Patent US2852549A successfully refreshed from Google Patents.
US2852549A
Expired / Lapsed
US
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Preparation of neutral mixed phosphates by interaction of phosphates
Assignee: Eastman Kodak Co
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Filing: 1956-02-14
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Granted: 1958-09-16
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Expires: 1976-02-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Richard L Mcconnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:28
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE PROCESS OF PREPARING NEUTRAL MIXED PHOSPHATES CONTAINING THREE ORGANIC RADICALS, EACH OF SAID RADICALS BEING SELECTED FROM THE FIRST GROUP CONSISTING OF ALKYL, CONTAINING UP TO 8 CARBON ATOMS, HALOALKYL CONTAINING UP TO 8 CARBON ATOMS, PHENYL AND CRESYL, TWO OF SAID RADICALS BEING IDENTICAL AND AT LEAST ONE OF SAID RADICALS BEING AN ALKYL RADICAL CONTAINING UP TO 8 CARBON ATOMS, WHICH COMPRISES REACTING A PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF TRIALKYL PHOSPHATES AND TRIALKYL THIOPHOSPHATES WHEREIN THE ALKYL RADICAL WITH A DIFFERENT TO 8 CARBON ATOMS PER ALKYL RADICAL WITH A DIFFERENT PHOSPHATE HAVING THE STRUCTURAL FORMULA (RX)3P=X WHEREIN R IS SELECTED FROMTHE FIRST GROUP SET FORTH ABOVE AND X IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AT A TEMPERATURE OF 150 TO 300*C.
Claim 2
Dependent Claim
131 words
THE PROCESS OF PREPARING NEUTRAL MIXED PHOSPHATES CONTAINING THREE ORGANIC RADICALS, EACH OF SAID RADICALS BEING SELECTED FROM THE FIRST GROUP CONSISTING OF ALKYL, CONTAINING UP TO 8 CARBON ATOMS, HALOALKYL CONTAINING UP TO 8 CARBON ATOMS, PHENYL AND CRESYL, TWO OF SAID RADICALS BEING IDENTICAL AND AT LEAST ONE OF SAID RADICALS BEING AN ALKYL RADICAL CONTAINING UP TO 8 CARBON ATOMS, WHICH COMPRISES REACTING A PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF TRIALKYL PHOSPHATES AND TRIALKYL THIOPHOSPHATES WHEREIN THE ALKYL RADICAL WITH A DIFFERENT TO 8 CARBON ATOMS PER ALKYL RADICAL WITH A DIFFERENT PHOSPHATE HAVING THE STRUCTURAL FORMULA (RX)3P=X WHEREIN R IS SELECTED FROMTHE FIRST GROUP SET FORTH ABOVE AND X IS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AT A TEMPERATURE OF 150 TO 300*C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |