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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Forman; Ralph
Address:
Rocky River, OH
No. of patents:
9
Patents:












Patent Number Title Of Patent Date Issued
5083958 Field emitter structure and fabrication process providing passageways for venting of outgassed m January 28, 1992
Outgassed materials liberated in spaces between pointed field emitter tips and an electrode structure during electrical operation of a field emitter device are vented through passageways to a pump or gettering material provided in a separate space. The passageways may include channels fo
5065070 Sputtered scandate coatings for dispenser cathodes November 12, 1991
A low work function surface for a dispenser cathode structure. The cathode structure comprising a heater and an electron emitting surface substrate or core composed of a porous tungsten matrix impregnated with a barium containing impregnant distributed therethrough. The structure is made
5063323 Field emitter structure providing passageways for venting of outgassed materials from active ele November 5, 1991
Outgassed materials liberated in spaces between pointed field emitter tips and an electrode structure during electrical operation of a field emitter device are vented through passageways to a pump of gettering material provided in a separate space. The passageways may include channels fo
5041757 Sputtered scandate coatings for dispenser cathodes and methods for making same August 20, 1991
A low work function surface for a dispenser cathode structure. The cathode structure comprising a heater and an electron emitting surface substrate or core composed of a porous tungsten matrix impregnated with a barium containing impregnant distributed therethrough. The structure is made
5038070 Field emitter structure and fabrication process August 6, 1991
A plurality of field emitters in the form of hollow, upstanding pointed cones or pyramids formed by a molding process extend from a surface of an electrically conductive layer. An electrically conductive mesh is adhered to an opposite surface of the conductive layer by a high temperature
4943343 Self-aligned gate process for fabricating field emitter arrays July 24, 1990
Conical field emitter elements are formed on a surface of a substrate after which a layer of metal is deposited on top of the substrate surface and over the field emitter elements. A layer of oxide is then deposited over the metal layer. Another layer of metal is deposited over the layer
4687964 Apparatus for mounting a field emission cathode August 18, 1987
A field emission cathode 12 is positioned in a pair of intersecting cross grooves 30, 32 in the end of a ceramic tube 14 by a metal end cap 24. A spring 34 in electrical contact with the base of the cathode provides the necessary pressure to maintain continuous circumferential electrical
4417175 Ion sputter textured graphite electrode plates November 22, 1983
A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons. Electrode plates of this material are used in multistage depressed collectors.An
4349424 Ion sputter textured graphite September 14, 1982
A specially textured surface of pyrolytic graphite exhibits extremely low yields of secondary electrons and reduced numbers of reflected primary electrons after impingement of high energy primary electrons.An ion flux having an energy between 500 eV and 1000 eV and a current density betw










 
 
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