Patent US3012054A successfully refreshed from Google Patents.
US3012054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetraalkyl esters of diphosphonates
Assignee: Dow Chemical Co
•
Filing: 1960-03-18
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Granted: 1961-12-05
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Expires: 1980-03-18
Abstract
No abstract record available.
Inventors
- 👤 Rodney D Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:17
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4062; C07F9/4065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A PHOSPHONATE HAVING THE STRUCTURE
Claim 2
Dependent Claim
5 words
A PHOSPHONATE HAVING THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |