Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/42
Name: Amplifiers > With secondary electron emission tube amplifying device
Description: Subject matter wherein the amplifying device is a vacuum tube including a secondary electron emissive electrode.

Patents under this class:

Patent Number Title Of Patent Date Issued
7332700 Photomultiplier tube with dynode modulation for photon-counting Feb. 19, 2008
7098434 Method for extracting measuring signals from a multi-channel photomultipier and corresponding circuit Aug. 29, 2006
6984940 Electronic tube with simplified collector Jan. 10, 2006
6895096 Microchannel plate audio amplifier May. 17, 2005
6870308 Electron amplifier utilizing carbon nanotubes and method of manufacturing the same Mar. 22, 2005
5348934 Secondary emission cathode having supeconductive oxide material Sep. 20, 1994
5150067 Electromagnetic pulse generator using an electron beam produced with an electron multiplier Sep. 22, 1992
5115667 Circuit for processing a signal received by an electron multiplier May. 26, 1992
4975656 Enhanced secondary electron emitter Dec. 4, 1990
4763043 P-N junction semiconductor secondary emission cathode and tube Aug. 9, 1988
4086487 Coplanar dynode electron multiplier Apr. 25, 1978
3943458 Reducing gain shifts in photomultiplier tubes Mar. 9, 1976

  Recently Added Patents
Dual source mass spectrometry system
Electronic document reading devices
Reusing data in user run book automation
Soliciting first party in communication session to maintain call when degradation of connection to second party is anticipated
Driver circuit for driving semiconductor switches
Active matrix substrate, method for manufacturing same, and liquid crystal display apparatus
Vectorization of program code
  Randomly Featured Patents
Oral suspension of phenytoin
Image signal processing device and image signal processing method
Diamond cutting tool and method of manufacturing the same
Electrically controlled rate integrating device
Method and system for testing internal combustion engine computerized control units
Data latch circuit
Coiled handle for utensils
Method of processing data
Systems and methods for a cognitive radio having adaptable characteristics
Substituted cyclic ketones, substituted cyclic enones, and process for producing the same