Patent US2754318A successfully refreshed from Google Patents.
US2754318A
Expired / Lapsed
US
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Method of making mixed fluorinated phosphate esters and resulting new phosphates
Assignee: Douglas Aircraft Co Inc
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Filing: 1951-03-10
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Granted: 1956-07-10
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Expires: 1971-03-10
Abstract
No abstract record available.
Inventors
- 👤 James C Conly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:47
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A NEW CHEMICAL COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
8 words
A NEW CHEMICAL COMPOUND REPRESENTED BY THE FORMULA
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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |