Patent US4925608A successfully refreshed from Google Patents.
Patent US2676962A successfully refreshed from Google Patents.
US2676962A
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US
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Morpholine amides of alkane phosphonic acids
Assignee: California Research LLC
•
Filing: 1951-11-10
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Granted: 1954-04-27
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Expires: 1971-11-10
Abstract
No abstract record available.
Inventors
- 👤 Allen H Lewis
- 👤 Richard D Stayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/44; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
AS NEW SURFACE-ACTIVE COMPOUNDS SUITABLE AS WETTING AGENTS, DIMORPHOLINE AMIDES OF AN ALKANE PHOSPHONIC ACID IN WHICH THE ALKANE SUBSTITUENT ATTACHED TO THE PHOSPHORUS ATOM IS AN ALKYL RADICAL CONTAINING FROM 10 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
36 words
AS NEW SURFACE-ACTIVE COMPOUNDS SUITABLE AS WETTING AGENTS, DIMORPHOLINE AMIDES OF AN ALKANE PHOSPHONIC ACID IN WHICH THE ALKANE SUBSTITUENT ATTACHED TO THE PHOSPHORUS ATOM IS AN ALKYL RADICAL CONTAINING FROM 10 TO 20 CARBON ATOMS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |