with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode

Introduced: September 1968

Last revised: January 2006

Full Title

Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons > Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field > with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

2 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

H01J 25/54 having only one cavity or other resonator, e.g. neutrode tubes
H01J 25/58 having a number of resonators; having a composite resonator, e.g. a helix

Top Applicants

Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT

TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
SAMSUNG ELECTRONICS COMPANY KR 42,206
LG CHEM KR 21,383
APPLIED MATERIALS US 20,441
LG ENERGY SOLUTION KR 20,279
SAMSUNG DISPLAY KR 19,725
CHINESE ACADEMY OF SCIENCES 19,400
TOYOTA MOTOR CORPORATION 18,819
SGCC(STATE GRID CORPORATION OF CHINA) 18,082
TOKYO ELECTRON JP 17,634