US3270099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A method for making multi-focal length contact lenses
Assignee: Individual
•
Filing: 1964-12-07
•
Granted: 1966-08-30
•
Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Richard N Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF PRODUCING A MULTIFOCAL LENS COMPRISING THE STEPS OF, PROVIDING A CURVED OPTICAL SURFACE ON A CURVED BLOCK OF POLYMERIZED ARTIFICIAL RESINOUS MATERIAL HAVING A SELECTED INDEX OF REFRACTION, MOLDING A POLYMERIZABLE MASS OF ARTIFICIAL RESINOUS MATERIAL WHICH WHEN CURED HAS A SELECTED DIFFERENT INDEX OF REFRACTION FROM SAID CURVED BLOCK BY POLYMERIZATION INTO THE CURVED OPTICAL SURFACE OF SAID CURED BLOCK TO FORM AN INTEGRAL BOND BETWEEN THE RESINOUS MATERIALS OF THE FORMABLE MASS AND THE CURED BLOCK AT THE CURVED OPTICAL SURFACE, CURING THE FORMABLE MASS OF RESINOUS MATERIAL TO FORM A MONOLITHIC MASS, FORMING FROM A PORTION OF SAID MONOLITHIC MASS A LENS HAVING ANTERIOR AND POSTERIOR OPTICAL SURFACES OF THE DESIRED LENS OPTICAL CHARACTERISTICS HAVING THE SAME GENERAL CURVATURE AS SAID CURED OPTICAL SURFACE WITH THE CURVED OPTICAL SURFACE INTERSECTING AT LEAST ONE OF THE ANTERIOR AND POSTERIOR SURFACES, THE PORTION OF THE LENS CONTAINING SAID THREE SURFACES PROVIDING A DIFFERENT FOCAL LENGTH THAN THE REMAINDER OF THE LENS.
Claim 2
Independent Claim
165 words
THE METHOD OF PRODUCING A MULTIFOCAL LENS COMPRISING THE STEPS OF, PROVIDING A CURVED OPTICAL SURFACE ON A CURVED BLOCK OF POLYMERIZED ARTIFICIAL RESINOUS MATERIAL HAVING A SELECTED INDEX OF REFRACTION, MOLDING A POLYMERIZABLE MASS OF ARTIFICIAL RESINOUS MATERIAL WHICH WHEN CURED HAS A SELECTED DIFFERENT INDEX OF REFRACTION FROM SAID CURVED BLOCK BY POLYMERIZATION INTO THE CURVED OPTICAL SURFACE OF SAID CURED BLOCK TO FORM AN INTEGRAL BOND BETWEEN THE RESINOUS MATERIALS OF THE FORMABLE MASS AND THE CURED BLOCK AT THE CURVED OPTICAL SURFACE, CURING THE FORMABLE MASS OF RESINOUS MATERIAL TO FORM A MONOLITHIC MASS, FORMING FROM A PORTION OF SAID MONOLITHIC MASS A LENS HAVING ANTERIOR AND POSTERIOR OPTICAL SURFACES OF THE DESIRED LENS OPTICAL CHARACTERISTICS HAVING THE SAME GENERAL CURVATURE AS SAID CURED OPTICAL SURFACE WITH THE CURVED OPTICAL SURFACE INTERSECTING AT LEAST ONE OF THE ANTERIOR AND POSTERIOR SURFACES, THE PORTION OF THE LENS CONTAINING SAID THREE SURFACES PROVIDING A DIFFERENT FOCAL LENGTH THAN THE REMAINDER OF THE LENS.
References Cited (Backward Citations)
US3037425A
Cited
US3034403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |