US3121697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-amido-ethyl-phosphites, method of preparation, and blends thereof with phenolaldehyde resins
Assignee: La Bakelite
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Filing: 1959-10-26
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Granted: 1964-02-18
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Girard Jacques Georges Charles
- 👤 Quesnel Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/04; C08K; C08K5/00; C08K5/49; C08K5/5399; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR THE PREPARATION OF POLY-AMIDO-ETHYLPHOSPHITES COMPRISING THE STEP OF HEATING 2-HYDROXY-ETHYLAMINE WITH A PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHOSPHOROUS ACID, DIALKYL AND DIARYL PHOSPHITES AT A TEMPERATURE OF AT LEAST 80*C.
Claim 2
Dependent Claim
36 words
A PROCESS FOR THE PREPARATION OF POLY-AMIDO-ETHYLPHOSPHITES COMPRISING THE STEP OF HEATING 2-HYDROXY-ETHYLAMINE WITH A PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHOSPHOROUS ACID, DIALKYL AND DIARYL PHOSPHITES AT A TEMPERATURE OF AT LEAST 80*C.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |