US3695921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating a catheter
Assignee: National Patent Development Corp
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Filing: 1970-09-09
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Granted: 1972-10-03
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Expires: 1990-09-09
Abstract
Abstract CATHETERS ARE PROVIDED WITH COATING OF A HYDROPHILIC ACRYLATE OR METHACRYLATE POLYMER. THE COATING REDUCES THE IRRITATION AND INFECTION NORMALLY ACCOMPANYING THE USE OF CATHETERS. INFECTION CAN BE REDUCED STILL FURTHER BY ABSORBING AN ANTIBIOTIC IN THE COATING.
Inventors
- 👤 Thomas H Shepherd
- 👤 Francis E Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:21
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0017; A61L; A61L29/00; A61L29/04; A61L29/041; A61L29/14; A61L29/16; A61L2300/00; A61L2300/20; A61L2300/252; A61L2300/254; A61L2300/40; A61L2300/404; A61L2300/406; A61L2300/60; A61L2300/606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |