Patent US4518520A successfully refreshed from Google Patents.
US4518520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaner having improved dissolution time and clarity and improved of preparation
Assignee: Warner Lambert Co LLC
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Filing: 1983-04-22
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Granted: 1985-05-21
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Expires: 2003-04-22
Abstract
Abstract A cleansing composition is disclosed that is particularly suited for compaction into tablet form, and comprises a phosphate salt, an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, said combination having a portion present in a compacted granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluorocarbon, said cleansing composition being capable of cleansing stained surfaces and the like with a soaking time of five minutes or less when dissolved in aqueous solution and producing a marked improvement in clarity of solution upon disintegration over the prior art.
Inventors
- 👤 Anthony B. J. Eoga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:37
CPC Classifications
A; A61; A61Q; A61Q11/00; A61Q11/02; A61K; A61K8/00; A61K8/02; A61K8/0216; A61K8/022; A61K8/0225; A61K8/18; A61K8/19; A61K8/22; A61K8/24; A61K8/72; A61K8/81; A61K8/8123; C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0052; C11D3/39; C11D3/3942; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/16; A61K2800/00; A61K2800/20; A61K2800/22; A61K2800/222; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
126 words
An improved effervescent cleansing composition in tablet form comprising: (a) about 20% to about 45% by weight of the final composition of a phosphate salt; (b) an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, said combination having a portion present in a compacted, granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluorocarbon, said cleansing composition being capable of thoroughly cleansing stained surfaces within a soaking time of about five minutes when dissolved in aqueous solution.
Claim 2
Dependent Claim
126 words
An improved effervescent cleansing composition in tablet form comprising: (a) about 20% to about 45% by weight of the final composition of a phosphate salt; (b) an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, said combination having a portion present in a compacted, granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluorocarbon, said cleansing composition being capable of thoroughly cleansing stained surfaces within a soaking time of about five minutes when dissolved in aqueous solution.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein said phosphate salt comprises an alkali metal phosphate.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein said phosphate salt comprises trisodium phosphate.
Claim 5
Dependent Claim
23 words
The composition of claim 1 wherein said perborate salt is selected from the group consisting of alkali metal and alkaline earth metal perborates.
Claim 6
Dependent Claim
14 words
The composition of claim 4 wherein said perborate salt comprises an alkali metal perborate.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein said alkali metal perborate is sodium perborate.
Claim 8
Dependent Claim
22 words
The composition of claim 6 wherein said perborate is present in an amount of from about 50% to about 65% by weight.
Claim 9
Dependent Claim
23 words
The composition of claim 1 wherein said anhydrous perborate is present in an amount of from about 20% to about 25% by weight.
Claim 10
Dependent Claim
13 words
The composition of claim 8 wherein said anhydrous perborate comprises anhydrous sodium perborate.
Claim 11
Dependent Claim
14 words
The composition of claim 1 wherein said polymeric fluorocarbon includes at least one fluroolefin.
Claim 12
Dependent Claim
11 words
The composition of claim 10 wherein said polymeric fluorocarbon comprises polytetrafluoroethylene.
Claim 13
Dependent Claim
22 words
The composition of claim 11 wherein said polymeric fluorocarbon is present in an amount from about 0.33% to about 0.66% by weight.
Claim 14
Dependent Claim
28 words
The composition of claim 1 further including at least one material selected from the group consisting of builders, detergents, lubricants, sequestrants, perfumes, flavorings, excipients, disintegrants, and mixtures, thereof.
Claim 15
Dependent Claim
17 words
The composition of claim 13 wherein said sequestrant comprises ethylene diaminetetracetic acid and its alkali metal salts.
Claim 16
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 1.
Claim 17
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 7.
Claim 18
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 9.
Claim 19
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 12.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |