Patent US3138157A successfully refreshed from Google Patents.
Patent US3710796A successfully refreshed from Google Patents.
US3710796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corneal drug delivery method
Assignee: Individual
•
Filing: 1971-05-14
•
Granted: 1973-01-16
•
Expires: 1991-05-14
Abstract
Abstract An ophthalmic corneal drug delivery method using a flexable hydrophilic dressing to supply beneficial medications to the corneal area.
Inventors
- 👤 C Neefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:36
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/0008; A61F9/0017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A method of applying medication to the human eye comprising: dispersing an eye medication material in the structure of a contact lens formed from a soft, permeable plastic material; and positioning the contact lens in the eye of a patient and thereby facilitating vision through the contact lens and simultaneously gradually releasing the eye medication from the contact lens into the eye.
Claim 2
Independent Claim
68 words
A method of applying medication to the human eye comprising: impregnating a member formed from a soft, liquid permeable plastic material and having a convex posterior surface with an eye medication; positioning the impregnated member in the eye of a patient with the posterior surface of the member substantially engaging the cornea of the eye and thereby gradually releasing the eye medication from the member into the eye.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |