Patent US3993074A successfully refreshed from Google Patents.
US3993074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic sanitary device
Assignee: Individual
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Filing: 1975-05-07
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Granted: 1976-11-23
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Expires: 1995-05-07
Abstract
Abstract A monolithic sanitary device comprising a generally arcuate, boat-shaped structure prepared from a hydrophilic, highly absorbent, polymeric foam material which has been rendered fluid-impervious on one side thereof by a coating of an organic polymeric latex material. The device dispenses with the need of elaborate barrier layers, the various facing and backing sheets, as the foam material possess a texture which is acceptable to living tissue and the fluid-impervious latex coating prevents undesirable strike-through and assists in maintaining the structural integrity of the device.
Inventors
- 👤 Jerome L. Murray
- 👤 Frances R. Gardiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:14
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/472; A61F13/47236; A61F13/47245; A61F13/47254; A61F13/47272; A61F13/56; A61F13/64
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
28 words
A monolithic sanitary device comprising an arcuate, boat-shaped structure prepared from a hydrophilic, absorbent polymeric foam material coated on one side thereof with a fluid-impervious organic polymeric latex.
Claim 2
Dependent Claim
28 words
A monolithic sanitary device comprising an arcuate, boat-shaped structure prepared from a hydrophilic, absorbent polymeric foam material coated on one side thereof with a fluid-impervious organic polymeric latex.
Claim 3
Dependent Claim
12 words
The device of claim 1 wherein said hydrophilic foam comprises a polyurethane.
Claim 4
Dependent Claim
29 words
The device of claim 1 wherein said latex is prepared from a material selected from the group consisting of polyolefins, polyacrylates, ethylene-vinyl acetate copolymers, ABS resins, and silicone resins.
Claim 5
Dependent Claim
12 words
The device of claim 3 wherein said latex comprises a silicone resin.
Claim 6
Dependent Claim
17 words
The device of claim 1 further including means attached thereto for supporting said device on a body.
Claim 7
Dependent Claim
26 words
The device of claim 5 wherein said body support means comprises a pair of elastic strings, each attached to said device at opposite longitudinal ends thereof.
Claim 8
Dependent Claim
79 words
The device of claim 6 wherein one of said strings defines a first loop, and the other of said strings is joined at one point a short distance beyond said respective longitudinal end with two strands emerging from said juncture, wherein one of said strands terminates in a second loop, and the other of said strands terminates in a hook, whereby said strand bearing said hook is adapted to pass through said second loop, and engage said first loop.
Claim 9
Dependent Claim
10 words
The device of claim 7 which comprises a sanitary napkin.
Claim 10
Dependent Claim
25 words
The device of claim 1 further containing an additive selected from the group consisting of deodorants, disinfectants, perfumes, emollients, medicaments, pigments, dyes and mixtures thereof.
Claim 11
Dependent Claim
34 words
The device of claim 1 wherein said boat-shaped structure comprises an upper surface possessing a lesser curvature and a lower surface possessing a greater curvature, and said latex is coated upon said lower surface.
Claim 12
Independent Claim
46 words
A method for the preparation of a monolithic sanitary device which comprises: A. providing an absorbent, hydrophilic organic polymeric foam material; B. forming said foam material into an arcuate, boat-shaped structure; and C. coating said structure on one side thereof with a fluid-impervious organic polymeric latex.
Claim 13
Independent Claim
46 words
A method for the preparation of a monolithic sanitary device which comprises: A. providing an absorbent, hydrophilic organic polymeric foam material; B. forming said foam material into an arcuate, boat-shaped structure; and C. coating said structure on one side thereof with a fluid-impervious organic polymeric latex.
Claim 14
Dependent Claim
12 words
The method of claim 11 wherein said polymeric foam comprises a polyurethane.
Claim 15
Dependent Claim
16 words
The method of claim 11 wherein said foam is formed into said structure by injection molding.
Claim 16
Dependent Claim
12 words
The method of claim 13 wherein said latex comprises a silicone resin.
Claim 17
Dependent Claim
29 words
The method of claim 11 wherein said latex is prepared from a material selected from the group consisting of polyolefins, polyacrylates, ethylene-vinyl acetate copolymers, ABS resins, and silicone resins.
Claim 18
Dependent Claim
15 words
The method of claim 11 wherein said structure is coated by spraying with said resin.
Claim 19
Dependent Claim
18 words
The method of claim 11 wherein said structure is coated by dipping in a bath of said resin.
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) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |