3817781

Information

• Patent Grant
• 3817781

• References
• Source

• Patent Number

  3,817,781

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • C04B41/009 - characterised by the material treated
  • C04B33/32 - Burning methods
  • C04B35/111 - Fine ceramics
  • C04B35/622 - Forming processes Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
  • C04B41/5033 - Chromium oxide
  • C04B41/52 - Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
  • C04B41/85 - with inorganic materials
  • C04B41/87 - Ceramics
  • C04B41/89 - for obtaining at least two superposed coatings having diffferent compositions
  • F02B2075/027 - four
  • Y10T428/1234 - Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components [e.g., parallel, inter- secting, etc.]
  • Y10T428/252 - Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
  • Y10T428/31 - Surface property or characteristic of web, sheet or block
  • Y10T428/31536 - Including interfacial reaction product of adjacent layers

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 427 - Coating processes
  • 501 - Compositions: ceramic