Patent US3056824A successfully refreshed from Google Patents.
US3056824A
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Transesterification process for producing nonsymmetrical phosphite triesters and products resulting therefrom
Assignee: Argus Chemical Corp
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Filing: 1956-07-13
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Granted: 1962-10-02
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Expires: 1976-07-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Hecker
- 👤 Olga H Knoepke
- 👤 William E Leistner
- 👤 Mark W Poilock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:33
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; C07F9/06; C07F9/08; C07F9/141; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/527
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A PROCESS OF PREPARING THE CYCLIC PHOSPHITE
Claim 2
Independent Claim
46 words
A METHOD OF PREPARING A PHOSPHITE HAVING AT LEAST ONE ALIPHATIC SUBSTITUENT COMPRISING REACTING A TRIARYL PHOSPHITE WITH AT LEAST ONE BUT LESS THAN THREE MOLES PER MOLE OF PHOSPHITE OF A SATURATED ALIPHATIC ALCOHOL UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF A ALKALINE CATALYST.
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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |