Patent US3314899A successfully refreshed from Google Patents.
US3314899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric diazadiphosphetidine dioxides
Assignee: Monsanto Research Corp
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Filing: 1963-11-26
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Granted: 1967-04-18
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Leo P Parts
- 👤 Morris L Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A SOLID, CROSS-LINKED POLYMER CONSISTING ESSENTIALLY OF THE REPEATING UNIT
Claim 2
Dependent Claim
10 words
A SOLID, CROSS-LINKED POLYMER CONSISTING ESSENTIALLY OF THE REPEATING UNIT
Claim 3
Independent Claim
96 words
THE METHOD OF PREPARING A SOLID, CROSS-LINKED POLYMER WHICH COMPRISES HEATING AT FROM 300*C. TO 800*C. A 2,4-BIS(ARYLAMINO)-1,3-DIARYL-1,3,2,4-DIAZADIPHOSPHETIDINE-2,4-DIOXIDE WHEREIN ARYL IS MONOCYCLIC HYDROCARBON, HAS FROM 6 TO 12 CARBON ATOMS AND IS FREE OF OLEFINIC AND ACETYLENIC UNSATURATION AND IS LINKED THROUGH NUCLEAR CARBON TO THE REMAINDER OF THE MOLECULE, SAID HEATING BEING CONDUCTED WHILE REMOVING BY-PRODUCT ARYLAMINE FROM THE REACTION CHAMBER AND, WHEN THE HEATING IS CONDUCTED BELOW THE MELTING POINT OF SAID DIOXIDE, PROVIDING FOR SO RAPID A REMOVAL OF THE ARYLAMINE THAT CHEMICAL REACTION OF THE AMINE IN SAID CHAMBER IS SUBSTANTIALLY PREVENTED.
Claim 4
Independent Claim
96 words
THE METHOD OF PREPARING A SOLID, CROSS-LINKED POLYMER WHICH COMPRISES HEATING AT FROM 300*C. TO 800*C. A 2,4-BIS(ARYLAMINO)-1,3-DIARYL-1,3,2,4-DIAZADIPHOSPHETIDINE-2,4-DIOXIDE WHEREIN ARYL IS MONOCYCLIC HYDROCARBON, HAS FROM 6 TO 12 CARBON ATOMS AND IS FREE OF OLEFINIC AND ACETYLENIC UNSATURATION AND IS LINKED THROUGH NUCLEAR CARBON TO THE REMAINDER OF THE MOLECULE, SAID HEATING BEING CONDUCTED WHILE REMOVING BY-PRODUCT ARYLAMINE FROM THE REACTION CHAMBER AND, WHEN THE HEATING IS CONDUCTED BELOW THE MELTING POINT OF SAID DIOXIDE, PROVIDING FOR SO RAPID A REMOVAL OF THE ARYLAMINE THAT CHEMICAL REACTION OF THE AMINE IN SAID CHAMBER IS SUBSTANTIALLY PREVENTED.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |