US2843586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 2-methyl-1, 3-oxazolidine-3-phosphonic acids and of 2-methyl-tetrahydro-1,3-oxazine-3-phosphonic acids, and their preparation
Assignee: Rohm and Haas Co
•
Filing: 1954-10-29
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Granted: 1958-07-15
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Melamed Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:51
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6527; C07F9/6533; C07F9/653; C07F9/6564; C07F9/6571; C07F9/657154; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C10L1/2641; C10L1/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A COMPOSITION HAVING THE STRUCTURE OF THE FORMULA
Claim 2
Dependent Claim
8 words
A COMPOSITION HAVING THE STRUCTURE OF THE FORMULA
References Cited (Backward Citations)
US2027031A
Cited
US2418224A
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US2442582A
Cited
US2520150A
Cited
US2687389A
Cited
US2569428A
Cited
US2706194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |