Patent · US Expired

Microwave oven and magnetron with cold cathode

US5676873A · kind A · utility

14Cited by
7References
26Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 21, 1995
Grant dateOct 14, 1997
Priority date
Expiry dateJun 21, 2015

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01J2225/50
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

There is provided a magnetron comprising a cold cathode having an electron emitting member which is formed linearly or as a plane on a substrate to emit electrons a subdivided anode disposed oppositely in parallel with the electron emitting member, the subdivided anode having cavity resonators formed therein at the side of the cold cathode, and a magnet which producing a magnetic field lying at right angles to an electric field applied between the cold cathode and the subdivided anode. There is also provided a microwave oven for dielectric-heating a substance to be heated by using the magnetron as a microwave supply source.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.