Patent US4871532A successfully refreshed from Google Patents.
US4871532A
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Mouth care products
Assignee: Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen Theehandel NV
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Filing: 1988-01-07
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Granted: 1989-10-03
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Expires: 2008-01-07
Abstract
Abstract Mouth-care products containing an oxidoreductase and a combination of an 8-hydroxy-quinoline and a compound yielding zinc ions.
Inventors
- 👤 Hendrik Hoogendoorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/66; A61Q; A61Q11/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
An oxidoreductase-containing tooth-cleaning agent comprising an oxidoreductase yielding hydrogen peroxide upon breaking down a substrate in a quantity of between 0.01 and 500 units per gram/milliliter of tooth cleaning agent, each unit of enzyme being the quantity which breaks down 1 μ-mol of substrate per minute at 30° C. and under standard conditions; a 8-hydroxyquinoline, ester thereof or acid addition salt thereof; and a water-soluble compound yielding Zn ions, said 8-hydroxyquinoline, ester and acid addition salt thereof being present in a concentration of between 5×10 -5 and 10 -1 % by weight and said zinc in ionic form being present in a concentration of between 10 -5 and 10 -1 % by weight and said zinc in ionic form being present in a concentration of between 10 -5 and 10 1 % by weight.
Claim 2
Dependent Claim
134 words
An oxidoreductase-containing tooth-cleaning agent comprising an oxidoreductase yielding hydrogen peroxide upon breaking down a substrate in a quantity of between 0.01 and 500 units per gram/milliliter of tooth cleaning agent, each unit of enzyme being the quantity which breaks down 1 μ-mol of substrate per minute at 30° C. and under standard conditions; a 8-hydroxyquinoline, ester thereof or acid addition salt thereof; and a water-soluble compound yielding Zn ions, said 8-hydroxyquinoline, ester and acid addition salt thereof being present in a concentration of between 5×10 -5 and 10 -1 % by weight and said zinc in ionic form being present in a concentration of between 10 -5 and 10 -1 % by weight and said zinc in ionic form being present in a concentration of between 10 -5 and 10 1 % by weight.
Claim 3
Dependent Claim
24 words
The tooth-cleaning agent according to claim 1, wherein said 8-hydroxyquinoline, ester thereof or acid addition salt thereof is substituted by at least one halogen.
Claim 4
Dependent Claim
19 words
The tooth-cleaning agent of claim 1, wherein the water-soluble compound yielding Zn ions is a zinc salt of 8-hydroxyquinoline.
Claim 5
Dependent Claim
19 words
The tooth-cleaning agent of claim 2, wherein the water-soluble compound yielding Zn ions is a zinc salt of 8-hydroxyquinoline.
Claim 6
Dependent Claim
53 words
The tooth-cleaning agent according to claim 1, wherein the 8-hydroxyquinoline, ester thereof or acid addition salt thereof is present in a concentration of between 5×10 -4 and 10 -3 % by weight and said zinc in ionic form is present in a concentration of between 10 -4 and 5×10 -3 % by weight.
Claim 7
Dependent Claim
53 words
The tooth-cleaning agent according to claim 2, wherein the 8-hydroxyquinoline, ester thereof or acid addition salt thereof is present in a concentration of between 5×10 -4 and 10 -3 % by weight and said zinc in ionic form is present in a concentration of between 10 -4 and 5×10 -3 % by weight.
Claim 8
Dependent Claim
51 words
The tooth-cleaning agent according to claim 3, wherein the 8-hydroxyquinoline, ester thereof or acid addition salt thereof is present in a concentration of between 5×10 -4 and 10 -3 % and said zinc in ionic form is present in a concentration of between 10 -4 and 5×10 -3 % by weight.
Claim 9
Dependent Claim
53 words
The tooth-cleaning agent according to claim 4, wherein the 8-hydroxyquinoline, ester thereof or acid addition salt thereof is present in a concentration of between 5×10 -4 and 10 -3 % by weight and said zinc in ionic form is present in a concentration of between 10 -4 and 5×10 -3 % by weight.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |