Patent US3524846A successfully refreshed from Google Patents.
US3524846A
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Process for the didealkylation of phosphonate esters
Assignee: Roche Palo Alto LLC
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Filing: 1967-06-02
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Granted: 1970-08-18
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Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 John G Moffatt
- 👤 Gordon H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3826; C07H19/00; C07H19/02; C07H19/04; C07H19/06; C07H19/10; C07H19/16; C07H19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3054821A
Cited
US3235616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |