Patent US4546310A successfully refreshed from Google Patents.
Patent US5070889A successfully refreshed from Google Patents.
US5070889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contraceptive sponge and tampon
Assignee: Individual
•
Filing: 1990-11-15
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Granted: 1991-12-10
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Expires: 2010-11-15
Abstract
Abstract A bacteriocidal virocidal sponge containing iodine and/or chlorhexidine and a surfactant which can be used as a contraceptive and virocidal and bacteriocidal sponge positioned within a human body comprising a polyurethane open cell foam impregnated with a surfactant and iodine and/or chlorhexidine. A bactericidal tampon containing an iodophor or chlorhexidine does not induce toxic shock syndrome.
Inventors
- 👤 Harry H. Leveen
- 👤 Robert F. Leveen
- 👤 Eric G. LeVeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:35
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/48; A01; A01N; A01N25/00; A01N25/16; A01N25/34; A61K; A61K9/00; A61K9/0012; A61K9/0034; A61K9/0036; A61L15/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A bacteriocidal virocidal sponge member for insertion into the vagina in the form of an open cell foam impregnated with an iodine and chlorhexidine polyurethane complex, said sponge member being hat shaped and said open cell foam is treated with iodine to continuously liberate iodine into the human body said foam having in a concentration of iodine ranging from 1 to 5 parts per million.
Claim 2
Dependent Claim
65 words
A bacteriocidal virocidal sponge member for insertion into the vagina in the form of an open cell foam impregnated with an iodine and chlorhexidine polyurethane complex, said sponge member being hat shaped and said open cell foam is treated with iodine to continuously liberate iodine into the human body said foam having in a concentration of iodine ranging from 1 to 5 parts per million.
Claim 3
Dependent Claim
20 words
A sponge member as claimed in claim 1 wherein said sponge comprises a circular rim with a concave interior portion.
Claim 4
Dependent Claim
27 words
A sponge member as claimed in claim 1 wherein said open cell foam is treated with a solution of elemental iodine dissolved in a non ionic surfactant.
Claim 5
Dependent Claim
23 words
A sponge member as claimed in claim 3 wherein said surfactant includes an acid solution for the purpose of keeping vaginal secretions acid.
Claim 6
Dependent Claim
25 words
A sponge member as claimed in claim 4 wherein said acid solution is polyacrylic acid and the amount added ranges from 5 to 20 milligrams.
Claim 7
Dependent Claim
28 words
A sponge member as claimed in claim 1 wherein said open cell foam has small open cells of high density and a chlorhexidine concentration of about 2.5 milligrams.
Claim 8
Dependent Claim
18 words
A sponge member as claimed in claim 1 wherein said open cell foam is of the polyether variety.
Claim 9
Dependent Claim
16 words
A sponge member as claimed in claim 7 wherein said polyether variety is a polyether polyurethane.
Claim 10
Dependent Claim
19 words
A sponge member as claimed in claim 1 wherein said open cell foam is impregnated only with chlorhexidine polyurethane.
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) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |