Patent US2819247A successfully refreshed from Google Patents.
US2819247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant polyester resinous compositions containing combined halogens and phosporus and process of preparation
Assignee: Wyeth Holdings LLC
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Filing: 1953-06-10
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Granted: 1958-01-07
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Expires: 1973-06-10
Abstract
No abstract record available.
Inventors
- 👤 Lennart A Lundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:11
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/692; C08G63/6924; C08G63/6928; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A CLEAR, FLAME-RESISTANT, SELF-EXTINGUISHING RESINOUS COMPOSITION COMPRISING THE REACTION PRODUCT OF (1) A POLYMERIZABLE ETHYLENICALLY UNSATURATED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID-ALKYL PHOSPHATE POLYESTER OBTAINED AS THE REACTION PRODUCT OF A POLYHYDRIC ALCOHOL AND AN ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID WHEREIN SAID POLYESTER CONTAINS COMBINED HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE AND MIXTURES THEREOF IN AN AMOUNT TO YIELD FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF SAID PRODUCT AND AN ALKYL PHOSPHATE WHERIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS AND IS PRESENT IN AN AMOUNT TO YIELD FROM ABOUT 0.1% TO ABOUT 5% BY WEIGHT OF SAID PRODUCT AND (2) A COMPOUND CONTAINING A POLYMERIZABLE CH2< GROUP AND HAVING A BOILING POINT OF AT LEAST 60* C.
Claim 2
Dependent Claim
124 words
A CLEAR, FLAME-RESISTANT, SELF-EXTINGUISHING RESINOUS COMPOSITION COMPRISING THE REACTION PRODUCT OF (1) A POLYMERIZABLE ETHYLENICALLY UNSATURATED POLYHYDRIC ALCOHOL-POLYCARBOXYLIC ACID-ALKYL PHOSPHATE POLYESTER OBTAINED AS THE REACTION PRODUCT OF A POLYHYDRIC ALCOHOL AND AN ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID WHEREIN SAID POLYESTER CONTAINS COMBINED HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE AND MIXTURES THEREOF IN AN AMOUNT TO YIELD FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF SAID PRODUCT AND AN ALKYL PHOSPHATE WHERIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS AND IS PRESENT IN AN AMOUNT TO YIELD FROM ABOUT 0.1% TO ABOUT 5% BY WEIGHT OF SAID PRODUCT AND (2) A COMPOUND CONTAINING A POLYMERIZABLE CH2< GROUP AND HAVING A BOILING POINT OF AT LEAST 60* C.
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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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |