Patent US4643835A successfully refreshed from Google Patents.
US4643835A
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Asiatic clam control chemical
Assignee: ChampionX LLC
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Filing: 1985-08-28
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Granted: 1987-02-17
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Expires: 2005-08-28
Abstract
Abstract Asiatic clams can be controlled by treating the waters in which they grow with a composition comprising the combination of a chlorine solution and a bromide salt capable of releasing bromide ions to the chloride solution.
Inventors
- 👤 Sandra Koeplin-Gall
- 👤 Ronald H. Schild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/766
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A method for controlling Asiatic clams which are present in waters which comprises treating these waters with a composition comprising the combination of chlorine solution and a bromide salt capable of releasing bromide ions to the chlorine solution, and from about 1 up to about 10 percent by weight of a water-soluble biodispersant chosen from the group consisting of ethylene oxide condensates with propylene oxide adducts or propylene glycol having an HLB between 4-10 and a molecular weight between 1,000-5,000, nonionic polyethoxylated straight chain alcohols, tris cyanoethylated cocodiamines, polyoxyethylene sorbitan ester/acids, nonionic N,N, dimethyl stearamides, nonionic amine polyglycol condensates, and nonionic ethoxylated alcohols, and mixtures thereof.
Claim 2
Independent Claim
106 words
A method for controlling Asiatic clams which are present in waters which comprises treating these waters with a composition comprising the combination of chlorine solution and a bromide salt capable of releasing bromide ions to the chlorine solution, and from about 1 up to about 10 percent by weight of a water-soluble biodispersant chosen from the group consisting of ethylene oxide condensates with propylene oxide adducts or propylene glycol having an HLB between 4-10 and a molecular weight between 1,000-5,000, nonionic polyethoxylated straight chain alcohols, tris cyanoethylated cocodiamines, polyoxyethylene sorbitan ester/acids, nonionic N,N, dimethyl stearamides, nonionic amine polyglycol condensates, and nonionic ethoxylated alcohols, and mixtures thereof.
Claim 3
Dependent Claim
24 words
The method of claim 1 where the proportion of bromide salt to chlorine, as hypochlorous acid, is from about 0.25 to about 1.5 equivalents.
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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |