Patent US1101767A successfully refreshed from Google Patents.
Patent US4462914A successfully refreshed from Google Patents.
US4462914A
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US
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Method of controlling Corbicula
Assignee: ECC SPECIALTY CHEMICALS Inc
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Filing: 1983-01-03
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Granted: 1984-07-31
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Expires: 2003-01-03
Abstract
Abstract A method of controlling Corbicula in aqueous systems comprising treating said systems with a cationic polymer. A preferred polymer is a poly (quaternary ammonium) compound having the recurring structure: [DMDAAX(-)] where DMDAAX(-) is a polymer unit resulting from monomeric dimethyldiallylammonium X(-); and X(-) is an anion; said polymer preferably having a weight average molecular weight of from about 200,000 to 400,000.
Inventors
- 👤 Alan L. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:20
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/12; C; C02; C02F; C02F1/00; C02F1/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
46 words
A method of controlling Corbicula in aqueous systems used for cooling or service water purposes, comprising adding to such a system a molluscicidally effective amount of poly(dimethyldiallyl ammonium chloride), wherein said poly(dimethyldiallyl ammonium chloride) has a weight average molecular weight of from about 200,000 to 400,000.
Claim 2
Independent Claim
46 words
A method of controlling Corbicula in aqueous systems used for cooling or service water purposes, comprising adding to such a system a molluscicidally effective amount of poly(dimethyldiallyl ammonium chloride), wherein said poly(dimethyldiallyl ammonium chloride) has a weight average molecular weight of from about 200,000 to 400,000.
Claim 3
Dependent Claim
16 words
The method of claim 1, wherein 1 to 200 ppm of poly(dimethyldiallyl ammonium chloride) is used.
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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |