US3205269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of ethers with phosphorous compounds
Assignee: GE Chemicals Inc
•
Filing: 1960-05-10
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Granted: 1965-09-07
•
Expires: 1980-05-10
Abstract
No abstract record available.
Inventors
- 👤 Friedman Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/527; C07; C07C; C07C41/00; C07C41/01; C07C41/34; C07C41/46; C08G; C08G18/00; C08G18/06; C08G18/28; C08K5/5398
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN ETHER OF THE GROUP CONSISTING OF (1) POLYALKYLENE GLYCOLS HAVING A MOLECULAR WEIGHT UP TO 10,000 WHEREIN THE ALKYLENE GROUPS HAVE 2 TO 4 CARBON ATOMS, (2) MONO AND DIALKYL ETHERS OF POLYETHYLENE GLYCOL HAVING MOLECULAR WEIGHTS UP TO 10,000 WHEREIN THE ALKYL GROUPS HAVE 1 TO 4 CARBON ATOMS, AND (3) ADDUCTS OF AN UNSUBSTITUTED SATURATED ALIPHATIC POLYHUDRIC ALCOHOL HAVING 3 TO 6 HYDROXYL GROUPS AND 3 TO 6 CARBON ATOMS WITH A 2 TO 4 CARBON ATOM ALKYLENE OXIDE HAVING A MOLECULAR WEIGHT UP TO 4000 STABILIZED WITH A PHOSPHORUS COMPOUND OF THE GROUP CONSISTING OF THE COMPOUNDS HAVING THE FORMULAE
Claim 2
Dependent Claim
104 words
AN ETHER OF THE GROUP CONSISTING OF (1) POLYALKYLENE GLYCOLS HAVING A MOLECULAR WEIGHT UP TO 10,000 WHEREIN THE ALKYLENE GROUPS HAVE 2 TO 4 CARBON ATOMS, (2) MONO AND DIALKYL ETHERS OF POLYETHYLENE GLYCOL HAVING MOLECULAR WEIGHTS UP TO 10,000 WHEREIN THE ALKYL GROUPS HAVE 1 TO 4 CARBON ATOMS, AND (3) ADDUCTS OF AN UNSUBSTITUTED SATURATED ALIPHATIC POLYHUDRIC ALCOHOL HAVING 3 TO 6 HYDROXYL GROUPS AND 3 TO 6 CARBON ATOMS WITH A 2 TO 4 CARBON ATOM ALKYLENE OXIDE HAVING A MOLECULAR WEIGHT UP TO 4000 STABILIZED WITH A PHOSPHORUS COMPOUND OF THE GROUP CONSISTING OF THE COMPOUNDS HAVING THE FORMULAE
References Cited (Backward Citations)
US2641614A
Cited
US2321307A
Cited
US2315544A
Cited
US2796401A
Cited
US2938877A
Cited
US2816876A
Cited
US2839563A
Cited
US2834798A
Cited
US2961454A
Cited
US3074967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |