US3064030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing vinyl and substituted vinyl phosphonates by dehydro-halogenation
Assignee: Monsanto Chemicals Ltd
•
Filing: 1958-06-18
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Granted: 1962-11-13
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Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 David H Chadwick
- 👤 Charles H Campbell
- 👤 Sidney H Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:38
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4015; C10; C10M; C10M1/00; C10M1/08; C10M2223/00; C10M2223/06; C10M2223/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
IN A METHOD OF DEHYDROHALOGENATING A B - HALOALKYL PHOSPHONATE TO FORM THE CORRESPONDING VINYL PHOSPHONATE, THE STEPS COMPRISING REACTING A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
25 words
IN A METHOD OF DEHYDROHALOGENATING A B - HALOALKYL PHOSPHONATE TO FORM THE CORRESPONDING VINYL PHOSPHONATE, THE STEPS COMPRISING REACTING A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
US2389576A
Cited
US2557805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |