Patent US3595236A successfully refreshed from Google Patents.
US3595236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating to aid tampon insertion and tampons coated therewith
Assignee: Kimberly Clark Corp
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Filing: 1969-03-17
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Granted: 1971-07-27
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Expires: 1989-03-17
Abstract
Abstract An improved coating material for application to the forward portion of absorbent tampons as an insertion aid. The coating comprises a physical mixture of polyethylene glycol and starch. The coating can be applied to the tampon without penetrating to the interior of the absorbent body and remains stable under a wide range of handling conditions. Coated tampons are also described.
Inventors
- 👤 Virginia A Corrigan
- 👤 Bruce A Townsend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2082; A61F13/2085; A61F13/2051; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
The tampon of claim 1 in which the polyethylene glycol with a molecular weight of 4,000 is present in the amount of from 40 to 70 parts by weight, the polyethylene glycol with the molecular weight of 400 is present in the amount of from 15 to 30 parts by weight, and the starch is present in the amount of 15 to 30 parts by weight.
Claim 2
Dependent Claim
66 words
The tampon of claim 1 in which the polyethylene glycol with a molecular weight of 4,000 is present in the amount of from 50 to 60 parts by weight, the polyethylene glycol with the molecular weight of 400 is present in the amount of from 20 to 25 parts by weight, and the starch is present in the amount of 20 to 25 parts by weight.
Claim 3
Dependent Claim
25 words
The tampon of claim 2 in which the polyethylene glycol with the molecular weight of 400 and the starch are present in substantially equal amounts.
Claim 4
Dependent Claim
25 words
The tampon of claim 3 in which the polyethylene glycol with the molecular weight of 400 and the starch are present in substantially equal amounts.
Claim 5
Dependent Claim
13 words
The tampon of claim 1 in which said starch is powdered corn starch.
Claim 6
Dependent Claim
22 words
The tampon of claim 1 in which said coating also contains a chemical preservative in an amount of less than 1 percent.
Claim 7
Dependent Claim
12 words
The tampon of claim 7 in which said preservative is calcium propionate.
Claim 8
Dependent Claim
17 words
The tampon of claim 1 in which said coating covers the entire frontal portion of said tampon.
Claim 9
Dependent Claim
33 words
The tampon of claim 1 in which the sides and shoulders of the frontal portion of said tampon are coated while a central area in advance of the shoulders is free of coating.
References Cited (Backward Citations)
US2440141A
Cited
US2301868A
Cited
US2491017A
Cited
US2849000A
Cited
US3406688A
Cited
US3428044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |