US4996146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid sterilization enzymatic process with persistence
Assignee: Symbollon Corp
•
Filing: 1990-03-05
•
Granted: 1991-02-26
•
Expires: 2010-03-05
Abstract
Abstract An enzymatic sterilization system is disclosed which is effective against viruses and other organisms. Methods are disclosed to increase the rate of and reduce the cost for sterilization with this chemistry as compared to the prior art. Methods are disclosed to formulate a sterlizing chemistry which actively maintains a sterile environment over a defined period of time.
Inventors
- 👤 Jack H. Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/12; A01N63/00; A01N63/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A method for sterilizing an aqueous-based medium containing pathogens consisting essentially of the steps of: selecting four components including a source of peroxide, a peroxidase selected from the class contained in the E.C. #1.11.1.7, a salt of iodide, and buffering means selected to render the pH of said aqueous-based medium between a pH of about 6.5 and 4.0; storing said four components in a nonreacting state and admixing the four components in said aqueous-based medium under conditions and for a time sufficient to cause a catalyzed reaction for generating sterilizing agents from said source of iodide to sterilize said aqueous-based medium.
Claim 2
Independent Claim
101 words
A method for sterilizing an aqueous-based medium containing pathogens consisting essentially of the steps of: selecting four components including a source of peroxide, a peroxidase selected from the class contained in the E.C. #1.11.1.7, a salt of iodide, and buffering means selected to render the pH of said aqueous-based medium between a pH of about 6.5 and 4.0; storing said four components in a nonreacting state and admixing the four components in said aqueous-based medium under conditions and for a time sufficient to cause a catalyzed reaction for generating sterilizing agents from said source of iodide to sterilize said aqueous-based medium.
Claim 3
Dependent Claim
25 words
A method for sterilizing an aqueous-based medium, as defined in claim 1, wherein the molar ratio of iodide to peroxide is between 0.5 and 1.0.
Claim 4
Dependent Claim
25 words
A method for sterilizing an aqueous-based medium, as defined in claim 2, wherein the concentration of peroxide in said medium is between 0.0003% and 0.03%.
Claim 5
Dependent Claim
29 words
A method for sterilizing an aqueous-based medium, as defined in claim 3, wherein said salt of iodide is selected from the class consisting of sodium iodide and potassium iodide.
Claim 6
Dependent Claim
25 words
A method for sterilizing an aqueous-based medium, as defined in claim 4, wherein said four components are maintained inactive until introduced into said aqueous-based medium.
Claim 7
Dependent Claim
61 words
A composition for sterilizing an aqueous-based medium consisting essentially of a source of peroxide, a peroxidase selected from the class contained in the E.C. #1.11.1.7, a salt of iodide and buffer means to render the pH of said aqueous-based medium between a pH of about 6.5 and 4.0 said composition containing the ingredients in amounts sufficient to sterilize an aqueous-based medium.
Claim 8
Dependent Claim
61 words
A composition for sterilizing an aqueous-based medium consisting essentially of a source of peroxide, a peroxidase selected from the class contained in the E.C. #1.11.1.7, a salt of iodide and buffer means to render the pH of said aqueous-based medium between a pH of about 6.5 and 4.0 said composition containing the ingredients in amounts sufficient to sterilize an aqueous-based medium.
Claim 9
Dependent Claim
22 words
A composition, as defined in claim 6, wherein peroxide is present in said composition at a concentration of between 0.0003% and 0.03%.
References Cited (Backward Citations)
DE2004647A1
Cited
DE2718385A1
Cited
WO1981000207A1
Cited
US4473550A
Cited
US4476108A
Cited
WO1982001469A1
Cited
US4597975A
Cited
US4588586A
Cited
US4576817A
Cited
US4670178A
Cited
US4719106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |