US5098582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divalent silver oxide bactericides
Assignee: Jonas N and Co Inc
•
Filing: 1991-05-09
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Granted: 1992-03-24
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Expires: 2011-05-09
Abstract
Abstract Divalent silver oxide provides a source for divalent bactericidal silver ions in the presence of persulfate. This oxide is especially effective when applied to water used in industrial cooling towers, hot tubs and swimming pools and conforms to stringent EPA requirements of 100% kills of 100K/cc Streptococcus faecalis within 10 minutes. The oxide also can be used in water with exceptionally high salt content without halide curdy precipitate formation and will not stain the skin of users who may inadvertently be exposed to it.
Inventors
- 👤 Marvin S. Antelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; C02F1/505; C02F1/72; C02F1/722; C02F2103/00; C02F2103/42; Y; Y10; Y10S; Y10S422/00; Y10S422/905
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A method for controlling the growth of bacteria in the water of swimming pools, hot tubs and industrial cooling towers which comprises adding to the water divalent silver oxide in the presence of an oxidizing agent so as to provide a source of divalent silver ions.
Claim 2
Independent Claim
46 words
A method for controlling the growth of bacteria in the water of swimming pools, hot tubs and industrial cooling towers which comprises adding to the water divalent silver oxide in the presence of an oxidizing agent so as to provide a source of divalent silver ions.
Claim 3
Dependent Claim
14 words
A method as claimed in claim 1 where the oxidizing agent is a persulfate.
Claim 4
Dependent Claim
41 words
A method according to claim 1 which can be utilized in said waters where they contain sodium chloride concentrations as high as 5,000 parts per million or an aggregate amount of halide salts equivalent to the chloride concentration of said salt.
Claim 5
Dependent Claim
21 words
A method according to claim 1 which will not leave silver stains on the user's unprotected skin due to inadvertent exposure.
References Cited (Backward Citations)
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Cited
US2508602A
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US2521713A
Cited
US4092245A
Cited
US4492618A
Cited
US4749537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |