Patent US3020303A successfully refreshed from Google Patents.
US3020303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aliphatic phosphate esters
Assignee: FMC Corp
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Filing: 1960-03-25
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Granted: 1962-02-06
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 John A Pianfetti
- 👤 Paul L Janey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
THE PROCESS OF PREPARING A PHOSPHATE ESTER COMPRISING THE STEPS OF (A) REACTING A MIXTURE CONTAINING AN ALKALI METAL HYDROXIDE WITH AN ALIPHATIC ALCOHOL HAVING THE FORMULA
References Cited (Backward Citations)
CA522732A
Cited
US2575225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |