Class H01J : ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
Subclass 1/146: Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical arrangements or of ion traps H01J 3/00) Main electrodes Solid thermionic cathodes characterised by the material with metals or alloys as an emissive material
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12237137 | Method and apparatus for reducing the work function of polycrystalline metal hexaboride | Apr 02, 21 | Feb 25, 25 | California Institute of Technology |
| 12027340 | Pincer mount cathode | Nov 15, 23 | Jul 02, 24 | Kimball Physics Inc. |
| 12014894 | Electron source, method for manufacturing same, and device provided with electron source | Dec 20, 21 | Jun 18, 24 | DENKA COMPANY LIMITED |
| 11984291 | Electron source, method for manufacturing same, and device provided with electron source | Dec 20, 21 | May 14, 24 | DENKA COMPANY LIMITED |
| 11195686 | Thermionic emission device and method for making the same | Oct 11, 20 | Dec 07, 21 | Tsinghua University; Hon Hai Precision Industry Co., Ltd; |
| 11075049 | Thermionic tungsten/scandate cathodes and method of making the same | Oct 15, 19 | Jul 27, 21 | The Government of the United States of America, as represented by the Secretary of the Navy |
| 10727021 | Electron emission element, electrification apparatus, and image forming apparatus | Jul 14, 17 | Jul 28, 20 | SHARP KABUSHIKI KAISHA |
| 10714292 | Method of fabricating tungsten scandate nano-composite powder for cathodes | Aug 01, 17 | Jul 14, 20 | The Regents of the University of California |
| 10497530 | Thermionic tungsten/scandate cathodes and methods of making the same | Apr 08, 16 | Dec 03, 19 | The Government of the United States of America, as represented by the Secretary of the Navy |
| 10121627 | Ion pump noble gas stability using small grain sized cathode material | Oct 26, 17 | Nov 06, 18 | Edwards Vacuum LLC |
| 10026582 | Thermionic emission filament, quadrupole mass spectrometer and residual gas analyzing method | Dec 07, 16 | Jul 17, 18 | Horiba Stec Co. Ltd. |
| 9502201 | Tungsten electrode material and thermionic emission current measuring device | Dec 08, 09 | Nov 22, 16 | A.L.M.T. CORP. |
| 9490098 | Thermal-field type electron source composed of transition metal carbide material | Jan 11, 16 | Nov 08, 16 | Applied Physics Technologies, Inc. |
| 9240301 | Thermal-field type electron source composed of transition metal carbide material with artificial facet | Mar 27, 13 | Jan 19, 16 | Applied Physics Technologies, Inc. |
| 9236212 | Tungsten wire, cathode heater and vibration service lamp filament | May 15, 12 | Jan 12, 16 | KABUSHIKI KAISHA TOSHIBA |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2022/0336,179 | CATHODE MEMBER FOR ELECTRON BEAM GENERATION, AND METHOD FOR MANUFACTURING THE SAME | Aug 28, 20 | Oct 20, 22 | KOBELCO RESEARCH INSTITUTE, INC. |
| 2020/0066,474 | CATHODES WITH CONFORMAL CATHODE SURFACES, VACUUM ELECTRONIC DEVICES WITH CATHODES WITH CONFORMAL CATHODE SURFACES, AND METHODS OF MANUFACTURING THE SAME | Jun 04, 19 | Feb 27, 20 | Modern Electron, LLC |
| 2017/0358,419 | METHOD OF FABRICATING TUNGSTEN SCANDATE NANO-COMPOSITE POWDER FOR CATHODES | Aug 01, 17 | Dec 14, 17 | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
| 2017/0169,981 | THERMIONIC EMISSION FILAMENT, QUADRUPOLE MASS SPECTROMETER AND RESIDUAL GAS ANALYZING METHOD | Dec 07, 16 | Jun 15, 17 | HORIBA STEC, CO., LTD. |
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