3811319

Information

• Patent Grant
• 3811319

• References
• Source

• Patent Number

  3,811,319

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • G01N30/722 - through a gas permeable barrier (membranes, porous layers)
  • B01D53/22 - by diffusion
  • B01D53/226 - in serial connexion
  • B01D53/228 - characterised by specific membranes
  • B01D53/268 - by diffusion
  • G01N1/34 - Purifying Cleaning
  • G01N2001/4016 - being a selective membrane

• US Classifications

  • 073 - Measuring and testing
  • 096 - Gas separation: apparatus