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
Management of temporal data by means of a canonical schema
Determination of copy number variations using binomial probability calculations
Forming agent for gate insulating film of thin film transistor
Optical module for a microlithography objective including holding and supporting devices
Output device, source apparatus, television set, system, output method, program, and recording medium
Visual processing apparatus and visual processing method
Power-on reset circuit
  Randomly Featured Patents
Gate valve
Signal error generating circuit for an analog signal processing channel
2-acylaminopropanol compound and medical composition
Methods of generating variant antibodies with increased host string content
Phenolic compounds derived from dialkoxyethanals, their preparation process and their application
PSCA: prostate stem cell antigen and uses thereof
Apparatus and process for making cut extruded hollow profiles
Multiplex speech transmission system with speech analysis-synthesis
Electronic control for fuel injection