3720309

Information

• Patent Grant
• 3720309

• References
• Source

• Patent Number

  3,720,309

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  51 years ago

• CPC

  • H01L21/67271 - Sorting devices
  • B07C5/344 - according to electric or electromagnetic properties
  • H01L21/6836 - Wafer tapes
  • H01L2221/68327 - used during dicing or grinding
  • Y10S209/905 - Feeder conveyor holding item by suction
  • Y10S209/914 - Diverse sequential feeding steps
  • Y10S209/921 - Reciprocating or oscillating feed conveyor
  • Y10T156/1052 - with cutting, punching, tearing or severing
  • Y10T156/1776 - Means separating articles from bulk source

• US Classifications

  • 209 - Classifying, separating, and assorting solids
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 438 - Semiconductor device manufacturing: process