3567520

Information

• Patent Grant
• 3567520

• References
• Source

• Patent Number

  3,567,520

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1971
  53 years ago

• CPC

  • H01M4/8807 - Gas diffusion layers
  • B01J37/32 - Freeze drying
  • B22F3/222 - by freeze-casting or in a supercritical fluid
  • H01M4/861 - with a gradient in the porosity
  • H01M4/8642 - Gradient in composition
  • H01M4/8817 - Treatment of supports before application of the catalytic active composition
  • H01M8/0245 - in the form of layered or coated products
  • Y02E60/50 - Fuel cells
  • Y02P70/56 - Manufacturing of fuel cells

• US Classifications

  • 502 - Catalyst, solid sorbent, or support therefor: product or process of making
  • 034 - Drying and gas or vapor contact with solids
  • 427 - Coating processes