1. CPC Sections
  2. CPC Section H
  3. CPC Class H05
  4. CPC Subclass H05G
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Version: 2023.05
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
H05G
X-RAY TECHNIQUE (investigating or analysing materials by the use of X-rays G01N 23/00; apparatus for X-ray photography G03B 42/02; X-ray tubes H01J 35/00; TV systems having X-ray input H04N 5/321) [2023-02]
WARNINGS

  • The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:
    H05G1/61 covered by H05G 1/60
  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
H05G 1/00
X-ray apparatus involving X-ray tubes; Circuits therefor [2017-08]
H05G 1/02
.
Constructional details [2013-01]
H05G 1/025
. .
{Means for cooling the X-ray tube or the generator} [2013-01]
H05G 1/04
. .
Mounting the X-ray tube within a closed housing [2013-01]
H05G 1/06
. . .
X-ray tube and at least part of the power supply apparatus being mounted within the same housing [2013-01]
H05G 1/08
.
Electrical details [2013-01]
H05G 1/085
. .
{Circuit arrangements particularly adapted for X-ray tubes having a control grid} [2013-01]
H05G 1/10
. .
Power supply arrangements for feeding the X-ray tube {(supply circuits with converters in general H02M; supply circuits for emitters and amplifiers H04B 1/16 - H04B 1/1623)} [2016-05]
H05G 1/12
. . .
with dc or rectified single-phase ac {or double-phase} [2013-01]
H05G 1/14
. . .
with single-phase low-frequency ac {also when a rectifer element is in series with the X-ray tube} [2013-01]
H05G 1/16
. . . .
Reducing the peak-inverse voltage [2013-01]
H05G 1/18
. . .
with polyphase ac of low frequency {rectified} [2013-01]
H05G 1/20
. . .
with high-frequency ac; with pulse trains {(pulse generators in general H03K 3/00, H03K 4/00)} [2013-01]
H05G 1/22
. . .
with single pulses [2013-01]
H05G 1/24
. . . .
Obtaining pulses by using energy storage devices [2023-02]
H05G 1/26
. .
Measuring, controlling or protecting (measuring X-ray radiation G01T) [2023-02]
H05G 1/265
. . .
{Measurements of current, voltage or power} [2013-01]
H05G 1/28
. . .
Measuring or recording actual exposure time; Counting number of exposures; Measuring required exposure time [2013-01]
H05G 1/30
. . .
Controlling [2013-01]
H05G 1/32
. . . .
Supply voltage of the X-ray apparatus or tube [2023-02]
H05G 1/34
. . . .
Anode current, heater current or heater voltage of X-ray tube [2023-02]
H05G 1/36
. . . .
Temperature of anode; Brightness of image {power (electrical temperature regulating in general G05D 23/19)} [2017-08]
H05G 1/38
. . . .
Exposure time {(time switches in general H01H 43/00 and subgroups)} [2017-08]
H05G 1/40
. . . . .
using adjustable time-switch [2013-01]
H05G 1/42
. . . . .
using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube [2013-01]
H05G 1/44
. . . . . .
in which the switching instant is determined by measuring the amount of radiation directly {(dosimetry in general G01T 1/02)} [2013-01]
H05G 1/46
. . . .
Combined control of different quantities, e.g. exposure time as well as voltage or current [2013-01]
H05G 1/48
. . . .
Compensating the voltage drop occurring at the instant of switching-on of the apparatus [2023-02]
H05G 1/50
. . . .
Passing the tube current only during a restricted portion of the voltage waveform [2013-01]
H05G 1/52
. . . .
Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode [2017-08]
H05G 1/54
. . .
Protecting {or lifetime prediction}(overload protection combined with control H05G 1/46) [2013-01]
H05G 1/56
. .
Switching-on; Switching-off [2013-01]
H05G 1/58
. .
Switching arrangements for changing-over from one mode of operation to another, e.g. from radioscopy to radiography, from radioscopy to irradiation {or from one tube voltage to another} [2019-05]
H05G 1/60
. .
Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography [2013-01]
H05G 1/62
. .
Circuit arrangements for obtaining X-ray photography at predetermined instants in the movement of an object, e.g. X-ray stroboscopy [2013-01]
H05G 1/64
. .
Circuit arrangements for X-ray apparatus incorporating image intensifiers [2016-11]
H05G 1/66
. .
Circuit arrangements for X-ray tubes with target movable relatively to the anode [2017-08]
H05G 1/68
. .
Circuit arrangements for Lilienfield tubes; Circuit arrangements for gas-filled X-ray tubes [2013-01]
H05G 1/70
. .
Circuit arrangements for X-ray tubes with more than one anode; Circuit arrangements for apparatus comprising more than one X ray tube {or more than one cathode (H05G 1/58 takes precedence)} [2013-01]
H05G 2/00
Apparatus or processes specially adapted for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma (X-ray lasers H01S 4/00) [2023-02]
H05G 2/001
.
{X-ray radiation generated from plasma (plasma for generation of electrons to be accelerated towards an anode H01J 35/00)} [2013-01]
H05G 2/003
. .
{being produced from a liquid or gas} [2013-01]
H05G 2/005
. . .
{containing a metal as principal radiation generating component} [2013-01]
H05G 2/006
. . .
{details of the ejection system, e.g. constructional details of the nozzle} [2013-01]
H05G 2/008
. .
{involving a beam of energy, e.g. laser or electron beam in the process of exciting the plasma} [2013-01]