IPC Definitions - January 01, 2012

H01J - Definition fr

Definition statement

This subclass covers:

Devices, i.e. electric discharge tubes or discharge lamps, for producing, influencing, or using a flow of electrons or ions, and having a closed or substantially closed casing containing a chosen gas, vapour, or vacuum, upon the pressure and nature of which the characteristics of the device depend. Examples include devices for controlling, indicating, or switching electric current, counting electric pulses, producing light or other electromagnetic oscillations, such as X-rays, or for separating or analysing radiation or particles.

Details of electric discharge tubes or discharge lamps, including details applicable to both discharge devices and incandescent lamps.

Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof, including apparatus and processes for manufacture applicable to both discharge devices and incandescent lamps.

Recovery of material from discharge tubes or discharge lamps.

Relationship between large subject matter areas

NONE

References relevant to classification in this subclass

This subclass does not cover:

Emission spectrometry

G01J 3/443

Spark gaps, including gas-filled spark gaps

H01T

Arc lamps with consumable electrodes

H05B

Particle accelerators

H05H
Examples of places where the subject matter of this subclass is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Isotope separation using separate tubes

B01D 59/44

Investigating or analyzing surface structures in atomic ranges using scanning-probe techniques

G01Q 10/00-G01Q 90/00

Investigating or analyzing electrically excited material, e.g. electroluminescence

G01N 21/66

Analyzing materials by investigating the ionization of gases; by investigating electric discharges, e.g. emission of cathode

G01N 27/62

Mass spectrometers specially adapted for column chromatography

G01N 30/72

Contactless testing of electronic circuits using electron beams

G01R 31/305

Electrostatic dosimeters in general

G01T 1/14

Secondary-emission measurement of nuclear or X-radiation

G01T 1/28

Details of scanning-probe apparatus in general

G01Q 10/00-G01Q 90/00

Gas lasers pumped by electric discharges

H01S

Generating ions to be introduced into non-enclosed gases

H01T 23/00

Tubes for generating potential differences by charges carried on a gas stream

H02N

Light sources using a combination of discharge and other kinds of light generation (other than those covered in group H01J 61/96)

H05B 35/00

Generating plasma in general

H05H 1/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electric incandescent lamps

H01K

Special rules of classification

In this subclass, groups H01J 1/00-H01J 7/00 relate only to:

Details of an unspecified kind of discharge tube or lamp, or

Details mentioned in a specification as applicable to two or more kinds of tubes or lamps as defined by groups H01J 11/00-H01J 17/00H01J 21/00, H01J 25/00-H01J 27/00H01J 31/00-H01J 41/00, H01J 47/00-H01J 65/00, hereinafter called basic kinds. A detail only described with reference to, or clearly only applicable to, tubes or lamps of a single basic kind is classified in the detail group appropriate to tubes or lamps of that basic kind, e.g. H01J 17/04.

In this subclass, group H01J 9/00 relates to apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof.

Glossary of terms

In this subclass, the following terms or expressions are used with the meaning indicated:

Lamp

In this subclass, "lamp" includes tubes emitting visible, ultra-violet or infra-red light.

Spark Gap

A "spark gap" is an enclosed or non-enclosed discharge device having cold electrodes and used exclusively to discharge a quantity of electrical energy in a small time duration.

Spectrometer

An instrument used to disperse radiant energy or particles into a spectrum and measure properties such as wavelength, mass, energy, or index of refraction.