US3342909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of trialkyl phosphates from dialkyl phosponates
Assignee: Union Oil Company of California
•
Filing: 1964-10-26
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Granted: 1967-09-19
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Donald M Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
THE OXIDATION OF DIALKYL PHOSPHONATES HAVING THE FOLLOWING STRUCTURE:
Claim 2
Dependent Claim
9 words
THE OXIDATION OF DIALKYL PHOSPHONATES HAVING THE FOLLOWING STRUCTURE:
References Cited (Backward Citations)
US2952699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |