US5223149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trivalent silver water treatment compositions
Assignee: Jonas N and Co Inc
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Filing: 1992-05-18
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Granted: 1993-06-29
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Expires: 2012-05-18
Abstract
Abstract A method for controlling the growth of bacteria and algae in utilitarian bodies of water such as industrial cooling towers, swimming pools and hot tubs is described. The method comprises adding to the water novel trivalent silver compounds. Said compounds are light stable and can be supplied as liquid concentrates which will not precipitate any silver whatsoever from saline waters nor will the concentrates stain skin or discolor surfaces. Said compounds meet the rigid EPA standards of killing 100% of select coliforms within ten minutes and are efficacious at concentrations as low as 1-2 PPM.
Inventors
- 👤 Marvin S. Antelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/50; C02F1/505; C02F2103/00; C02F2103/42; Y; Y10; Y10S; Y10S422/00; Y10S422/905
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
34 words
A method for limiting the growth of bacteria and algae in the water of swimming pools, industrial cooling towers, hot tubs and reservoirs which comprises adding to the water a stable trivalent silver compound.
Claim 2
Independent Claim
34 words
A method for limiting the growth of bacteria and algae in the water of swimming pools, industrial cooling towers, hot tubs and reservoirs which comprises adding to the water a stable trivalent silver compound.
Claim 3
Dependent Claim
15 words
The method as claimed in claim 1 wherein the trivalent silver compound is a periodate.
Claim 4
Dependent Claim
23 words
The method as claimed in claim 1 wherein the said water is salt water, and wherein no silver halide is caused to precipitate.
Claim 5
Dependent Claim
23 words
The method as claimed in claim 2 wherein the said water is salt water, and wherein no silver halide is caused to precipitate.
Claim 6
Dependent Claim
18 words
The method as claimed in claim 1 wherein said trivalent silver compound is supplied as a liquid concentrate.
Claim 7
Dependent Claim
18 words
The method as claimed in claim 2 where said trivalent silver periodate is supplied as a liquid concentrate.
Claim 8
Dependent Claim
19 words
The method as claimed in claim 1 wherein said trivalent silver compound is employed without adding an oxidizing agent.
Claim 9
Dependent Claim
19 words
The method as claimed in claim 2 wherein said trivalent silver periodate is employed without adding an oxidizing agent.
Claim 10
Dependent Claim
25 words
The method as claimed in claim 1 where said trivalent silver compound concentrate will not stain skin or surfaces with which it is in contact.
Claim 11
Dependent Claim
25 words
The method as claimed in claim 2 where said trivalent silver periodate concentrate will not stain skin or surfaces with which it is in contact.
Claim 12
Dependent Claim
37 words
The method as claimed in claim 1 where said trivalent silver compound is light stable so as not to discolor or leave black silver films on the inner surface of vessels containing the water to be treated.
Claim 13
Dependent Claim
37 words
The method as claimed in claim 2 where said trivalent silver periodate is light stable so as not to discolor or leave black silver films on the inner surface of vessels containing the water to be treated.
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) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |