U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Absorbent means for catamenial devices

Patent 4239043 Issued on December 16, 1980. Estimated Expiration Date: Icon_subject November 29, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3024207

3463745

3815601

3900030

Foam aggregate catamenial tampon Patent #: 3994298
Issued on: 11/30/1976
Inventor: Des Marais

Inventor

Assignee

Application

No. 05/964842 filed on 11/29/1978

US Classes:

604/15, With slidable ejector (e.g., plunger or ram, etc.) inside tubular inserting means428/313.5, Resin or rubber element428/317.9, Void-containing component contains also a solid fiber or solid particle604/369, Foam or cellular structure material604/372, Synthetic resin604/376, Carboxy-radical containing604/381, Layer coated or treated to decrease absorbency604/904TAMPONS

Examiners

Primary: Rosenbaum, C. Fred

Attorney, Agent or Firm

International Classes

A61F 13/20 (20060101)
A61L 15/16 (20060101)
A61L 15/42 (20060101)

Abstract

The object of the invention is to provide an improved absorbent means that can be used in a catamenial device.The improved absorptive means comrpises a foam means having an absorbency improvement means at least arrayed on the surface of the foam means wherein the absorbency improvement means is adherent to the foam, hydrophilic, and has a high surface area. The foam means is preferably cut into small blocks made of hydrophilic polyester foam or hydrophilic polyurethane foam. Absorbency improvement means is preferably cellulose fibers.A tampon incorporating the improved absorbent means has overwrap 11 containing an aggregate absorbent body 12 comprising foam blocks coated with fibrous material 16 and ancillary absorbent material 17. The overwrap 11 is sealed by a side seam 13 and knotted at one end with a withdrawal string 15. The fiber coated foam blocks offer improved rate of absorbency, volume of absorbency, and retention of liquid under pressure due to more efficient utilization of the maximum absorbent capacity of the tampon. The fibrous coating of the foam blocks functions to wick liquid between a plurality of hydrophilic foam blocks and into the center of the foam blocks.

PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$16.95more info
 
Sign InRegister
Username  
Password   
forgot password?