US3339318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making ophthalmic lens
Assignee: Zeag AG
•
Filing: 1964-12-07
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Granted: 1967-09-05
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Robert E Graf
- 👤 Robert W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/0012; G; G02; G02C; G02C7/00; G02C7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF MAKING AN OPHTHALMIC LENS UNIT OF THE CHARACTER DESCRIBED, SAID METHOD COMPRISING THE STEPS OF PROVIDING A LENS BLANK HAVING A SIDE WHICH IS DIVIDED INTO A LEAST TWO PORTIONS OF DIFFERENT SURFACE CURVATURE AND HAVING A SHOULDER SURFACE EXTENDING BETWEEN SAID PORTIONS, THE SURFACE CURVATURE OF AT LEAST ONE OF SAID PORTIONS BEING OPTICALLY FINISHED, MASKING SAID OPTICALLY FINISHED SURFACE CURVATURE AT LEAST ADJACENT TO SAID SHOULDER SURFACE, TREATING SAID SHOULDER SURFACE TO ADAPT SAME FOR SUBSTANTIALLY REDUCED LIGHT TRANSMISSION THERETHROUGH AND REMOVING SAID MASK FROM SAID FINISHED SURFACE PORTION.
Claim 2
Independent Claim
94 words
A METHOD OF MAKING AN OPHTHALMIC LENS UNIT OF THE CHARACTER DESCRIBED, SAID METHOD COMPRISING THE STEPS OF PROVIDING A LENS BLANK HAVING A SIDE WHICH IS DIVIDED INTO A LEAST TWO PORTIONS OF DIFFERENT SURFACE CURVATURE AND HAVING A SHOULDER SURFACE EXTENDING BETWEEN SAID PORTIONS, THE SURFACE CURVATURE OF AT LEAST ONE OF SAID PORTIONS BEING OPTICALLY FINISHED, MASKING SAID OPTICALLY FINISHED SURFACE CURVATURE AT LEAST ADJACENT TO SAID SHOULDER SURFACE, TREATING SAID SHOULDER SURFACE TO ADAPT SAME FOR SUBSTANTIALLY REDUCED LIGHT TRANSMISSION THERETHROUGH AND REMOVING SAID MASK FROM SAID FINISHED SURFACE PORTION.
References Cited (Backward Citations)
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Cited
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |