Patent US4859049A successfully refreshed from Google Patents.
US4859049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens for oriented optical corrections
Assignee: Individual
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Filing: 1987-08-28
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Granted: 1989-08-22
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Expires: 2007-08-28
Abstract
Abstract The contact lens comprises a central optical zone and a peripheral zone for fastening the lens. For centering said lens the peripheral zone comprises two stabilizing bosses which are disposed on the horizontal stabilization axis of the lens. For large palpebral openings it may be preferable to use two pairs of bosses, whereby each pair comprises two bosses, disposed symmetrically to said axis of stabilization. For multifocal corrections it is possible to use a third boss, disposed on the vertical axis of the lens. These stabilizers allow a perfect centering of the lens, hindering its rotation and the use of very thin lenses.
Inventors
- 👤 Gerard Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:34
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/041; G02C7/048
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
A contact lens for oriented optical correction having a horizontal axis of stabilization, a central optical zone and a peripheral zone, wherein said lens comprises in its peripheral zone means adapted for cooperative engagement with at least one eyelid of a wearer for orientation of said lens about said horizontal axis of stabilization, said means including at least two stabilizing bosses protruding from said lens surface, said bosses being disposed on or symmetrically to said horizontal axis of stabilization.
Claim 2
Dependent Claim
79 words
A contact lens for oriented optical correction having a horizontal axis of stabilization, a central optical zone and a peripheral zone, wherein said lens comprises in its peripheral zone means adapted for cooperative engagement with at least one eyelid of a wearer for orientation of said lens about said horizontal axis of stabilization, said means including at least two stabilizing bosses protruding from said lens surface, said bosses being disposed on or symmetrically to said horizontal axis of stabilization.
Claim 3
Dependent Claim
21 words
The lens of claim 1, wherein the bosses are disposed so as to be centered with reference to said optical zone.
Claim 4
Dependent Claim
25 words
The lens of claim 1, comprising two pairs of bosses, the two bosses of one pair being disposed symmetrically to said horizontal axis of stabilization.
Claim 5
Dependent Claim
22 words
The lens of claim 1, comprising further at least one boss placed on or symmetrically to the vertical axis of said lens.
Claim 6
Dependent Claim
23 words
The lens of claim 1, wherein the height of said bosses comprises between 0.1 and 0.4 mm, preferably between 0.15 and 0.3 mm.
Claim 7
Dependent Claim
12 words
The lens of claim 1, wherein each of said bosses is dome-shaped.
Claim 8
Dependent Claim
56 words
A spherically asymmetric contact lens having a generally arcuate and circular primary surface with a pair of diametrically opposed protrusion means for orienting said primary surface; wherein said protrusion means are integrally formed with said primary surface and comprise mounded surface elements adapted to rotate said primary surface in response to temporary contact with an eyelid.
Claim 9
Dependent Claim
56 words
A spherically asymmetric contact lens having a generally arcuate and circular primary surface with a pair of diametrically opposed protrusion means for orienting said primary surface; wherein said protrusion means are integrally formed with said primary surface and comprise mounded surface elements adapted to rotate said primary surface in response to temporary contact with an eyelid.
Claim 10
Dependent Claim
14 words
The lens of claim 7, wherein each of said mounded surface elements is rounded.
Claim 11
Dependent Claim
14 words
The lens of claim 7, wherein each of said mounded surface elements is dome-shaped.
Claim 12
Dependent Claim
23 words
The lens of claim 7, wherein each of said mounded surface elements is a region in space bounded by a simple closed curve.
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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |