Patent US3674030A successfully refreshed from Google Patents.
US3674030A
Expired / Lapsed
US
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Catamenial tampons or the like
Assignee: Sponcel Ltd
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Filing: 1970-12-11
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Granted: 1972-07-04
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Expires: 1990-12-11
Abstract
Abstract A catamenial tampon comprising an elongated strip of regenerated cellulose sponge material bonded to an outer covering of reinforcing material and compressed and dried to a reduced diameter, said covering being adapted to permit expansion of said sponge material when moistened.
Inventors
- 👤 David Thomas Jones
- 👤 George Edward Jowett
- 👤 Edward Ernest Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:06
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/2051; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A catamenial tampon having an absorbent body of generally elongated form constituted by a portion severed from an extruded string of regenerated cellulose sponge material; said body having bonded to the surface thereof a permeable outer covering of reinforcing material and having been compressed and dried so that its transverse cross-section has dimensions which are smaller than, and in relative ratio different from the corresponding dimensions when the sponge material is moistened, and the outer covering permitting expansion of the sponge material when moistened, in which the tampon is elliptical in cross-section when both wet and dry, but the material occupying its major axis when dry occupies its minor axis when wet.
Claim 2
Dependent Claim
112 words
A catamenial tampon having an absorbent body of generally elongated form constituted by a portion severed from an extruded string of regenerated cellulose sponge material; said body having bonded to the surface thereof a permeable outer covering of reinforcing material and having been compressed and dried so that its transverse cross-section has dimensions which are smaller than, and in relative ratio different from the corresponding dimensions when the sponge material is moistened, and the outer covering permitting expansion of the sponge material when moistened, in which the tampon is elliptical in cross-section when both wet and dry, but the material occupying its major axis when dry occupies its minor axis when wet.
Claim 3
Dependent Claim
26 words
A catamenial tampon as claimed in claim 1 in which said outer covering is seamless and covers only the longitudinally extending surface of said absorbent body.
Claim 4
Dependent Claim
85 words
A catamenial tampon having a compressed absorbent body of cylindrical form, constituted by a length of extruded regenerated cellulose sponge material of the requisite transverse cross-section, with its lateral surface only covered by a reinforcement consisting of a seamless layer of permeable material bonded to the sponge material, in which the tampon in its compressed state is of non-circular transverse cross-section, and when moistened assumes a second, expanded non-circular transverse cross-section such that the major dimensions of the two transverse cross-sections are at right angles.
Claim 5
Dependent Claim
85 words
A catamenial tampon having a compressed absorbent body of cylindrical form, constituted by a length of extruded regenerated cellulose sponge material of the requisite transverse cross-section, with its lateral surface only covered by a reinforcement consisting of a seamless layer of permeable material bonded to the sponge material, in which the tampon in its compressed state is of non-circular transverse cross-section, and when moistened assumes a second, expanded non-circular transverse cross-section such that the major dimensions of the two transverse cross-sections are at right angles.
Claim 6
Dependent Claim
16 words
A tampon as claimed in claim 3 in which the permeable material comprises a fabric tube.
Claim 7
Dependent Claim
87 words
A catamenial tampon having a compressed absorbent body of cylindrical form, constituted by a length of extruded regenerated cellulose sponge material of the requisite transverse cross-section, with part of its lateral surface only covered by a reinforcement consisting of a seamless layer of permeable material bonded to the sponge material, in which the tampon in its compressed state is of non-circular transverse cross-section, and when moistened assumes a second, expanded non-circular transverse cross-section such that the major dimensions of the two transverse cross-sections are at right angles.
Claim 8
Dependent Claim
87 words
A catamenial tampon having a compressed absorbent body of cylindrical form, constituted by a length of extruded regenerated cellulose sponge material of the requisite transverse cross-section, with part of its lateral surface only covered by a reinforcement consisting of a seamless layer of permeable material bonded to the sponge material, in which the tampon in its compressed state is of non-circular transverse cross-section, and when moistened assumes a second, expanded non-circular transverse cross-section such that the major dimensions of the two transverse cross-sections are at right angles.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |