Patent US3933411A successfully refreshed from Google Patents.
US3933411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophilic contact lens with embedded stabilizing means
Assignee: Individual
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Filing: 1971-07-23
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Granted: 1976-01-20
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Expires: 1991-07-23
Abstract
Abstract A contact lens wherein the body of the lens is made of soft plastic with a stabilized optical area in the lens, stabilization of the optical area being realized with the addition of stabilizing means at or slightly radially outwardly disposed with respect to the approximate maximum pupil opening of the eye.
Inventors
- 👤 Albert E. Winner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:08
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/048
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
An improved contact lens made of hydrophilic plastic material which is adapted generally to orient itself in a manner corresponding with the eye contour and surface on which it rests, the improvement comprising: a contact lens body having a central optical area corresponding generally to the maximum pupil opening of the eye and an outer peripheral area in surrounding relationship with said optical area; means embedded wholly within said lens body and positioned radially beyond said central optical area for stabilizing the anterior portion of said central optical area against re-orientation in a manner corresponding to the eye contour, whereby the optical characteristics originally provided in said optical area is retained during re-orientation of the lens body; and an inwardly beveled surface on the posterior outermost radial edge of said peripheral area.
Claim 2
Dependent Claim
132 words
An improved contact lens made of hydrophilic plastic material which is adapted generally to orient itself in a manner corresponding with the eye contour and surface on which it rests, the improvement comprising: a contact lens body having a central optical area corresponding generally to the maximum pupil opening of the eye and an outer peripheral area in surrounding relationship with said optical area; means embedded wholly within said lens body and positioned radially beyond said central optical area for stabilizing the anterior portion of said central optical area against re-orientation in a manner corresponding to the eye contour, whereby the optical characteristics originally provided in said optical area is retained during re-orientation of the lens body; and an inwardly beveled surface on the posterior outermost radial edge of said peripheral area.
Claim 3
Dependent Claim
21 words
The lens of claim 1 wherein the stabilizing means is disposed radially outwardly of the maximum pupil opening of the user.
Claim 4
Dependent Claim
16 words
The lens of claim 1 wherein the stabilizing means is a rigid 5 gauge wire ring.
Claim 5
Dependent Claim
14 words
The lens of claim 1 wherein the stabilizing means is a rigid transparent ring.
References Cited (Backward Citations)
US2664025A
Cited
US3503942A
Cited
US3497577A
Cited
US3468602A
Cited
FR1563496A
Cited
US3698802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |