US3563244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condoms
Assignee: HAJIME MORIBE
•
Filing: 1968-03-15
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Granted: 1971-02-16
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Expires: 1988-03-15
Abstract
Abstract A condom, the film of which consists of a bland of a synthetic resinous substance such as saponified polyvinyl alcohol and a rubber latex, said condom being capable of keeping its physical configuration when brought into contact with warm aqueous liquid having a temperature substantially same as that of a human body, yet capable of being decomposed when kept into contact with cold water and after lapse of a certain time period.
Inventors
- 👤 Kunitami Asaka
- 👤 Masao Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:23
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; A; A61; A61F; A61F6/00; A61F6/02; A61F6/04; C08L21/00; C08L21/02; C08L29/10; C08L29/14; C08L7/00; C08L7/02; C08L9/00; Y; Y10; Y10S; Y10S220/00; Y10S220/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
A condom as set forth in claim 1, wherein the blending ratio for said synthetic resinous substance with said rubber is from 8: 2 to 5:5.
Claim 2
Dependent Claim
33 words
A condom as set forth in claim 1, wherein the saponification value and polymerization degree of said polyvinyl alcohol or said saponified copolymer of vinyl ester are 60-80 mol. percent and 500-2,000 respectively.
Claim 3
Dependent Claim
15 words
A condom as set forth in claim 1, wherein said vinyl ester is vinyl acetate.
Claim 4
Dependent Claim
44 words
A condom as set forth in claim 1, wherein said acid or monomer copolymerizable with said saponified copolymer of vinyl ester is a member selected from the group consisting of acrylic acid, acrylic amide, vinyl chloride, crotonic acid, maleic acid, and anhydrous maleic acid.
Claim 5
Dependent Claim
18 words
A condom as set forth in claim 1, wherein said polyvinyl alcohol resin is partially acetalized or urethanized.
Claim 6
Dependent Claim
32 words
A condom as set forth in claim 6, wherein said partially acetalized polyvinyl alcohol is a member selected from the group consisting of formalized-, acetoacetalized-, propionalized-, butyralized-, methoxybutyralized-, ethoxybutyralized-, and benzalized-polyvinyl alcohol.
Claim 7
Dependent Claim
20 words
A condom as set forth in claim 1, wherein said resinous polyvinyl alkylether is polyvinyl methylether or a copolymer thereof.
Claim 8
Dependent Claim
30 words
A condom as set forth in claim 1, wherein said cellulose derivative is a member selected from the group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose and carboxyethyl cellulose.
Claim 9
Dependent Claim
31 words
A condom as set forth in claim 1, wherein said rubber substance is a member selected from the group comprising styrene-butadiene rubber, acryronitrile-butadiene rubber, butadiene rubber, chloroprene rubber and acrylate-butadiene rubber.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |