Patent US3923490A successfully refreshed from Google Patents.
US3923490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of 1,2-dihydro-pyridine-N-phosphonates and thiophosphonates as microbiocides
Assignee: Baker Petrolite LLC
•
Filing: 1974-03-19
•
Granted: 1975-12-02
•
Expires: 1994-03-19
Abstract
Abstract WHERE N-C represents a dihydro-nitrogen ring, R is a substituted group, preferably hydrocarbon, X is O or S, and R1 is an alcohol or phenolic moiety, preferably hydrocarbon are used as microbiocides. Dihydro-nitrogen heterocyclic phosphoramidates of the general formula
Inventors
- 👤 Derek Redmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:32
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/576; C07F9/58; C07F9/59; C07F9/6561; C09; C09K; C09K8/00; C09K8/60; C09K8/605; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/066; C02; C02F; C02F2103/00; C02F2103/02; C02F2103/023
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
37 words
A PROCESS FOR INHIBITING BACTERIAL, ALGAE, FUNGI AND PROTOZOA IN AQUEOUS OR PETROLEUM HYDROCARBON SYSTEMS WHICH COMPRISES ADDING TO SAID SYSTEM A SMALL BUT EFFECTIVE AMOUNT OF A MICROBIOCIDE WHICH IS A DIHYDRO-NITROGEN PHOSPHONATE OF THE FORMULA
Claim 2
Dependent Claim
37 words
A PROCESS FOR INHIBITING BACTERIAL, ALGAE, FUNGI AND PROTOZOA IN AQUEOUS OR PETROLEUM HYDROCARBON SYSTEMS WHICH COMPRISES ADDING TO SAID SYSTEM A SMALL BUT EFFECTIVE AMOUNT OF A MICROBIOCIDE WHICH IS A DIHYDRO-NITROGEN PHOSPHONATE OF THE FORMULA
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein N - C is
Claim 4
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 5
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 6
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 7
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 8
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 9
Dependent Claim
10 words
The process of claim 1 where N - C is
Claim 10
Dependent Claim
19 words
The process of claim 1 where the bacteria being inhibited are (1) sulfate reducing bacteria or (2) aerobic bacteria.
Claim 11
Dependent Claim
16 words
The process of claim 1 where the bacteria are sulfate reducing bacteria of the Desulfovibrio genus.
Claim 12
Dependent Claim
25 words
The process of claim 1 where the microbiocide is added to the system in a concentration of about 5 to about 10,000 parts per million.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |