US4532267A
Expired / Lapsed
US
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Vision correction lens made from an aminopolysaccharide compound or an ether or ester thereof
Assignee: WASHINGTON A CORP OF WA, University of, Regents of
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Filing: 1984-02-15
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Granted: 1985-07-30
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Expires: 2004-02-15
Abstract
Abstract An oxygen permeable, wettable, optically acceptable vision correction lens can be made from homopolymers of aminoglycans, substituted aminoglycans, or crosslinked polymers thereof.
Inventors
- 👤 G. Graham Allan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
C; C08; C08L; C08L5/00; C08L5/08
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
20 words
An oxygen permeable, wettable, optically acceptable vision correction lens comprising a polymer consisting essentially of a homopolymer of an aminoglycan.
Claim 2
Dependent Claim
20 words
An oxygen permeable, wettable, optically acceptable vision correction lens comprising a polymer consisting essentially of a homopolymer of an aminoglycan.
Claim 3
Dependent Claim
21 words
The vision correction lens of claim 1 wherein the amino groups of the homopolymer of the amino glycan have amide substituents.
Claim 4
Dependent Claim
15 words
The vision correction lens of claim 2 wherein the amide substituents are of natural origin.
Claim 5
Dependent Claim
15 words
The vision correction lens of claim 2 wherein the amide substituents are of synthetic origin.
Claim 6
Dependent Claim
12 words
The vision correction lens of claim 1 wherein the homopolymer is crosslinked.
Claim 7
Dependent Claim
18 words
The vision correction lens of claim 5 wherein the homopolymer is crosslinked using an aldehyde compound crosslinking agent.
Claim 8
Dependent Claim
24 words
The vision correction lens of claim 1 wherein the aminoglycan comprises a glucosamine, an N-acetyl glucosamine, a galactosamine, an N-acetyl galactosamine, or mixtures thereof.
Claim 9
Dependent Claim
16 words
The vision correction lens of claim 1 wherein the homopolymer is an ester of the homopolymer.
Claim 10
Dependent Claim
17 words
The vision correction lens of claim 8 wherein the ester of the homopolymer is a carboxylate ester.
Claim 11
Dependent Claim
22 words
The vision correction lens of claim 9 wherein the carboxylate ester is a butyrate, an acetate, a benzoate, or a succinate ester.
Claim 12
Dependent Claim
16 words
The vision correction lens of claim 1 wherein the homopolymer is an ether of the homopolymer.
Claim 13
Dependent Claim
25 words
The vision correction lens of claim 11 wherein the ether is a methyl ether, an ethyl ether, an hydroxy ethyl ether, or an isopropyl ether.
Claim 14
Dependent Claim
14 words
The vision correction lens of claim 11 wherein the ether is a silanol ether.
Claim 15
Dependent Claim
21 words
The vision correction lens of claim 1 wherein the lens is colored by reacting the homopolymer with a fiber reactive dye.
Claim 16
Dependent Claim
23 words
The vision correction lens of claim 1 wherein the vision correction lens also contains a physiologically active compound dispersed throughout the lens material.
Claim 17
Independent Claim
55 words
A method of forming a vision correction lens which comprises the steps of: (a) adding a lens forming amount of a solution of a homopolymer of an aminoglycan or a crosslinked homopolymers thereof in an appropriate solvent into a mold for stationary casting; (b) forming a lens blank or lens replica, and finishing the lens.
Claim 18
Independent Claim
55 words
A method of forming a vision correction lens which comprises the steps of: (a) adding a lens forming amount of a solution of a homopolymer of an aminoglycan or a crosslinked homopolymers thereof in an appropriate solvent into a mold for stationary casting; (b) forming a lens blank or lens replica, and finishing the lens.
Claim 19
Independent Claim
53 words
A method of forming a vision correction lens which comprises the steps of: (a) plasticizing a homopolymer of an aminoglycan or a crosslinked homopolymer thereof dissolved in an appropriate solvent to form a plasticized lens material; (b) forming the plasticizing material into a lens blank or lens replica; and (c) finishing the lens.
Claim 20
Independent Claim
53 words
A method of forming a vision correction lens which comprises the steps of: (a) plasticizing a homopolymer of an aminoglycan or a crosslinked homopolymer thereof dissolved in an appropriate solvent to form a plasticized lens material; (b) forming the plasticizing material into a lens blank or lens replica; and (c) finishing the lens.
Claim 21
Dependent Claim
20 words
An oxygen permeable, wettable, optically acceptable wound healing lens comprising a polymer consisting essentially of a homopolymer of an aminoglycan.
Claim 22
Dependent Claim
20 words
An oxygen permeable, wettable, optically acceptable wound healing lens comprising a polymer consisting essentially of a homopolymer of an aminoglycan.
Claim 23
Dependent Claim
20 words
The wound healing lens of claim 18 wherein the amino groups of the homopolymer of the aminoglycan have amide substituents.
Claim 24
Dependent Claim
15 words
The wound healing lens of claim 19 wherein the amide substituents are of natural origin.
Claim 25
Dependent Claim
15 words
The wound healing lens of claim 19 wherein the amide substituents are of synthetic origin.
Claim 26
Dependent Claim
12 words
The wound healing lens of claim 18 wherein the homopolymer is crosslinked.
Claim 27
Dependent Claim
18 words
The wound healing lens of claim 22 wherein the homopolymer is crosslinked using an aldehyde compound crosslinking agent.
Claim 28
Dependent Claim
24 words
The wound healing lens of claim 18 wherein the aminoglycan comprises a glucosamine, an N-acetyl glucosamine, a galactosamine, an N-acetyl galactosamine, or mixtures thereof.
Claim 29
Dependent Claim
16 words
The wound healing lens of claim 18 wherein the homopolymer is an ester of the homopolymer.
Claim 30
Dependent Claim
17 words
The wound healing lens of claim 25 wherein the ester of the homopolymer is a carboxylate ester.
Claim 31
Dependent Claim
22 words
The wound healing lens of claim 26 wherein the carboxylate ester is a butyrate, an acetate, a benzoate, or a succinate ester.
Claim 32
Dependent Claim
16 words
The wound healing lens of claim 18 wherein the homopolymer is an ether of the homopolymer.
Claim 33
Dependent Claim
25 words
The wound healing lens of claim 28 wherein the ether is a methyl ether, an ethyl ether, a hydroxy ethyl ether, or an isopropyl ether.
Claim 34
Dependent Claim
14 words
The wound healing lens of claim 28 wherein the ether is a silanol ether.
Claim 35
Dependent Claim
21 words
The wound healing lens of claim 18 wherein the lens is colored by reacting the homopolymer with a fiber reactive dye.
Claim 36
Dependent Claim
23 words
The wound healing lens of claim 18 wherein the wound healing lens also contains a physiologically active compound dispersed throughout the lens material.
Claim 37
Dependent Claim
13 words
The lens of claim 18 wherein the lens parameters provide optical vision correction.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |