US2900408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid esters of acyl-phosphorous acids and method of making the same
Assignee: Henkel AG and Co KGaA
•
Filing: 1957-05-07
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Granted: 1959-08-18
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Expires: 1977-05-07
Abstract
No abstract record available.
Inventors
- 👤 Blaser Bruno
- 👤 Kaiser Wilhelm Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:51
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4062; C07F9/4065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
ACID ESTERS OF ACYL-PHOSPHOROUS ACIDS HAVING A STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
19 words
THE PROCESS OF PRODUCING ACID ESTERS OF ACYL-PHOSPHOROUS ACID HAVING A STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |