3847722

Information

• Patent Grant
• 3847722

• References
• Source

• Patent Number

  3,847,722

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • C08G18/4833 - Polyethers containing oxyethylene units
  • B29C67/0037 - Forming articles from a moulding composition enclosed in a deformable bag
  • C09K3/1021 - Polyurethanes or derivatives thereof
  • D06M17/10 - Polyurethanes polyurea
  • E02D37/00 - Repair of damaged foundations or foundation structures
  • B29K2075/00 - Use of PU
  • B29K2105/0854 - in the form of a non-woven mat
  • B29K2105/16 - Fillers
  • C08G2210/00 - Compositions for preparing hydrogels
  • C09K2200/0243 - Silica-rich compounds
  • Y10S528/904 - Isocyanate polymer having stated hydrophilic or hydrophobic property
  • Y10T428/239 - Complete cover or casing
  • Y10T428/2424 - Annular cover
  • Y10T428/24248 - One piece
  • Y10T428/31598 - Next to silicon-containing [silicone, cement, etc.] layer

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 138 - Pipes and tubular conduits
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 166 - Wells
  • 206 - Special receptacle or package
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 404 - Road structure, process, or apparatus
  • 405 - Hydraulic and earth engineering
  • 528 - Synthetic resins or natural rubbers