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
Method for providing location independent dynamic port mirroring on distributed virtual switches
Solar-powered toy car
Fully X-tolerant, very high scan compression scan test systems and techniques
Thymidine kinase
Method to improve fuel cell system performance using cell voltage prediction of fuel cell stack
Workflow system and method for single call batch processing of collections of database records
ATM that allows a user to select a desired transaction by touch dragging a displayed icon that represents the desired transaction
  Randomly Featured Patents
System for optimizing driving parameters in utility vehicles
Storage tank containing liquefied natural gas with butane
Case block table for predicting the outcome of blocks of conditional branches having a common operand
Apparatus and method for generating a tracking error signal using first through fourth optical detector elements
Multi-threaded database system for an interactive voice response platform
Calorimetric fiber optic chemical sensor
Scanning suspension comprising a particle with a diameter of at least 1 micrometer
Incubator with remote control and display module
Push-on coupling apparatus for tubular well completion structures
Intelligent grid system