US4821741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrier contraceptive
Assignee: Individual
•
Filing: 1987-10-05
•
Granted: 1989-04-18
•
Expires: 2007-10-05
Abstract
Abstract A barrier type contraceptive is an umbrella-like device including a flexible, barrier member with a plurality of radially disposed resilient stiffening members associated therewith. The stiffening members bias the barrier member into a generally planar configuration while allowing for the device to be folded into a generally fusiform shape for insertion.
Inventors
- 👤 Reza S. Mohajer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:06
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
An intravaginal barrier type contraceptive device comprising two flexible, continuous, impermeable, generally conical barrier members each having a circular perimeter and an apex, said members joined at a plurality of points along said circular perimeters, with the apices oriented in opposite directions; each barrier member including a plurality of radially disposed, resilient stiffener members associated therewith, said stiffening members adapted to bias the barrier members into a generally conical configuration to uniformly contact the vaginal wall and form a tight barrier seal therewith, and having sufficient flexibility to allow said device to be folded into a generally fusiform shape for insertion and removal.
Claim 2
Dependent Claim
103 words
An intravaginal barrier type contraceptive device comprising two flexible, continuous, impermeable, generally conical barrier members each having a circular perimeter and an apex, said members joined at a plurality of points along said circular perimeters, with the apices oriented in opposite directions; each barrier member including a plurality of radially disposed, resilient stiffener members associated therewith, said stiffening members adapted to bias the barrier members into a generally conical configuration to uniformly contact the vaginal wall and form a tight barrier seal therewith, and having sufficient flexibility to allow said device to be folded into a generally fusiform shape for insertion and removal.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |