3619438

Information

• Patent Grant
• 3619438

• References
• Source

• Patent Number

  3,619,438

• Date Filed

  Not available

• Date Issued

  Tuesday, November 9, 1971
  53 years ago

• CPC

  • B29C44/3453 - Feeding the blowing agent to solid plastic material
  • B29C44/04 - consisting of at least two parts of chemically or physically different materials
  • B29C44/3446 - Feeding the blowing agent
  • B29C44/58 - Moulds
  • B29C51/365 - Porous moulds
  • C08J9/147 - containing carbon and halogen atoms only
  • B29C33/3814 - Porous moulds
  • Y10S264/05 - Use of one or more blowing agents together

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus