US4576156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prophylactic device and method
Assignee: Ortho Pharmaceutical Corp
•
Filing: 1978-04-17
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Granted: 1986-03-18
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Expires: 1998-04-17
Abstract
Abstract A prophylactic or contraceptive device made from a thermoplastic polyurethane material having a generally cylindrical configuration with a closed end.
Inventors
- 👤 Manfred F. Dyck
- 👤 Walter A. Haine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/02; A61F6/04; A61B; A61B42/00; B; B29; B29C; B29C51/00; B29C51/08; B29L; B29L2031/00; B29L2031/753; B29L2031/7538
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
The method of preparing a prophylactic device comprising a thin body of substantially homogeneous elastomeric theremoplastic polyurethane material having a substantially cylindrical principal portion which is closed at one end, said cylindrical portion providing a wall of substantially uniform thickness, which method comprises deforming a sheet of a thermoplastic polyurethane elastomer with a preformed mandril at an elevated temperature, whereby said polyurethane elastomer assumes the shape of said mandril forming a polyurethane prophylactic device having a substantially cylindrical principal portion and a wall of substantially uniform thickness.
Claim 2
Independent Claim
87 words
The method of preparing a prophylactic device comprising a thin body of substantially homogeneous elastomeric theremoplastic polyurethane material having a substantially cylindrical principal portion which is closed at one end, said cylindrical portion providing a wall of substantially uniform thickness, which method comprises deforming a sheet of a thermoplastic polyurethane elastomer with a preformed mandril at an elevated temperature, whereby said polyurethane elastomer assumes the shape of said mandril forming a polyurethane prophylactic device having a substantially cylindrical principal portion and a wall of substantially uniform thickness.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein a vacuum is applied to the system during the deformational step.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein the deformational step is carried out at a temperature between 400°-500° F.
Claim 5
Dependent Claim
18 words
The method of claim 2 wherein the applied vacuum is between about 1 and 12 inches of mercury.
Claim 6
Dependent Claim
17 words
The method of claim 1 wherein the thermoplastic polyurethane is a polyether or polyester based urethane elastomer.
Claim 7
Dependent Claim
16 words
The method of claim 1 wherein the prophylactic device is in the shape of a condom.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein the prophylactic device is in the shape of a finger cot.
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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) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |