US3724462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersible insertion devices for tampons and the like
Assignee: Kimberly Clark Corp
•
Filing: 1971-11-01
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Granted: 1973-04-03
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Expires: 1991-11-01
Abstract
Abstract Improved water-dispersible insertion devices for tampons, suppositories and the like of the type which comprises a pair of telescoping plastic tubes made from plastic sufficiently sensitive to water to be softened in the presence thereof. One of the tubes is made from a type of water-sensitive plastic material which is different from the material used for the other tube. In addition, the plastic material of one tube is incompatible with the plastic material of the other tube.
Inventors
- 👤 D Hanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
16 words
The insertion device of claim 1 wherein each of said plastics are compounded with water-insoluble filler.
Claim 2
Dependent Claim
23 words
The insertion device of claim 1 wherein at least one of said plastics comprises a thermoplastic water-soluble plastic compounded with a water-insoluble filler.
Claim 3
Dependent Claim
28 words
The insertion device of claim 1 wherein one of the tubes is comprised of an hydroxypropyl cellulose polymer and the other tube is comprised of polyethylene oxide polymer.
Claim 4
Dependent Claim
27 words
The insertion device of claim 1 wherein one of the tubes is comprised of an hydroxypropyl cellulose polymer and the other tube is comprised of polyvinyl alcohol.
Claim 5
Dependent Claim
28 words
The insertion device of claim 1 wherein one of the tubes is comprised of a polymer of polyethylene oxide and the other tube is comprised of polyvinyl alcohol.
Claim 6
Dependent Claim
28 words
The insertion device of claim 1 wherein one of the tubes is comprised of a polymer of hydroxypropylmethyl cellulose and the other tube is comprised of polyvinyl alcohol.
Claim 7
Dependent Claim
30 words
The insertion device of claim 1 wherein one of the tubes is comprised of a polymer of hydroxypropylmethyl cellulose and the other tube is comprised of a polyethylene oxide polymer.
References Cited (Backward Citations)
US2509241A
Cited
US3015332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |