3816704

Information

• Patent Grant
• 3816704

• References
• Source

• Patent Number

  3,816,704

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • H05B3/748 - Resistive heating elements, i.e. heating elements exposed to the air
  • C03C3/097 - containing phosphorus, niobium or tantalum
  • C03C4/00 - Compositions for glass with special properties
  • C03C10/0009 - containing silica as main constituent
  • C03C10/0027 - containing SiO2, Al2O3, Li2O as main constituents
  • C03C10/0036 - containing SiO2, Al2O3 and a divalent metal oxide as main constituents
  • C03C10/0054 - containing PbO, SnO2, B2O3
  • F24C15/10 - Tops
  • H05B3/688 - Fabrication of the plates
  • C03C2204/04 - Opaque glass, glaze or enamel
  • Y10S252/962 - Temperature or thermal history

• US Classifications

  • 219 - Electric heating
  • 252 - Compositions
  • 392 - Electric resistance heating devices
  • 436 - Chemistry: analytical and immunological testing
  • 501 - Compositions: ceramic