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
Electronic device package and fabrication method thereof
System and method for deriving cell global identity information
Preparation and its use of derivatization reagent for detecting L-carnitine or D-carnitine
System for targeted delivery of therapeutic agents
Method of sending CTI messages in a communication system
One-dimensional metal nanostructures
Multi-channel memory system including error correction decoder architecture with efficient area utilization
  Randomly Featured Patents
Method for reducing translation look aside buffer purges in a multitasking system
Image forming apparatus including a counting section for counting the toner image
Semiconductor memory device with vertical channel formed on semiconductor pillars
Mechanism for avoiding triggering silent radio squelch circuits
Liquid waste disposal and canister flushing system and method
Heterocyclic compounds and salts thereof and medicinal use of the same
Method and apparatus for adjustably directing granular material out of a container and reducing outlet pressure in the container
Rotor of magneto generator for internal combustion engine
Asymmetric radiation dosing apparatus and method
Rotary dobby