US4955901A
Expired / Lapsed
US
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Intraocular implant having coating layer
Assignee: Canon Inc
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Filing: 1989-05-30
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Granted: 1990-09-11
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Expires: 2009-05-30
Abstract
Abstract An intraocular implant comprises a lens substrate having on the surface thereof a coating layer, the coating layer being comprised of a specific compound.
Inventors
- 👤 Toshiji Nishiguchi
- 👤 Moriyuki Okamura
- 👤 Ikuo Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:20
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61L; A61L27/00; A61L27/28; A61L27/34; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; A61F2/0077; A61F2002/0081; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
An intraocular implant, comprising a lens substrate having on the surface thereof a coating layer, wherein said coating layer is comprised of at least one compound selected from the group consisting of; an amino compound represented by the general formula: R 1 -NH 2 , wherein R 1 represents a hydrocarbon group having not more than 10 carbon atoms; a cyan compound represented by the general formula: R 2 -CN, wherein R 2 represents a hydrocarbon group having not more than 10 carbon atoms; an azo compound represented by the general formula: R 3 -N═N-R 4 , wherein R 3 and R 4 represent hydrocarbon groups having not more than 10 carbon atoms in total or hydrogen atoms: and an amino acid represented by the general formula: R 5 -CH(NH 2 )COOH, wherein R 5 represents a substituent constituted of C, H or N.
Claim 2
Dependent Claim
144 words
An intraocular implant, comprising a lens substrate having on the surface thereof a coating layer, wherein said coating layer is comprised of at least one compound selected from the group consisting of; an amino compound represented by the general formula: R 1 -NH 2 , wherein R 1 represents a hydrocarbon group having not more than 10 carbon atoms; a cyan compound represented by the general formula: R 2 -CN, wherein R 2 represents a hydrocarbon group having not more than 10 carbon atoms; an azo compound represented by the general formula: R 3 -N═N-R 4 , wherein R 3 and R 4 represent hydrocarbon groups having not more than 10 carbon atoms in total or hydrogen atoms: and an amino acid represented by the general formula: R 5 -CH(NH 2 )COOH, wherein R 5 represents a substituent constituted of C, H or N.
Claim 3
Dependent Claim
31 words
The intraocular implant according to claim 1, wherein said lens substrate comprises a material selected from the group consisting of polymethyl methacrylate, hydroxyethyl methacrylate, a silicone resin and a polyurethane resin.
Claim 4
Dependent Claim
16 words
The intraocular implant according to claim 1, wherein said coating layer is formed by plasma polymerization.
Claim 5
Dependent Claim
17 words
The intraocular implant according to claim 1, wherein said coating layer is formed by vacuum deposition polymerization.
Claim 6
Dependent Claim
20 words
The intraocular implant according to claim 1, wherein said coating layer has a thickness of from 50 to 20,000 Å.
Claim 7
Dependent Claim
20 words
The intraocular implant according to claim 5, wherein said coating layer has a thickness of from 50 to 3,000 Å.
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |