US4759762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accommodating lens
Assignee: Individual
•
Filing: 1987-06-16
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Granted: 1988-07-26
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Expires: 2007-06-16
Abstract
Abstract An accommodating lens including a lens optic with two indexes of refraction, the indexes of refraction based on dual cylindrical materials of the lens optic or a dual composite material of the lens optic. The dual cylindrical material or dual composite material of the lens optic is of PMMA. The lens can be either a posterior chamber lens or an anterior chamber lens, and include a plurality of outwardly extending loops.
Inventors
- 👤 Dennis T. Grendahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:03
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/1616; A61F2250/00; A61F2250/0014; A61F2250/005; A61F2250/0053
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
An intraocular lens comprising: a. an optic composed of two rigid, transparent elements having different indices of refraction which provide an aperture difference for increasing the depth of field of said optic, one element is the lens itself and the other element is a length of monofilament spirally wound on the surface of the lens to create an aperture; and, b. a plurality of loops extending outwardly from said optic.
Claim 2
Dependent Claim
70 words
An intraocular lens comprising: a. an optic composed of two rigid, transparent elements having different indices of refraction which provide an aperture difference for increasing the depth of field of said optic, one element is the lens itself and the other element is a length of monofilament spirally wound on the surface of the lens to create an aperture; and, b. a plurality of loops extending outwardly from said optic.
Claim 3
Dependent Claim
12 words
The lens of claim 1 in which the elements are concentric cylinders.
Claim 4
Dependent Claim
13 words
The lens of claim 2 in which the elements are of different colors.
Claim 5
Dependent Claim
12 words
A lens according to anyone of the preceding claims composed of PMMA.
References Cited (Backward Citations)
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US3037425A
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US3034403A
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US3339997A
Cited
US3454332A
Cited
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US4605409A
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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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |