US4335722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapped superabsorbent core tampon
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1981-02-17
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Granted: 1982-06-22
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Expires: 2001-02-17
Abstract
Abstract A tampon having an absorbent matrix with a superabsorbent material as a core is provided. The superabsorbent material is at least partially surrounded by a water dispersible coating and both the core and coating are surrounded by nonsuperabsorbent absorbents.
Inventors
- 👤 David M. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2051; A61L15/22; A61L15/24; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
38 words
A tampon having an absorbent matrix comprising: (a) a superabsorbent core material; (b) A nontoxic water soluble coating material at least partially covering said superabsorbent core; and (c) an outer absorbent layer surrounding said superabsorbent and said coating.
Claim 2
Dependent Claim
38 words
A tampon having an absorbent matrix comprising: (a) a superabsorbent core material; (b) A nontoxic water soluble coating material at least partially covering said superabsorbent core; and (c) an outer absorbent layer surrounding said superabsorbent and said coating.
Claim 3
Dependent Claim
15 words
The tampon according to claim 1 wherein the coating material is a film forming polymer.
Claim 4
Dependent Claim
13 words
The tampon according to claim 2 wherein the coating material is polyvinyl alcohol.
Claim 5
Dependent Claim
21 words
The tampon according to claim 1 wherein the superabsorbent is between about 10 and 50% by weight of the absorbent matrix.
Claim 6
Dependent Claim
20 words
The tampon according to claim 1 wherein the coating increases the viscosity of the aqueous media as it dissolves therein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |