| Patent Number |
Title Of Patent |
Date Issued |
| 7381979 |
Rotating irradiation apparatus |
June 3, 2008 |
| A rotating irradiation apparatus includes a rotating gantry 3 including a front ring 19 and a rear ring 20 and is provided with a beam delivery device 11 and an irradiation device 4. The beam delivery device 11 delivers an ion beam used for particle radiotherapy. Radial support devic |
| 6769917 |
Method for indicating defective part in educational material and apparatus for indicating defect |
August 3, 2004 |
| In an education system using a network, a method for automatically detecting a defective part in an education material and for indicating the defective part is provided. A defective information storing means for storing a defect point correlation with a portion of an education material |
| 6755662 |
Method for presenting most suitable question and apparatus for presenting most suitable question |
June 29, 2004 |
| In a method for presenting questions by a host computer receiving questions from users, a question most suitable to an user can be presented. In an education system wherein plurality of students' personal computers PC are connected to an education center through a network, at the time of |
| 6673146 |
Method of manufacturing a magnet-free faraday rotator |
January 6, 2004 |
| A method of manufacturing is used to manufacture a magnet-free Faraday rotator having a square hysteresis loop, the Faraday rotator being formed of a bismuth-substituted rare earth iron garnet single crystal that has a compensation temperature in the range of 10 to 40.degree. C. and is g |
| 6411641 |
Faraday rotator for use with high energy lasers |
June 25, 2002 |
| A high-energy laser Faraday rotator is used in an optical system in which the Faraday rotator absorbs laser light energy of more than 20 mW. The Faraday rotator includes a bismuth-substituted rare-earth iron garnet single crystal film grown as a Faraday rotator by using a liquid phase |
| 6295150 |
Wavelength division multiplexing device |
September 25, 2001 |
| A wavelength division multiplexing device which can easily utilize existing optical fibers for increasing the transmission capacity by approximately several fold mainly in a short-range information communication network, comprising, as essential elements, a pair of 1.times.N optical coup |
| 6059878 |
Method of manufacturing a bismuth-substituted rare-earth iron garnet single crystal film |
May 9, 2000 |
| A method is used when manufacturing a bismuth-substituted rare-earth iron garnet single crystal (BIG) film by the LPE method. The BIG film is grown on one side of a non-magnetic garnet substrate using a melt that contains flux components and rare-earth oxides. An amount of calcium is add |
| 6031654 |
Low magnet-saturation bismuth-substituted rare-earth iron garnet single crystal film |
February 29, 2000 |
| A low magnetic saturation type bismuth-substituted rare-earth iron garnet crystal film of the invention is grown on a substrate of (111) garnet single crystal (GdCa)3(GaMgZr)5O12 by using a liquid phase epitaxial method. This single crystal has a lattice constant of 1.2497.+-.0.0002 nm |
| 6030449 |
Garnet single crystal for substrate of magneto-optic element and method of manufacturing thereof |
February 29, 2000 |
| A garnet crystal for growing a substrate is used in manufacturing a magneto-optic element. The garnet is manufactured by a Czochralski method and has a chemical structure represented by La.sub.8-(x+y) Yb.sub.x Ga.sub.y O.sub.12 wherein x has the range 1.0.ltoreq.x.ltoreq.3.0, y has t |
| 5925474 |
Bismuth-substituted rare earth iron garnet single crystal film |
July 20, 1999 |
| A BIG film for a Faraday rotator is provided with a first antireflection film on the front surface and a second antireflection on the back surface. The first and second antireflection films differ in material or thickness and therefore differ in color. The difference in color makes it po |
| 5920420 |
Faraday rotator with antireflection film |
July 6, 1999 |
| A Faraday rotator is formed of a bismuth-substituted iron garnet single crystal film on which an antireflection film is formed. The antireflection film includes first, second, and third layers. The first layer is a layer of silicon dioxide. The second layer is a layer of tantalum pentoxi |
| 5898516 |
Faraday rotator having a rectangular shaped hysteresis |
April 27, 1999 |
| A Faraday rotator is formed of a bismuth-substituted iron garnet single crystal film grown by a liquid phase epitaxial method. The single crystal film is represented by a formula: Tb.sub.3-x Bi.sub.x Fe.sub.5-y-z Ga.sub.y Al.sub.z O.sub.12 wherein x has the range 1.1.ltoreq.x.ltoreq. |
| 5866092 |
Garnet single crystal for substrate of magneto-optic element and method of manufacturing thereof |
February 2, 1999 |
| A garnet crystal for growing a substrate is used for manufacturing a magneto-optic element. The garnet crystal is grown by the Czochralski method and has a chemical structure represented by Gd.sub.8-(x+y) Yb.sub.x Ga.sub.y O.sub.12 wherein x has the range 1.0.ltoreq.x.ltoreq.3.0, y has |
| 5838853 |
Optical waveguide |
November 17, 1998 |
| An optical waveguide having stable low branching ratio is disclosed, which includes a primary optical waveguide portion coupled at a input end thereof to an input-side optical fiber. branched optical waveguide portions each having one end continuously connected to a output end of the |
| 5683506 |
Method of manufacturing a bismuth-substituted rare earth iron garnet single crystal film for sho |
November 4, 1997 |
| A method of manufacturing a bismuth-substituted rare-earth iron garnet single crystal film used for short wavelengths, includes the steps of: manufacturing a BIG-grown substrate in an LPE furnace by the LPE method, the BIG-grown substrate having a bismuth-substituted rare-earth iron |
| 5565131 |
Bismuth-substituted rare earth iron garnet single crystal |
October 15, 1996 |
| A bismuth-substituted rare earth iron garnet single crystal film is represented by a general equation Tb.sub.x Lu.sub.y Bi.sub.3-x-y Fe.sub.5-z Al.sub.z O.sub.12 (where 0.09.ltoreq.y/x.ltoreq.0.23, 1.40.ltoreq.x+y.ltoreq.1.70, 0.20.ltoreq.z.ltoreq.0.38) grown on a non-magnetic garnet |
| 5535046 |
Faraday rotator |
July 9, 1996 |
| A Faraday rotator in which a portion of a rare-earth iron garnet single crystal film is exposed to a localized magnetic field to control hysteresis. In one embodiment, the field is applied by a permanent magnet positioned on a part of the film. As a result, it is possible to fabricate |
| 5512193 |
Low saturated magnetic field bismuth-substituted rare earth iron garnet single crystal and its u |
April 30, 1996 |
| A bismuth-substituted rare earth iron garnet single crystal grown on a non-magnetic substrate having a lattice constant of 12.490 .ANG.-12.510 .ANG. by the liquid phase epitaxial method, and represented by a general equation:where R denotes at least one element selected from the group co |
| 5493222 |
Reflection type magnetooptic sensor head with faraday rotator |
February 20, 1996 |
| A reflection type magnetooptic sensor head. The respective structural elements are aligned in the order of a light source, light inputting/outputting path, polarizer, Faraday rotator, and reflecting film. The Faraday rotator is made of a (111) bismuth-substituted iron garnet single c |
| 5463316 |
Magnetooptic sensor head |
October 31, 1995 |
| A reflection type magnetooptic sensor head is disclosed. The respective structural elements are aligned following a light source in the order of a light inputting/outputting path, polarizer, Faraday rotator, and reflecting mirror. The Faraday rotator is made of a (111) bismuth-substi |
| 5345329 |
Polarization-independent optical isolator |
September 6, 1994 |
| An optical isolator comprises two birefringent plates one of which separates two light components whose planes of polarization are perpendicular to each other to make the two light components spatially separate between the two birefringent plates and pass through two separate optical |
| 5278853 |
Optical isolator |
January 11, 1994 |
| A high quality small-sized polarization independent optical isolator for use in an optical fiber communication system, wherein a pair of magneto-optical elements having Faraday rotation angle of 45.+-.5 are contained in permanent magnets and arranged between a pair of birefringent cr |
| 5091986 |
Optical divider for multimode optical fiber systems |
February 25, 1992 |
| An optical divider for multimode optical fibers of graded-index (GI) type composed of an optical input section for securing input optical fiber, a branching section including an optical waveguide having rectangular sectional shapes irrespective of a kind of material or a method of fa |
| 4932760 |
Magneto-optic garnet |
June 12, 1990 |
| This invention provides a magneto-optic garnet grown by liquid phase epitaxy on a nonmagnetic garnet substrate and having a composition of the following formula (1)wherein 0.3.ltoreq.y/x.ltoreq.1.0 and x+y<3.0.According to this invention there is provided a magneto-optic garnet as a F |
| 4751326 |
Process for producing benzophenone-azine |
June 14, 1988 |
| An improved process for producing benzophenone-azine in which a catalyst can be removed, recovered and recycled is disclosed. The process comprises the steps of:(a) oxidizing benzophenone-imine with molecular oxygen in the presence of cuprous chloride catalyst to produce an oxidation rea |
| 4727190 |
Process for preparing benzophenone-azines |
February 23, 1988 |
| A process for continuously preparing benzophenone-azines comprising oxidizing benzophenone-imines with molecular oxygen or a molecular oxygen-containing gas in the presence of a copper halide catalyst is disclosed. The oxidation reaction is carried out in a multistage system under an |
| 4347383 |
Process for producing benzophenone-azines |
August 31, 1982 |
| A process for producing a benzophenone-azine which comprises reacting the corresponding benzophenone-imine with molecular oxygen or benzophenone with ammonia and molecular oxygen in the presence of a catalyst selected from the group consisting of metals, metal oxides and alloys of two or |
| 4239741 |
Process for producing hydrazine sulfate |
December 16, 1980 |
| Hydrazine sulfate having a relatively large particle diameter and a high purity is produced by hydrolysis of benzophenoneazines by sulfuric acid having a concentration of 75% by weight or less in an amount of 1.1 times by mole or more the stoichiometric amount in a very high conversion a |
| 4130586 |
Process for producing imine compounds |
December 19, 1978 |
| An imine compound is produced by reacting a benzophenone with ammonia in the presence of 0.01 to 10% by weight of a carboxylic acid as a catalyst at a reaction temperature of 50.degree. to 350.degree. C on the basis of benzophenone. Ammonia is fed to the reaction system continuously unde |
| 4083869 |
Process for producing imine compounds |
April 11, 1978 |
| An imine compound is produced in high yield by reacting a benzophenone with ammonia in the presence of 0.01 to 100% by weight of an oxide of at least one of metals selected from the group consisting of metals of the second to fifth periods of Group III to V of the periodic Table, and iro |
