US3882869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-dispersible plastic tampon insertion tubes and the like
Assignee: Kimberly Clark Corp
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Filing: 1972-01-31
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Granted: 1975-05-13
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Expires: 1992-01-31
Abstract
Abstract A water-dispersible insertion device for tampons, suppositories and the like comprising tubes made from thermoplastic water soluble polymer compounded with water-insoluble fillers.
Inventors
- 👤 David E Hanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:54
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/26; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/62; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
AN IMPROVED WATER-DISPERSIBLE INSERTION DEVICE FOR TAMPONS AND THE LIKE COMPRISING AT LEAST ONE THIN-WALLED TUBULAR MEMBER IN WHICH THE WALLS THEREOF ARE COMPRISED OF A THERMOFORMMED, INJECTION-MOLDED WATER-SOLUBLE POLYMER COMPOUNDED WITH WATER-SNSOLUBLE FILLERS, SAID POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDE POLYMERS HAVING A MOLECULAR WEIGHT FROM ABOUT 100,000 TO ABOUT 2 MILLION AND AN HYDROXYPROPYL CELLULOSE POLYMER HAVING A MELECULAR VALUE OF FROM ABOUT 75,000 TO ABOUT 375,000 SAID FILLER BEING PRESENT IN THE AMOUNT OF FROM ABOUT 50 TO ABOUT 75% BY WEIGHT, AND SAID FILLER BEING SELECTED FROM THE GROUP CONSISTING OF TALC, CLAY, AND HYDRATED SILICATES.
Claim 2
Dependent Claim
104 words
AN IMPROVED WATER-DISPERSIBLE INSERTION DEVICE FOR TAMPONS AND THE LIKE COMPRISING AT LEAST ONE THIN-WALLED TUBULAR MEMBER IN WHICH THE WALLS THEREOF ARE COMPRISED OF A THERMOFORMMED, INJECTION-MOLDED WATER-SOLUBLE POLYMER COMPOUNDED WITH WATER-SNSOLUBLE FILLERS, SAID POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE OXIDE POLYMERS HAVING A MOLECULAR WEIGHT FROM ABOUT 100,000 TO ABOUT 2 MILLION AND AN HYDROXYPROPYL CELLULOSE POLYMER HAVING A MELECULAR VALUE OF FROM ABOUT 75,000 TO ABOUT 375,000 SAID FILLER BEING PRESENT IN THE AMOUNT OF FROM ABOUT 50 TO ABOUT 75% BY WEIGHT, AND SAID FILLER BEING SELECTED FROM THE GROUP CONSISTING OF TALC, CLAY, AND HYDRATED SILICATES.
Claim 3
Dependent Claim
27 words
The device of claim 1 in which said compounded polymer also contains a lubricant selected from the group consisting of magnesium stearate, zinc stearate and glycerine monostearate.
Claim 4
Dependent Claim
16 words
The device of claim 1 in which said compounded polymer also contains small particle cellulosic extenders.
Claim 5
Dependent Claim
22 words
The device of claim 1 in which said compounded polymer also contains a compatible plasticizer in the amount up to about 5%.
Claim 6
Dependent Claim
15 words
The device of claim 1 in which said compounded polymer also contains a non-ionic surfactant.
Claim 7
Dependent Claim
40 words
The device of claim 1 in which said compounded polymer also contains a stabilizing phenolic antioxidant, said antioxidant being selected from the group consisting of 2, 6 ditertiarybutyl-p-cresol, and 1, 3, 5 trimethyl-2, 4, 6, tris (3,5-ditertiarybutyl, 4 hydroxy benzyl)benzene.
Claim 8
Dependent Claim
15 words
The device of claim 1 in which said device comprises a pair of telescoping tubes.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |