porous silica bodies to produce fluorine doped preforms for the manufacture of depressed index optical fibers is reduced by separating the doping step into a predeposit step, where “excess” fluorine is deposited o... | 04/06/2004 |
| 6604388 | Solid state glass constituent delivery system A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low n... | 08/12/2003 |
| 6578387 | Method of fabrication of rare earth doped preforms for optical fibers The present invention discloses a method of fabricating rare earth-doped preforms for optical fibers. A silica soot is deposited as a layer with high porosity on an inner surface of a silica-based tube by a modified chemical vapor deposition (MCVD) proces... | 06/17/2003 |
| 6564585 | Method for producing a second-order nonlinear glass material There is disclosed second-order nonlinear glass material wherein a part having second-order nonlinearity contains Ge, H and OH and has second-order nonlinear optical constant d of 1 pm/V or more, and a method for producing second-order nonlinear glass mat... | 05/20/2003 |
| 6532775 | Method of depositing a layer of silica followed by a step of adding dopant to the layer A method of manufacturing an optical fiber preform (3) comprising: forming at least one silica-based outer deposition layer (23) by depositing silica on a primary preform (24) constituted by a bar mainly comprising silica and including a silica-based oute... | 03/18/2003 |
| 6532774 | Method of providing a high level of rare earth concentrations in glass fiber preforms A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low n... | 03/18/2003 |
| 6523369 | Method of forming an optical fiber A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low n... | 02/25/2003 |
| 6510710 | Multi-tube delivery system A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low n... | 01/28/2003 |
| 6502426 | Oxygen doping of silicon oxyfluoride glass High purity silicon oxyfluoride glass suitable for use as a photomask substrates for photolithography applications in the VUV wavelength region below 190 nm is disclosed. The inventive silicon oxyfluoride glass is transmissive at wavelengths around 157 nm... | 01/07/2003 |
| 6499317 | Synthetic quartz glass and method for production thereof A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm-1 | 12/31/2002 |
| 6490889 | Method of forming a glass preform A method and apparatus are disclosed for the manufacture of an optical fiber preform having incorporated therein a comparatively high concentration of rare earth dopant material, and which thus can be drawn and processed into an optical fiber having low n... | 12/10/2002 |
| 6467313 | Method for controlling dopant profiles The present invention discloses novel methods for fabricating glass articles, particularly optical fiber glass preforms, which may contain alumina, yttrium, lanthanum, erbium, or other rare earth metals as dopants. The glass articles made in accordance wi... | 10/22/2002 |
