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US4061145A
Expired / Lapsed
US
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Absorbent foam articles and method of manufacture
Assignee: Procter and Gamble Co
•
Filing: 1976-09-27
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Granted: 1977-12-06
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Expires: 1996-09-27
Abstract
Abstract Foams (as for example polyurethane foam) catamenial tampons which have been treated with surfactant. Catamenial tampons of this invention exhibit improved humid expansion characteristics. In a preferred embodiment, the catamenial tampons comprise particles of lubricated polyurethane foam which have been treated with surfactant and which are contained within a fluid permeable overwrap. The invention includes a process for making the above described catamenial tampons.
Inventors
- 👤 Thomas A. DesMarais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:51
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
25 words
A living body fluid receptor comprising a body contacting means enclosing an absorbent, resilient particulate foam material which has been lubricated and treated with surfactant.
Claim 2
Dependent Claim
25 words
A living body fluid receptor comprising a body contacting means enclosing an absorbent, resilient particulate foam material which has been lubricated and treated with surfactant.
Claim 3
Dependent Claim
25 words
The fluid receptor of claim 1, wherein said surfactant is present at from about 0.1 to about 15 percent by weight of said foam material.
Claim 4
Dependent Claim
25 words
The fluid receptor of claim 1, wherein said surfactant is present at from about 0.1 to about 5 percent by weight of said foam material.
Claim 5
Dependent Claim
12 words
The fluid receptor of claim 1, wherein said foam material is polyurethane.
Claim 6
Dependent Claim
24 words
The fluid receptor of claim 4, wherein said surfactant is present at from about 0.1 to about 15 percent by weight of said polyurethane.
Claim 7
Dependent Claim
24 words
The fluid receptor of claim 4, wherein said surfactant is present at from about 0.1 to about 5 percent by weight of said polyurethane.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |