Patent US4477438A successfully refreshed from Google Patents.
US4477438A
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Hydrogen peroxide composition
Assignee: Ethicon Inc
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Filing: 1982-11-12
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Granted: 1984-10-16
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Expires: 2002-11-12
Abstract
Abstract An antimicrobial composition containing hydrogen peroxide is disclosed. The composition is non-corrosive to surgical instruments and contains 4%-7% hydrogen peroxide, 0.1% to 0.3% of a chelating agent, 0.1% of a water soluble zinc compound, 0.1% to 0.3% of a sodium cocoyl sarcosinate or is fatty acid-based analogs, an anionic surfactant selected from the group consisting of sodium n-decyl diphenylether disulfonate or sodium lauryl sulfate and a buffer system to maintain the pH of the composition in a pH range of from 4 to 6.
Inventors
- 👤 George W. Willcockson, deceased
- 👤 David C. F. Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48; A; A01; A01N; A01N59/00; C11D3/39; C11D3/3947
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
An aqueous disinfecting solution having a buffered pH of from 4 to 6.0 and which is not corrosive to surgical instruments comprising from 4% to 6% by weight hydrogen peroxide, from 0.1% to 0.3% by weight of an anionic surfactant selected from the group consisting of sodium lauryl sulfate and sodium n-decyl diphenylether disulfonate; from 0.1% to 0.3% by weight of a sarcosinate surfactant selected from the group consisting of sodium cocoyl sarcosinate and sodium lauryl sarcosinate; 0.1% by weight of a soluble zinc compound selected from the group consisting of zinc sulfate, zinc acetate, zinc nitrate and zinc gluconate and from 0.1% to 0.3% by weight of a nitrogen containing chelating agent selected from the group consisting of N-(hydroxyethyl) ethylenediamine triacetic acid, ethylenediamine tetracetic acid and diethylenetriamine pentaacetic acid.
Claim 2
Dependent Claim
130 words
An aqueous disinfecting solution having a buffered pH of from 4 to 6.0 and which is not corrosive to surgical instruments comprising from 4% to 6% by weight hydrogen peroxide, from 0.1% to 0.3% by weight of an anionic surfactant selected from the group consisting of sodium lauryl sulfate and sodium n-decyl diphenylether disulfonate; from 0.1% to 0.3% by weight of a sarcosinate surfactant selected from the group consisting of sodium cocoyl sarcosinate and sodium lauryl sarcosinate; 0.1% by weight of a soluble zinc compound selected from the group consisting of zinc sulfate, zinc acetate, zinc nitrate and zinc gluconate and from 0.1% to 0.3% by weight of a nitrogen containing chelating agent selected from the group consisting of N-(hydroxyethyl) ethylenediamine triacetic acid, ethylenediamine tetracetic acid and diethylenetriamine pentaacetic acid.
Claim 3
Dependent Claim
42 words
An aqueous disinfecting solution of claim 1 in which the anionic surfactant is sodium n-decyl diphenyl ether disulfonate; the sarcosinate surfactant is sodium cocoyl sarcosinate; and, the soluble zinc compound is zinc sulfate, and the chelating agent is N-(hydroxyl-ethyl) ethylenediamine triacetic acid.
Claim 4
Dependent Claim
138 words
A process of disinfecting metallic surgical instruments without excessively corroding the instruments comprising contacting said instruments with a solution having a buffered pH of from 4 to 6.0 and comprising from 4% to 6% by weight hydrogen peroxide, from 0.1% to 0.3% by weight of an anionic surfactant selected from the group consisting of sodium lauryl sulfate and sodium n-decyl diphenylether disulfonate; from 0.1% to 0.3% by weight of a sarcosinate surfactant selected from the group consisting of sodium cocoyl sarcosinate and sodium lauryl sarcosinate; 0.1% by weight of a soluble zinc compound selected from the group consisting of zinc sulfate, zinc acetate, zinc nitrate and zinc gluconate and from 0.1% to 0.3% by weight of a nitrogen containing chelating agent selected from the group consisting of N-(hydroxy-ethyl) ethylenediamine triacetic acid, ethylenediamine tetracetic acid and diethylenetriamine pentaacetic acid.
Claim 5
Dependent Claim
138 words
A process of disinfecting metallic surgical instruments without excessively corroding the instruments comprising contacting said instruments with a solution having a buffered pH of from 4 to 6.0 and comprising from 4% to 6% by weight hydrogen peroxide, from 0.1% to 0.3% by weight of an anionic surfactant selected from the group consisting of sodium lauryl sulfate and sodium n-decyl diphenylether disulfonate; from 0.1% to 0.3% by weight of a sarcosinate surfactant selected from the group consisting of sodium cocoyl sarcosinate and sodium lauryl sarcosinate; 0.1% by weight of a soluble zinc compound selected from the group consisting of zinc sulfate, zinc acetate, zinc nitrate and zinc gluconate and from 0.1% to 0.3% by weight of a nitrogen containing chelating agent selected from the group consisting of N-(hydroxy-ethyl) ethylenediamine triacetic acid, ethylenediamine tetracetic acid and diethylenetriamine pentaacetic acid.
Claim 6
Dependent Claim
39 words
The process of claim 3 in which the anionic surfactant is sodium n-decyl diphenylether disulfonate; the sarcosinate surfactant is sodium cocoyl sarcosinate; and, the soluble zinc compound is zinc sulfate, and the chelating agent is N-(hydroxylethyl) ethylenediamine triacetic acid.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |