US4232003A
Expired / Lapsed
US
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Synthetic physiological mucus
Assignee: Individual
•
Filing: 1975-11-26
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Granted: 1980-11-04
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Expires: 1995-11-26
Abstract
Abstract A synthetic physiological mucus having particular usefulness as a vaginal and surgical lubricant, based upon a pituitous aqueous solution of a high molecular weight polyacrylamide.
Inventors
- 👤 Albert E. Posthuma
- 👤 Robert C. Woodhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:23
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/785; A61K31/765; A61K31/78; Y; Y10; Y10S; Y10S424/00; Y10S424/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
A method of treating vaginal areas deficient in natural mucus, comprising the steps of: supplying a pituitous aqueous solution consisting essentially of about 0.3 to about 1.5 grams of polyacrylamide polymer per 100 cc of water, said polyacrylamide polymer having a molecular weight of at least about 3,000,000 and said solution having a pH in the range of about 3 to 10; and applying said solution to vaginal areas to form a stainless, odorless, nontoxic coating having lubricity, pituitousness and clingyness characteristics resembling those of natural vaginal mucus.
Claim 2
Independent Claim
88 words
A method of treating vaginal areas deficient in natural mucus, comprising the steps of: supplying a pituitous aqueous solution consisting essentially of about 0.3 to about 1.5 grams of polyacrylamide polymer per 100 cc of water, said polyacrylamide polymer having a molecular weight of at least about 3,000,000 and said solution having a pH in the range of about 3 to 10; and applying said solution to vaginal areas to form a stainless, odorless, nontoxic coating having lubricity, pituitousness and clingyness characteristics resembling those of natural vaginal mucus.
Claim 3
Dependent Claim
18 words
The method of claim 1 in which said polyacrylamide polymer contains less than about 0.05% of acrylamide monomer.
Claim 4
Dependent Claim
14 words
The method of claim 2 in which said aqueous solution includes a bacteriostatic agent.
Claim 5
Dependent Claim
20 words
The method of claim 3 in which said solution has a pH in the range from about 5 to 8.
Claim 6
Dependent Claim
16 words
The method of claim 4 in which said aqueous solution has a pH of about 5.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein said polyacrylamide polymer is an anionic polyacrylamide polymer.
Claim 8
Dependent Claim
22 words
The method of claim 6 in which said anionic polyacrylamide polymer has approximately 26-35% of its amide groups substituted by carboxyl groups.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |