3873181

Information

• Patent Grant
• 3873181

• References
• Source

• Patent Number

  3,873,181

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  50 years ago

• CPC

  • G06E3/001 - Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements
  • B41M5/283 - Inorganic thermochromic compounds
  • G03H1/02 - Details of features involved during the holographic process; Replication of holograms without interference recording
  • G03H2001/0066 - for wavefront matching wherein the hologram is arranged to convert a predetermined wavefront into a comprehensive wave
  • G03H2222/16 - Infra Red [IR]
  • G03H2224/06 - Thermal or photo-thermal means
  • G03H2240/22 - Chromatic variations
  • Y10S209/90 - Sorting flat-type mail
  • Y10S430/165 - Thermal imaging composition

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof
  • 209 - Classifying, separating, and assorting solids
  • 250 - Radiant energy
  • 356 - Optics: measuring and testing
  • 359 - Optical: systems and elements
  • 382 - Image analysis