US5576212A
Expired / Lapsed
US
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Oxidizing composition in powder form
Assignee: Biosensor Laboratories Co Ltd
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Filing: 1994-11-09
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Granted: 1996-11-19
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Expires: 2014-11-09
Abstract
Abstract An oxidizing composition in the form of powder for oxidizing a chemiluminescent substance, including an oxidizing agent and a binder.
Inventors
- 👤 Katsu Honzawa
- 👤 Seiji Kawaguchi
- 👤 Kazuhiro Atsumi
- 👤 Fumihiko Shimomura
- 👤 Takahiko Ishiguro
- 👤 Hisaya Motojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:43
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/58; G01N33/582; G01N33/52; Y; Y10; Y10T; Y10T436/00; Y10T436/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
An oxidizing agent composition in dry particulate form comprising effective amounts of: (a) sodium perborate tetrahydrate, (b) sodium carbonate, (c) citric acid, and (d) binder, wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 2
Dependent Claim
69 words
An oxidizing agent composition in dry particulate form comprising effective amounts of: (a) sodium perborate tetrahydrate, (b) sodium carbonate, (c) citric acid, and (d) binder, wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 3
Dependent Claim
26 words
An oxidizing agent composition according to claim 1, wherein the binder is selected from the group consisting of dextran, hydroxypropylmethylcellulose, hydroxypropyl cellulose and polyoxyethylene sorbitan monolaurate.
Claim 4
Dependent Claim
24 words
An oxidizing agent composition according to claim 1, wherein the weight ratio of the sodium perborate tetrahydrate to the sodium carbonate is about 1:1.
Claim 5
Dependent Claim
54 words
An oxidizing agent composition in dry particulate form comprising: (a) about 2.5% weight of sodium perborate tetrahydrate, (b) about 74.5% weight of sodium carbonate, (c) about 22.5% weight of dextran, and (d) about 0.5% weight of anhydrous citric acid, wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 6
Dependent Claim
54 words
An oxidizing agent composition in dry particulate form comprising: (a) about 2.5% weight of sodium perborate tetrahydrate, (b) about 74.5% weight of sodium carbonate, (c) about 22.5% weight of dextran, and (d) about 0.5% weight of anhydrous citric acid, wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 7
Dependent Claim
84 words
An oxidizing agent composition in dry particulate form consisting essentially of: (a) sodium perborate tetrahydrate; (b) sodium carbonate; (c) anhydrous citric acid; and (d) a binder selected from the group consisting of dextran, hydroxypropylmethylcellulose, hydoxypropyl cellulose and polyoxyethylene sorbitan monolaurate; wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 8
Dependent Claim
84 words
An oxidizing agent composition in dry particulate form consisting essentially of: (a) sodium perborate tetrahydrate; (b) sodium carbonate; (c) anhydrous citric acid; and (d) a binder selected from the group consisting of dextran, hydroxypropylmethylcellulose, hydoxypropyl cellulose and polyoxyethylene sorbitan monolaurate; wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm.
Claim 9
Dependent Claim
166 words
An oxidizing agent composition in dry particulate form consisting essentially of: (a) sodium perborate tetrahydrate; (b) sodium carbonate; (c) anhydrous citric acid; and (d) a binder selected from the group consisting of dextran, hydroxypropylmethylcellulose, hydroxypropyl cellulose and polyoxyethylene sorbitan monolaurate, wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm, said oxidizing agent composition being a product of the process comprising the steps of: (i) adding the sodium perborate tetrahydrate and the binder into an aqueous solution of the anhydrous citric acid to obtain a paste mixture; (ii) drying the paste mixture by heating to form a dry solid mixture; (iii) crushing or pulverizing the dry solid mixture to obtain a powder mixture; (iv) adding and mixing the sodium carbonate to the powder mixture, and pulverizing to obtain the oxidizing agent composition.
Claim 10
Dependent Claim
166 words
An oxidizing agent composition in dry particulate form consisting essentially of: (a) sodium perborate tetrahydrate; (b) sodium carbonate; (c) anhydrous citric acid; and (d) a binder selected from the group consisting of dextran, hydroxypropylmethylcellulose, hydroxypropyl cellulose and polyoxyethylene sorbitan monolaurate, wherein the ratio of the sodium perborate tetrahydrate to the sodium carbonate contained in said composition is in the range of about 1:1 to about 1:30 by weight, and wherein the particle size of said oxidizing agent composition is less than about 1,000 μm, said oxidizing agent composition being a product of the process comprising the steps of: (i) adding the sodium perborate tetrahydrate and the binder into an aqueous solution of the anhydrous citric acid to obtain a paste mixture; (ii) drying the paste mixture by heating to form a dry solid mixture; (iii) crushing or pulverizing the dry solid mixture to obtain a powder mixture; (iv) adding and mixing the sodium carbonate to the powder mixture, and pulverizing to obtain the oxidizing agent composition.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
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