Patent US4668240A successfully refreshed from Google Patents.
US4668240A
Expired / Lapsed
US
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Pigment colored contact lenses and method for making same
Assignee: WJ ACQUISITION CORP
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Filing: 1985-12-16
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Granted: 1987-05-26
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Expires: 2005-12-16
Abstract
Abstract Colored contact lenses are produced by providing a contact lens constructed of polymer and coating at least a portion of the lens with coloring substance and binding polymer. The lens and binding polymers are bonded to each other by the reaction of functional groups selected from at least one of -COOH, -OH, and -NH-R, wherein R is hydrogen or alkyl, with functional groups selected from at least one of -NCO and epoxy.
Inventors
- 👤 Samuel Loshaek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00865; B29D11/00894; B29D11/00903; B29D11/00009; B29D11/00038; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; Y; Y10; Y10S; Y10S525/00; Y10S525/937
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
160 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, (b) coating at least a portion of a surface of the lens with a color coat comprising coloring substance, binding polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and an additional compound having at least two groups per molecule selected from at least one of --NCO and epoxy, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 2
Independent Claim
160 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, (b) coating at least a portion of a surface of the lens with a color coat comprising coloring substance, binding polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and an additional compound having at least two groups per molecule selected from at least one of --NCO and epoxy, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the additional compound contains two isocyanate groups.
Claim 4
Dependent Claim
19 words
The method of claim 2 wherein the additional compound is selected from hexamethylene diisocyanate, 2,4-toluene diisocyanate, and bis(isocyanatophenyl) methane.
Claim 5
Dependent Claim
62 words
The method of claim 3 wherein the lens polymer and binding polymer are formed from monomers comprising at least one monomer selected from acrylic acid, methacrylic acid, hydroxy C 1 to C 6 alkyl ester of acrylic and methacrylic acid, amino-C 1 to C 8 alkyl ester of acrylic and methacrylic acid, glycerol esters of acrylic and methacrylic acid, and mixtures thereof.
Claim 6
Dependent Claim
66 words
The method of claim 4 wherein the lens polymer and binding polymer further comprise at least one monomer selected from N-vinyl-2-pyrrolidone, C 1 to C 8 alkyl vinyl ethers, C 1 to C 8 alkyl esters of acrylic or methacrylic acid, C 1 to C 8 alkyl styrene, vinyl chloride, vinyl acetate, isoprene, and alkoxy-C 1 to C 8 alkyl ester of acrylic or methacrylic acid.
Claim 7
Dependent Claim
34 words
The method of claim 5 wherein the lens polymer and binding polymer are formed from a mixture of monomers comprising hydroxyethyl methacrylate, ethoxyethyl methacrylate and methacrylic acid and the additional compound is hexamethylene diisocyanate.
Claim 8
Dependent Claim
23 words
The method of claim 6 further comprising the step of applying a transparent, substantially pigment-free, coat comprising binding polymer over the color coat.
Claim 9
Dependent Claim
9 words
A lens made by the method of claim 1.
Claim 10
Dependent Claim
9 words
A lens made by the method of claim 2.
Claim 11
Dependent Claim
9 words
A lens made by the method of claim 3.
Claim 12
Dependent Claim
9 words
A lens made by the method of claim 4.
Claim 13
Dependent Claim
9 words
A lens made by the method of claim 5.
Claim 14
Dependent Claim
9 words
A lens made by the method of claim 6.
Claim 15
Dependent Claim
9 words
A lens made by the method of claim 7.
Claim 16
Independent Claim
131 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment and binding polymer having functional groups selected from at least one of --NCO and epoxy, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 17
Independent Claim
131 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment and binding polymer having functional groups selected from at least one of --NCO and epoxy, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 18
Dependent Claim
9 words
A lens made by the method of claim 15.
Claim 19
Independent Claim
131 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --NCO and epoxy, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment and binding polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 20
Independent Claim
131 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --NCO and epoxy, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment and binding polymer having functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 21
Dependent Claim
9 words
A lens made by the method of claim 17.
Claim 22
Independent Claim
150 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --NCO and epoxy, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment binding polymer having functional groups selected from at least one of --NCO and epoxy, and an additional compound having at least two groups per molecule selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 23
Independent Claim
150 words
A method for making a colored contact lens comprising the steps of: (a) providing a contact lens constructed of polymer having functional groups selected from at least one of --NCO and epoxy, (b) coating at least a portion of a surface of the lens with a color coat comprising at least one pigment binding polymer having functional groups selected from at least one of --NCO and epoxy, and an additional compound having at least two groups per molecule selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl, and (c) binding the lens polymer to the binding polymer by the reaction of the functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with the functional groups selected from at least one of --NCO and epoxy.
Claim 24
Dependent Claim
10 words
A contact lens made by the method of claim 19.
Claim 25
Dependent Claim
139 words
A colored contact lens comprising: (a) a lens body constructed of polymer (b) at least one pigment mixed with binding polymer on at least a portion of a surface of the lens, wherein the binding polymer and lens polymer are bonded to each other by the reaction of functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with functional groups selected from at least one of --NCO and epoxy, wherein the lens polymer and binding polymer are formed from at least one monomer selected from acrylic acid, methacrylic acid, hydroxy C 1 to C 6 alkyl ester of acrylic or methacrylic acid, amino C 1 to C 8 alkyl ester of acrylic or methacrylic acid, glycerol esters of acrylic or methacrylic acid and mixtures thereof.
Claim 26
Dependent Claim
139 words
A colored contact lens comprising: (a) a lens body constructed of polymer (b) at least one pigment mixed with binding polymer on at least a portion of a surface of the lens, wherein the binding polymer and lens polymer are bonded to each other by the reaction of functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or C 1 to C 8 alkyl with functional groups selected from at least one of --NCO and epoxy, wherein the lens polymer and binding polymer are formed from at least one monomer selected from acrylic acid, methacrylic acid, hydroxy C 1 to C 6 alkyl ester of acrylic or methacrylic acid, amino C 1 to C 8 alkyl ester of acrylic or methacrylic acid, glycerol esters of acrylic or methacrylic acid and mixtures thereof.
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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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |