Patent US3287449A successfully refreshed from Google Patents.
US3287449A
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Preparation of aryl phosphites
Assignee: GE Chemicals Inc
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Filing: 1962-11-30
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Granted: 1966-11-22
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Charles F Baranauckas
- 👤 Gordon Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:18
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/46; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C07F9/146; C07F9/38; C07F9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR PREPARING A TRIARYL PHOSPHITE, WHEREIN THE ARYL RADICALS ARE THE SAME, WHICH COMPRISES HEATING A PHENOL HAVING FROM 6 TO 18 CARBON ATOMS TO A TEMPERATURE FROM ABOUT 75 DEGREES BELOW THE BOILING POINT TO THE BOILING POINT OF SAID PHENOL, PASSING SAID PHENOL AND A TRIVALENT PHOSPHORUS CHLORIDE HAVING THE FORMULA
Claim 2
Dependent Claim
55 words
A PROCESS FOR PREPARING A TRIARYL PHOSPHITE, WHEREIN THE ARYL RADICALS ARE THE SAME, WHICH COMPRISES HEATING A PHENOL HAVING FROM 6 TO 18 CARBON ATOMS TO A TEMPERATURE FROM ABOUT 75 DEGREES BELOW THE BOILING POINT TO THE BOILING POINT OF SAID PHENOL, PASSING SAID PHENOL AND A TRIVALENT PHOSPHORUS CHLORIDE HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |