US4259202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning and preservative solution for contact lenses
Assignee: Menicon Co Ltd
•
Filing: 1979-06-04
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Granted: 1981-03-31
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Expires: 1999-06-04
Abstract
Abstract A cleaning and preservative solution for contact lenses which contains as an effective ingredient a monoester of saccharose with a fatty acid having the general formula: ##STR1## wherein R is a saturated or unsaturated aliphatic hydrocarbon group having 8 to 18 carbon atoms. The solution has excellent cleaning and preservative effects. Contact lenses can be cleaned during the preservation of the lenses with soaking them in the solution.
Inventors
- 👤 Kyoichi Tanaka
- 👤 Akira Tsuzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:25
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0078; A; A61; A61L; A61L12/00; A61L12/08; A61L12/14; C11D1/00; C11D1/66; C11D1/667; C11D1/662
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A cleaning and preservative solution for contact lenses comprised of: as an effective ingredient a monoester of saccharose in a concentration of 0.01 to 0.5 w/v %, a compound selected from the group consisting of a polysaccharide and a polysaccharide derivative, in a concentration of 0.01 to 10 w/v %: said monoester being a saccharose fatty ester having the following general formula: ##STR3## wherein R is a saturated or unsaturated aliphatic hydrocarbon group having 8 to 18 carbon atoms; and an alkali metal salt of a saturated fatty acid in a concentration of 0.001 to 1 w/v % having an alkyl group of 7 to 18 carbon atoms.
Claim 2
Dependent Claim
108 words
A cleaning and preservative solution for contact lenses comprised of: as an effective ingredient a monoester of saccharose in a concentration of 0.01 to 0.5 w/v %, a compound selected from the group consisting of a polysaccharide and a polysaccharide derivative, in a concentration of 0.01 to 10 w/v %: said monoester being a saccharose fatty ester having the following general formula: ##STR3## wherein R is a saturated or unsaturated aliphatic hydrocarbon group having 8 to 18 carbon atoms; and an alkali metal salt of a saturated fatty acid in a concentration of 0.001 to 1 w/v % having an alkyl group of 7 to 18 carbon atoms.
Claim 3
Dependent Claim
52 words
The cleaning and preservative solution of claim 1, in which the monoester of saccharose is at least one member selected from the group consisting of saccharose monodecylate, saccharose monoundecylate, saccharose monolaurate, saccharose monotridecylate, saccharose monomyristate, saccharose monononanate, saccharose monopentadecylate, saccharose monopalmitate, saccharose monoheptadecylate, saccharose monostearate, saccharose monooleate, saccharose monolinoleate amd saccharose monolinolenate.
Claim 4
Dependent Claim
84 words
The cleaning and preservative solution of claim 1, in which the polysaccharide or its derivative is at least one member selected from the group consisting of alkali metal salt of alginic acid, alkali metal salt of pectic acid, pectic acid derivative, dextran, xanthan gum, tragacanth gum, agar, locust bean gum, guar gum, methyl cellulose, alkali metal salt of carboxymethyl cellulose, alkali metal salt of carboxyethyl cellulose, methyl propyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose and alkali metal salt of chondroitin sulfuric acid.
Claim 5
Dependent Claim
25 words
The cleaning and preservative solution of claim 1, which further contains an ophthalmology-physiologically acceptable buffer in a concentration of about 0.01 to about 1 mole/liter.
Claim 6
Dependent Claim
24 words
The cleaning and preservative solution of claim 1, which further contains an ophthalmology-physiologically acceptable bactericide in a concentration of 0.0001 to 0.5 w/v %.
Claim 7
Dependent Claim
38 words
The cleaning and preservative solution of claim 1, which further contains an ophthalmology-physiologically acceptable buffer in a concentration of about 0.01 to 1 mole/liter and an ophthalmology-physiologically acceptable bactericide in a concentration of 0.0001 to 0.5 w/v %.
References Cited (Backward Citations)
US2893990A
Cited
US2999858A
Cited
US3141013A
Cited
US3882036A
Cited
US3954644A
Cited
US3702364A
Cited
US3872020A
Cited
US3884826A
Cited
US4013576A
Cited
US4046706A
Cited
US4104187A
Cited
US4127423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |