Patent US2916510A successfully refreshed from Google Patents.
US2916510A
Expired / Lapsed
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Process for producing phosphinic acid phostones
Assignee: Monsanto Chemicals Ltd
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Filing: 1958-05-21
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Granted: 1959-12-08
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Expires: 1978-05-21
Abstract
No abstract record available.
Inventors
- 👤 Albert Y Garner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:08
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657163; C07F9/657172; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCES FOR THE PREPARATION OF PHOSTONES WHICH COMPRISES REACTING AN ORGANIC PHOSPHONITE WITH A DIHALOGENATED HYDROCARBON AT A TEMPERATURE OF FROM 100-250* C; SAID PHOSTONES CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
31 words
A PROCES FOR THE PREPARATION OF PHOSTONES WHICH COMPRISES REACTING AN ORGANIC PHOSPHONITE WITH A DIHALOGENATED HYDROCARBON AT A TEMPERATURE OF FROM 100-250* C; SAID PHOSTONES CORRESPONDING TO THE GENERAL FORMULA:
References Cited (Backward Citations)
US2648695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |