US3792084A
Expired / Lapsed
US
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Polyquaternary ammonium methylene phosphonates and uses thereof
Assignee: Baker Petrolite LLC
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Filing: 1972-03-24
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Granted: 1974-02-12
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Expires: 1992-03-24
Abstract
Abstract POLYQUATERNARY AMMONIUM METHYLENE PHOSPHONATES AND USES THEREOF, PARTICULARLY AS SCALE INHIBITORS, CHELATING AGENTS, BACTERICIDES, ETC.
Inventors
- 👤 P Quinlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:09
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3895; A; A01; A01N; A01N57/00; A01N57/18; C02; C02F; C02F1/00; C02F1/50; C02F5/00; C02F5/08; C02F5/10; C02F5/14; C07F9/3804; C07F9/3808; C07F9/3817
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |