3844637

Information

• Patent Grant
• 3844637

• References
• Source

• Patent Number

  3,844,637

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1974
  50 years ago

• CPC

  • G02F1/13762 - containing luminescent or electroluminescent additives
  • C09K19/22 - linked by a chain containing carbon and nitrogen atoms as chain links
  • C09K2019/0433 - the specific unit being a luminescent or electroluminescent unit

• US Classifications

  • 349 - Liquid crystal cells, elements and systems
  • 252 - Compositions