Patent US3169695A successfully refreshed from Google Patents.
Patent US4799931A successfully refreshed from Google Patents.
US4799931A
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US
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Intracorneal lens
Assignee: Individual
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Filing: 1986-05-14
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Granted: 1989-01-24
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Expires: 2006-05-14
Abstract
Abstract An intracorneal lens with at least one hole such as central pinhole, or a, plurality of pinholes or the like; and, a material filling the holes or a material filling the pinholes, and coating the lens. The intracorneal lens can be of any high index of refraction material. The material filling the holes as well as coating the lens can be a gas permeable polymer or metabolite permeable material, a biocompatible polymer or biocompatible material, or a neutral or negatively charged material.
Inventors
- 👤 Richard L. Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/145; A61F2/0077; A61F2/1451; A61F2/15; A61F2/16; A61F2/1613; A61F2/1648; A61L; A61L27/00; A61L27/14; A61L27/18; A61L27/28; A61L27/34; G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/041; A61F2002/16965; A61F2002/1699; A61L2430/00; A61L2430/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
Intracorneal lens comprising: a. intracorneal lens optic of a high index of refraction polymer material selected from the group consisting of polysulfone, polyether ketone, or polycarbonate, the optic including a plurality of holes of a diameter in the range of 0.00001 mm to 1 mm; and, b. a gas permeable biocompatible material coating on at least a portion of said lens and filling said holes, said coating and said filling material being selected from the group consisting of silicon, hydrogel or cellulose acetate butyrate.
Claim 2
Dependent Claim
84 words
Intracorneal lens comprising: a. intracorneal lens optic of a high index of refraction polymer material selected from the group consisting of polysulfone, polyether ketone, or polycarbonate, the optic including a plurality of holes of a diameter in the range of 0.00001 mm to 1 mm; and, b. a gas permeable biocompatible material coating on at least a portion of said lens and filling said holes, said coating and said filling material being selected from the group consisting of silicon, hydrogel or cellulose acetate butyrate.
Claim 3
Dependent Claim
22 words
Intracorneal lens of claim 1 wherein said coating is on both sides of said lens and in said holes of said lens.
Claim 4
Dependent Claim
20 words
Intracorneal lens of claim 1 wherein said material in said holes and said material coating said lens are different materials.
References Cited (Backward Citations)
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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) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |