3776989

Information

• Patent Grant
• 3776989

• References
• Source

• Patent Number

  3,776,989

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1973
  51 years ago

• CPC

  • B29C44/421 - by plastizising the material into a shot cavity and injecting using a plunger
  • Y10S264/05 - Use of one or more blowing agents together
  • Y10S264/16 - Molding foamed polypropylen articles
  • Y10S264/83 - Injection molding of polyolefin-type foam
  • Y10T428/249989 - Integrally formed skin

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 428 - Stock material or miscellaneous articles
  • 521 - Synthetic resins or natural rubbers