Patent US3821232A successfully refreshed from Google Patents.
US3821232A
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1,2-dihydro-pyridine-n-phosphonates and thiophosphonates
Assignee: Baker Petrolite LLC
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Filing: 1971-12-20
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Granted: 1974-06-28
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Expires: 1991-12-20
Abstract
Abstract Dihydro-nitrogen heterocyclic phosphoramidates of the general formula WHERE REPRESENTS A DIHYDRO-NITROGEN RING, R is a substituted group, preferably hydrocarbon, X is 0 or S, and R1 is an alcohol or phenolic moiety, preferably hydrocarbon; the preparation and uses thereof particularly as corrosion inhibitors, microbiocides, etc.
Inventors
- 👤 D Redmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:20
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/5532; C07F9/5535; C07F9/576; C07F9/58; C07F9/59; C07F9/6561; C09; C09K; C09K8/00; C09K8/54; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/066; C02; C02F; C02F2103/00; C02F2103/02; C02F2103/023
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
6 words
The compound of claim 1 where
Claim 2
Dependent Claim
6 words
The compound of claim 2 where
Claim 3
Dependent Claim
6 words
The compound of claim 1 where
Claim 4
Dependent Claim
6 words
The compound of claim 1 where
Claim 5
Dependent Claim
6 words
The compound of claim 1 where
Claim 6
Dependent Claim
6 words
The compound of claim 1 where
Claim 7
Dependent Claim
6 words
The compound of claim 1 where
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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |