Patent CA529906A successfully refreshed from Google Patents.
US5114670A
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Process for sterilizing surfaces
Assignee: Liqui Box Corp
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Filing: 1990-08-30
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Granted: 1992-05-19
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Expires: 2010-08-30
Abstract
Abstract A process is disclosed for sterilizing surfaces utilizing hydrogen peroxide gas in combination with preselected ultraviolet energy.
Inventors
- 👤 Craig L. Duffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:38
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/20; A61L2/02; A61L2/08; A61L2/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A process for sterilizing a surface of an article comprising the steps of: providing a sterilization chamber to sterilize at least a surface of an article; introducing a gaseous hydrogen peroxide sterilant into the sterilization chamber substantially free of hydrogen peroxide in liquid phase; irradiating the sterilant surface of the article in the sterilization chamber with ultraviolet radiation in an amount to achieve sterilization of the surface; and said irradiating step occurs simultaneously with the gaseous hydrogen peroxide being in said sterilization chamber.
Claim 2
Dependent Claim
83 words
A process for sterilizing a surface of an article comprising the steps of: providing a sterilization chamber to sterilize at least a surface of an article; introducing a gaseous hydrogen peroxide sterilant into the sterilization chamber substantially free of hydrogen peroxide in liquid phase; irradiating the sterilant surface of the article in the sterilization chamber with ultraviolet radiation in an amount to achieve sterilization of the surface; and said irradiating step occurs simultaneously with the gaseous hydrogen peroxide being in said sterilization chamber.
Claim 3
Dependent Claim
17 words
The process of claim 1, wherein said introducing step introduces heated hydrogen peroxide in the sterilization chamber.
Claim 4
Dependent Claim
26 words
The process of claim 2, wherein said heated hydrogen peroxide gas is heated to a temperature in range of from about 135° F. to 145° F.
Claim 5
Dependent Claim
23 words
The process of claim 3, wherein said ultraviolet radiation has a wavelength in the range of from about 200 nm to 280 nm.
Claim 6
Dependent Claim
16 words
The process of claim 4, wherein said ultraviolet radiation is provided at wavelengths of 254 nm.
Claim 7
Dependent Claim
27 words
The process of claim 5, wherein said means for irradiating with ultraviolet energy is operable for a time period of from about 20 sec. to 35 sec.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |