| Patent Number |
Title Of Patent |
Date Issued |
| 6812441 |
Method and apparatus for the preparation of transparent alumina ceramics by microwave sintering |
November 2, 2004 |
| An apparatus (10) for the development of transparent alumina ceramics using microwave energy at the frequency between 0.915 and 2.45 GHz inclusive in hydrogen atmosphere at ambient pressure comprises an enclosed, insulated chamber (14) to retain a workpiece (12) for the application of mi |
| 6805835 |
Process for sintering powder metal components |
October 19, 2004 |
| A process for sintering green powder metal, metal alloy or metal composition parts employing microwave energy is described. |
| 6512216 |
Microwave processing using highly microwave absorbing powdered material layers |
January 28, 2003 |
| A method of heating an article with microwave energy is described in which a thin layer of highly microwave absorbent powdered material is provided around at least a portion of a container made of microwave transparent material. The article to be heated is placed at a position within the |
| 6365885 |
Microwave processing in pure H fields and pure E fields |
April 2, 2002 |
| Embodiments include a process including providing a microwave radiation source and a processing chamber. The process includes generating a region of pure magnetic field from the microwave radiation in the processing chamber. A region of pure electric field from the microwave radiation is |
| 6342195 |
Method for synthesizing solids such as diamond and products produced thereby |
January 29, 2002 |
| The present invention relates generally to methods for the synthesis of various solids such as diamonds, diamonds films, boron nitride and other similar materials. This invention specifically relates to utilizing novel sources of reaction species (e.g., in the case of diamond formation, |
| 6183689 |
Process for sintering powder metal components |
February 6, 2001 |
| A process for sintering green powder metal, metal alloy or metal composition parts employing microwave energy is described. |
| 6066290 |
Method and apparatus for transporting green work pieces through a microwave sintering system |
May 23, 2000 |
| This disclosure sets forth a method and apparatus for microwave processing of green work pieces. Typically, individual green work pieces are formed in a small mold cavity crucible, and individual crucibles are then indexed into and out of a tube for a controlled transit time along the tu |
| 6004505 |
Process and apparatus for the preparation of particulate or solid parts |
December 21, 1999 |
| The present disclosure is directed to a method of converting green particles to form finished particles. The apparatus used for sintering incorporates an elongate hollow tube, an insulative sleeve there about to define an elevated temperature zone, and a microwave generator coupled t |
| 5030592 |
Highly dense cordierite and method of manufacturing same |
July 9, 1991 |
| Compositionally triphasic nanocomposite gel is made by mixing two or more sols of ceramic precursor oxides. Such gel is then dried and ground to a fine powder which is pressed into compact bodies. The compact bodies are thereafter fired in a sintering oven at from 1100.degree. C. to |
| 4829031 |
Method of preparing ceramic compositions at lower sintering temperatures |
May 9, 1989 |
| Ceramic oxide diphasic xerogels of structurally dissimilar phases (crystalline and amorphous, semicrystalline or noncrystalline) but compositionally similar phases will be converted to crystalline ceramic oxide products having enhanced densification when subjected to substantially lo |
| 4808318 |
Process for cesium decontamination and immobilization |
February 28, 1989 |
| Cesium can be selectively recovered from a nuclear waste solution containing cesium together with other metal ions by contact with a modified phlogopite which is a hydrated, sodium phlogopite mica. Once the cesium has entered the modified phlogopite it is fixed and can be safely stor |
| 4801566 |
Low expansion ceramic |
January 31, 1989 |
| Crystalline solid solutions and diphasic mixtures having a composition of Ca.sub.1-x M.sub.x Zr.sub.4 P.sub.6 O.sub.24, where M is Ba and/or Sr and X is between about 0.25 and 0.75, have been produced which display both low anisotropy and near zero bulk thermal expansion behavior. |
| 4675302 |
Low expansion ceramic material |
June 23, 1987 |
| A low expansion ceramic composition is represented by the formula Ca.sub.0.5 Ti.sub.2 P.sub.3 O.sub.12 in which up to 100 percent of the Ca is replaced by one or more of the other alkaline earth metals and alkali metals, the alkali metals being selected from the group consisting of Na, |
| 4587172 |
Mirror substrate of atomically substituted Na Zr.sub.2 PO.sub.12 low expansion ceramic material |
May 6, 1986 |
| A low expansion ceramic material has a composition represented by the molecular formula i (Na) j (Zr.sub.2-z Na.sub.4z) k (P.sub.3-x Na.sub.x Si.sub.x)O.sub.12 in which the molar proportions i, j and k are each within the range from about 0.9 to about 1.1, and i+j+k equal 3; and, for |
| 4338215 |
Conversion of radioactive wastes to stable form for disposal |
July 6, 1982 |
| Radioactive waste material, such as that resulting from radioactive weapons plant operation or from nuclear fuel reprocessing, in suitable form, such as radionuclide-containing oxide and/or oxyhydroxide and/or hydroxide particles, is held by a metal or metal "alloy" to an electrically |
| 4252865 |
Highly solar-energy absorbing device and method of making the same |
February 24, 1981 |
| The invention contemplates a highly solar-energy absorbing device wherein the surface exposed to incident solar energy is a particularly characterized roughness of an amorphous semiconductor material, the particular characterization being that of an array of outwardly projecting stru |
