US3515776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed esters of phosphonic acid and preparation
Assignee: GE Chemicals Inc
•
Filing: 1967-10-23
•
Granted: 1970-06-02
•
Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 Charles F Baranauckas
- 👤 Irving Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/388; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657163; C07F9/657181; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5357
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2841608A
Cited
US3075928A
Cited
US3075927A
Cited
US3092651A
Cited
US3139450A
Cited
US3205250A
Cited
US3210398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |