3881489

Information

• Patent Grant
• 3881489

• References
• Source

• Patent Number

  3,881,489

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1975
  49 years ago

• CPC

  • A61F13/51478 - being a laminate
  • A61F13/5146 - having apertures of perforations
  • B29C51/085 - with at least one of the shaping surfaces being made of resilien material
  • B29C51/22 - rotatable about an axis
  • B29C51/268 - Cutting, rearranging and joining the cut parts
  • B32B38/0032 - increasing porosity
  • A61F13/511 - Topsheet
  • A61F13/534 - having an inhomogeneous composition through the thickness of the pad
  • A61F13/537 - characterised by a layer facilitating or inhibiting flow in one direction or plane
  • A61F13/539 - characterised by the connection of the absorbent layers with each other or with the outer layers
  • A61F2013/15821 - characterized by the apparatus for manufacturing
  • A61F2013/51186 - specially shaped topsheets
  • A61F2013/51355 - for improving fluid flow
  • A61F2013/51372 - with valve or valve-like upper layer; Tapered capillary structures
  • A61F2013/51409 - being a film
  • A61F2013/51411 - being impervious to fluids but not for air or vapours
  • A61F2013/51427 - having valves
  • A61F2013/51492 - having specially shaped gas or air bubbles or bag-like structure
  • A61F2013/53445 - from several sheets
  • A61F2013/53782 - with holes
  • A61F2013/5395 - with thermoplastic agent
  • Y10T428/24322 - Composite web or sheet
  • Y10T428/249981 - Plural void-containing components

• US Classifications

  • 604 - Surgery
  • 428 - Stock material or miscellaneous articles