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US4946269A
Expired / Lapsed
US
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Colored contact lens
Assignee: Med Optics Corp
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Filing: 1988-06-13
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Granted: 1990-08-07
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Expires: 2008-06-13
Abstract
Abstract An opaque contact lens comprises a lens body constructed of polymer and solid latex polymer particles directly bound to at least a portion of a surface of the lens, and is produced by reacting the polymer lens body with a latex emulsion at a temperature of from 35 DEG C to 150 DEG C for from 30 to 90 minutes. The latex emulsion may be applied to the lens body by a transfer printing method in combination with a colouring ink to produce an opaque coloured lens.
Inventors
- 👤 Shlomo Magdassi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:30
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00865; B29D11/00894; B29D11/00903; G; G02; G02C; G02C7/00; G02C7/02; G02C7/021; G02C7/04; G02C7/10; G02C7/108
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
28 words
Opaque contact lens comprising a lens body constructed of polymer and solid latex polymer particles directly bound to at least a portion of a surface of the lens.
Claim 2
Dependent Claim
28 words
Opaque contact lens comprising a lens body constructed of polymer and solid latex polymer particles directly bound to at least a portion of a surface of the lens.
Claim 3
Dependent Claim
21 words
An opaque contact lens as claimed in claim 1 wherein said latex particles are of the same material as the lens.
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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |