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Class Information
Number: 313/341
Name: Electric lamp and discharge devices > Electrode and shield structures > Filament or resistance heated electrodes
Description: Electrodes which are either, (1) filaments, or (2) of the type which are designed to be heated by the flow of electric current through the electrode.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7595490 |
Charged particle beam emitting device and method for operating a charged particle beam emitting device |
Sep. 29, 2009 |
| 7544951 |
Electron gun assembly |
Jun. 9, 2009 |
| 7471035 |
Internal conductively-heated cathode |
Dec. 30, 2008 |
| 7468576 |
Multi-segment filament high output halogen lamp |
Dec. 23, 2008 |
| 7456558 |
Electric incandescent lamp provided with different pitch factors for each end of a filament component |
Nov. 25, 2008 |
| 7368870 |
Radiation emitting structures including photonic crystals |
May. 6, 2008 |
| 7355186 |
Charged particle beam device with cleaning unit and method of operation thereof |
Apr. 8, 2008 |
| 7322871 |
Process to make nano-structured emitters for incandescence light sources |
Jan. 29, 2008 |
| 7321188 |
Light filament formed from carbon nanotubes |
Jan. 22, 2008 |
| 7271530 |
Filament for X-ray tube and X-ray tube having the same |
Sep. 18, 2007 |
| 7218047 |
Indirectly heated electrode for gas discharge tube |
May. 15, 2007 |
| 7180231 |
Electron beam emitter |
Feb. 20, 2007 |
| 7049735 |
Incandescent bulb and incandescent bulb filament |
May. 23, 2006 |
| 6979942 |
Cathode emissive body for an impregnated cathode of an electron tube |
Dec. 27, 2005 |
| 6972522 |
Magnetron |
Dec. 6, 2005 |
| 6882093 |
Long-life electron tube device, electron tube cathode, and manufacturing method for the electron tube device |
Apr. 19, 2005 |
| 6853119 |
Double layer electrode coil for a HID lamp and method of making the electrode coil |
Feb. 8, 2005 |
| 6812626 |
Light source with matrix of microfilaments |
Nov. 2, 2004 |
| 6803709 |
Directly-heated oxide cathode and fluorescent display tube using the same |
Oct. 12, 2004 |
| 6800989 |
Method of forming filament for electron beam emitter |
Oct. 5, 2004 |
| 6798128 |
Cathode-ray tube cathode and alloy therefor |
Sep. 28, 2004 |
| 6759798 |
Structure of capsule for rapidly expanding metallic mixture |
Jul. 6, 2004 |
| 6707240 |
Electron gun and electron beam exposure device |
Mar. 16, 2004 |
| 6646366 |
Directly heated thermionic flat emitter |
Nov. 11, 2003 |
| 6630774 |
Electron beam emitter |
Oct. 7, 2003 |
| 6624555 |
Directly heated thermionic flat emitter |
Sep. 23, 2003 |
| 6616756 |
Protection for a carbon material, in particular C/C composite, bowl that is to receive a crucible, such as a silica crucible for drawing silicon |
Sep. 9, 2003 |
| 6608442 |
Flat bulb |
Aug. 19, 2003 |
| 6514420 |
Point-of use water treatment system |
Feb. 4, 2003 |
| 6492768 |
Cathode ray tube having an improved indirectly heated cathode |
Dec. 10, 2002 |
| 6469447 |
Fluorescent lamp lighting apparatus |
Oct. 22, 2002 |
| 6426587 |
Thermionic emitter with balancing thermal conduction legs |
Jul. 30, 2002 |
| 6417607 |
Cold electrode for gas discharges |
Jul. 9, 2002 |
| 6404115 |
Particle beam emitting assembly |
Jun. 11, 2002 |
| 6259193 |
Emissive filament and support structure |
Jul. 10, 2001 |
| 6191527 |
Stress relieved filament support assembly |
Feb. 20, 2001 |
| 6124666 |
Electron tube cathode |
Sep. 26, 2000 |
| 5959398 |
Cathode ray tube with improved cathode structure |
Sep. 28, 1999 |
| 5861716 |
Magnetron having a cathode mount with a grooved recess for securely receiving a cathode filament |
Jan. 19, 1999 |
| 5729082 |
Cathode structure comprising a heating element |
Mar. 17, 1998 |
| 5708326 |
Rhenium tungsten alloy wire for use in a filamentary cathode of a fluorescent display device |
Jan. 13, 1998 |
| 5680003 |
Coiled-coil filament design for an incandescent lamp |
Oct. 21, 1997 |
| 5629716 |
Luminescent panel for color video display and its driving system, and a color video display apparatus utilizing the same. |
May. 13, 1997 |
| 5621269 |
Cathode assembly of a magnetron |
Apr. 15, 1997 |
| 5606141 |
Electrical conductor in lamps |
Feb. 25, 1997 |
| 5552660 |
Fluorescent display device including a filamentary cathode with increased mechanical strength and reduced end cooling effect |
Sep. 3, 1996 |
| 5517077 |
Ion implantation having increased source lifetime |
May. 14, 1996 |
| 5391433 |
Carbon material for electrodes and process for preparing it |
Feb. 21, 1995 |
| 5389853 |
Incandescent lamp filament with surface crystallites and method of formation |
Feb. 14, 1995 |
| 5357747 |
Pulsed mode cathode |
Oct. 25, 1994 |
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