Patent US4157864A successfully refreshed from Google Patents.
US4157864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens eyeball centering support of soft material for use in conjunction with hard contact lens
Assignee: Individual
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Filing: 1977-02-28
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Granted: 1979-06-12
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Expires: 1997-02-28
Abstract
Abstract A contact lens eyeball centering support of soft material for use in conjunction with hard corneal contact lenses. The support has the form and the material of a soft contact lens and is characterized by the fact that the central optical part is absent, to create a free opening without usual system. A hard corneal contact lens can, when the support is in position on the eye, be positioned into the free central opening without adhesion. The preferred embodiment of the lens eyeball centering support of soft material has an external diameter of approximately 15 mm and an internal diameter that corresponds approximately to the diameter of a standard commercial corneal hard contact lens.
Inventors
- 👤 Bruno Koller
- 👤 Friedrich Kilb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:24
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/048; G02C7/049
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
An aid for wearing a hard corneal contact lens comprising a centering support to be worn on a human eye and having a shape conforming to the curvature thereof, said support formed from a soft contact lens material, said support further having means forming a central opening in the support with a diameter which corresponds substantially to the diameter of a hard contact lens, whereby a hard contact lens can be independently inserted into the opening to adhere to an eye without being affixed to the support.
Claim 2
Dependent Claim
87 words
An aid for wearing a hard corneal contact lens comprising a centering support to be worn on a human eye and having a shape conforming to the curvature thereof, said support formed from a soft contact lens material, said support further having means forming a central opening in the support with a diameter which corresponds substantially to the diameter of a hard contact lens, whereby a hard contact lens can be independently inserted into the opening to adhere to an eye without being affixed to the support.
Claim 3
Dependent Claim
19 words
An aid according to claim 1, characterized by the outside diameter of the centering support being approximately 15 mm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |