Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of making a field emission cold cathode










Image Number 2 for United States Patent #6875462.

A method for making a field emission cold cathode for use in vacuum tubes. A carbon velvet material is coated with a low work function cesiated salt and bonded to a cathode surface. Alternatively, the carbon velvet material is bonded to the cathode surface before being coated with the cesiated salt. The coating may be applied by spraying the carbon velvet material with a cesiated salt solution, or by dipping the material into a crucible of molten cesiated salt. This abstract is provided to comply with the rules requiring an abstract, and is intended to allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning the claims.








 
 
  Recently Added Patents
Recombinant vectors for use in position-independent transgene expression within chromatin
Fuel cell support structure
Lock
Caching techniques
Plants and seeds of hybrid corn variety CH450823
Method for forming a semiconductor device using selective epitaxy of group III-nitride
Method and device for detecting the dysfunction of a gas pressure sensor in a vehicle tire
  Randomly Featured Patents
Furnace enclosure or the like
Phase-angle checking apparatus
Rail road platform safety apparatus
Device for packaging and applying a cosmetic or care product
Wafer carrier with pressurized membrane and retaining ring actuator
Systems for genome selection
Deflection angle measuring device, optical signal switching system, information recording and replaying system, deflection angle measuring method, and optical signal switching method
Mesh network for laser-trimmed integrated circuit resistors
Cryopulverizing and post-treatment of flavoring materials
Disease management system and method