Resources Contact Us Home
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
Network based technique for obtaining operator identifier for mobile devices
Camera body, and camera system
Methods to fabricate a photoactive substrate suitable for microfabrication
Encoder that optically detects positional information of a moving body from different optical paths lengths
Method and device for peer arrangement in single substream upload P2P overlay networks
Dual use photovoltaic system
Electronic hand-held device
  Randomly Featured Patents
Process for producing diorganopolysiloxane
Key for quick change for turret pocket
Self mixing sprayer
Separation of water from Fischer-Tropsch product
Manhole liner including felt impregnated vinyl
Miniaturized external cavity laser (ECL) implemented with acoustic optical tunable filter
Method and software-implemented apparatus for ground plane estimation in multi-dimensional data
Wide illumination range photoluminescent lamp
Shape memory alloy actuation
Martial arts shoe and sole