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IPC Subgroup
C03B 5/18

Stirring devices; Homogenisation

Introduced: September 1968

Last revised: January 2006

Full Title

Melting in furnaces; Furnaces so far as specially adapted for glass manufacture > Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces > Stirring devices; Homogenisation

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
GLASS; MINERAL OR SLAG WOOL
Subclass:
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL

Related Keywords

MIXING of molten glass

4 direct subcodes

Child Classifications

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  • C03B 5/182 by moving the molten glass along fixed elements, e.g. deflectors, weirs, baffle plates
  • C03B 5/187 with moving elements
  • C03B 5/193 using gas, e.g. bubblers

Top Applicants

Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CORNING US 8,800
  2. SAINT-GOBAIN GLASS FR 3,535
  3. NIPPON ELECTRIC GLASS COMPANY JP 2,675
  4. NIPPON ELECTRIC GLASS COMPANY 2,616
  5. AGC JP 1,911
  6. SCHOTT DE 1,846
  7. ASAHI GLASS COMPANY JP 1,632
  8. CORNING 1,556
  9. A G C 1,250
  10. SEKISUI CHEMICAL COMPANY JP 1,087