US2957905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-phosphorus compounds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1958-08-11
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Granted: 1960-10-25
•
Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Van R Gaertner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:28
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/30; C07F9/32; C07F9/3205; C07F9/3211; C07F9/50; C07F9/53; C07F9/5304
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
THE METHOD WHICH COMPRISES HEATING ABOVE 50*C. AN ORGANOPHOSPHORUS ACID COMPOUND SELECTED FROM THE CLASS CONSISTING OF (RA)3P, (RA)2R1P AND (RA) (R1)2P WHEREIN R IS AN ALKYL RADICAL HAVING FROM 1 TO 12 CARBON ATOMS, R1 IS A HYDROCARBON RADICAL FREE OF NON-BENZENOID UNSATURATION HAVING FROM 1 TO 12 CARBON ATOMS AND A IS A CHALCOGEN ELEMENT SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, WITH AN ALKANE SULTONE SELECTED FROM THE CLASS CONSISTING OF Y AND $ SULTONES OF THE FORMULA
Claim 2
Independent Claim
83 words
THE METHOD WHICH COMPRISES HEATING ABOVE 50*C. AN ORGANOPHOSPHORUS ACID COMPOUND SELECTED FROM THE CLASS CONSISTING OF (RA)3P, (RA)2R1P AND (RA) (R1)2P WHEREIN R IS AN ALKYL RADICAL HAVING FROM 1 TO 12 CARBON ATOMS, R1 IS A HYDROCARBON RADICAL FREE OF NON-BENZENOID UNSATURATION HAVING FROM 1 TO 12 CARBON ATOMS AND A IS A CHALCOGEN ELEMENT SELECTED FROM THE CLASS CONSISTING OF OXYGEN AND SULFUR, WITH AN ALKANE SULTONE SELECTED FROM THE CLASS CONSISTING OF Y AND $ SULTONES OF THE FORMULA
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
GB938186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |