3669696

Information

• Patent Grant
• 3669696

• References
• Source

• Patent Number

  3,669,696

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • C03C3/253 - containing germanium
  • C03C3/068 - containing rare earths
  • C03C3/15 - containing rare earths
  • C03C3/155 - containing zirconium, titanium, tantalum or niobium
  • Y10S501/903 - having refractive index less than 1.8 and ABBE number less than 70
  • Y10S501/906 - Thorium oxide containing

• US Classifications

  • 501 - Compositions: ceramic