Patent US3585210A successfully refreshed from Google Patents.
US3585210A
Expired / Lapsed
US
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Phosphate esters of cyclic amidines
Assignee: Baker Petrolite LLC
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Filing: 1967-09-11
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Granted: 1971-06-15
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Expires: 1987-09-11
Abstract
Abstract ESTERS OF CYCLIC AMIDINES AND PHOSPHORIC ACIDS, INCLUDING OXYGEN, SULFUR AND OXYGEN AND SULFUR-CONTAINING PHOSPHORIC ACIDS, AS ILLUSTRATED BY ESTERS OF THE FORMULA (A)N(-X-P(=X)-(X(-R''))(3-N))M WHERE $ IS A CYCLIC AMIDINE-CONTAINING RADICAL, FOR EXAMPLE, IMIDAZOLINE AND TETRAHYDROPYRIMIDINE, X IS OXYGEN AND/OR SULFUR; R'' (WHICH MAY BE THE SAME OR DIFFERENT) IS HYDROGEN OR AN ALCOHOL MOIETY; N IS 1-3, AND M IS A NUMBER DETERMINED BY THE NUMBER OF HYDROXY GROUPS ON THE CYCLIC AMIDINE. THESE COMPOUNDS, AMONG OTHER USES, ARE EMPLOYED AS CORROSION INHIBITORS.
Inventors
- 👤 Derek Redmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:18
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6558; C07F9/65583; C07F9/645; C07F9/6503; C07F9/6506; C07F9/6509; C07F9/6512; Y; Y10; Y10S; Y10S507/00; Y10S507/939
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |