US3142615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling algae with alkylguanidine salts
Assignee: Wyeth Holdings LLC
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Filing: 1961-11-24
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Granted: 1964-07-28
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Wehner Donald Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:44
CPC Classifications
A; A01; A01N; A01N47/00; A01N47/40; A01N47/42; A01N47/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD OF INHIBITING THE GROWTH OF ALGAE IN AQUEOUS MEDIA WHICH COMPRISES CONTACTING SAID ALGAE WITH A MINOR BUT EFFECTIVE AMOUNT OF AN ANTIALGAL AGENT COMPRISING AN ALKYLGUANIDINE SALT HAVING THE STRUCTURAL FORMULA:
Claim 2
Independent Claim
34 words
A METHOD OF INHIBITING THE GROWTH OF ALGAE IN AQUEOUS MEDIA WHICH COMPRISES CONTACTING SAID ALGAE WITH A MINOR BUT EFFECTIVE AMOUNT OF AN ANTIALGAL AGENT COMPRISING AN ALKYLGUANIDINE SALT HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2906595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |