US2984680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing diphenyl phosphites
Assignee: Victor Chemical Works
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Filing: 1956-04-30
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Granted: 1961-05-16
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Edward N Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:20
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A METHOD FOR PRODUCING DIPHENYL PHOSPHITES WHICH COMPRISES REACTING TRIPHENYL PHOSPHITE AND PHOSPHOROUS ACID BELOW DECOMPOSITION TEMPERATURES.
Claim 2
Independent Claim
17 words
A METHOD FOR PRODUCING DIPHENYL PHOSPHITES WHICH COMPRISES REACTING TRIPHENYL PHOSPHITE AND PHOSPHOROUS ACID BELOW DECOMPOSITION TEMPERATURES.
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |