Patent US4508531A successfully refreshed from Google Patents.
US4508531A
Expired / Lapsed
US
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Convolutely wound paper tampon tube
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1982-12-06
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Granted: 1985-04-02
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Expires: 2002-12-06
Abstract
Abstract A flexible convolutely wound paper tampon tube is provided in which a thermoplastic coating on either the interior or the exterior portion of the tube is present in an amount to maintain the tube configuration.
Inventors
- 👤 Howard A. Whitehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:44
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/26; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
Convolutely wound flexible paper tampon tube designed to surround a tampon pledget with said tube having a hemispherical edge with a thermosensitive coating, a gripping end and insertion end; said insertion end comprising a plurality of nonoverlapping, multi-layered aligned arcuate lobes, each of said lobes scored near its base to increase flexibility, said lobes collectively deformable to form a hemispherical profile and cover said hemispherical leading edge of said tampon.
Claim 2
Dependent Claim
70 words
Convolutely wound flexible paper tampon tube designed to surround a tampon pledget with said tube having a hemispherical edge with a thermosensitive coating, a gripping end and insertion end; said insertion end comprising a plurality of nonoverlapping, multi-layered aligned arcuate lobes, each of said lobes scored near its base to increase flexibility, said lobes collectively deformable to form a hemispherical profile and cover said hemispherical leading edge of said tampon.
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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |