US2726219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkylene ether glycol-arylene diisocyanate elastomer sponge and process for preparing same
Assignee: EIDP Inc
•
Filing: 1951-08-24
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Granted: 1955-12-06
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Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick B Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:46
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/089; C08G18/10; C08G18/16; C08G18/166; C08G18/168; C08G18/18; C08G18/1875; C08G18/28; C08G18/30; C08G18/302; C08G18/40; C08G18/48; C08G18/4825; C08G18/4833; C08G2110/00; C08G2110/0008; C08G2110/0083; C08J2375/00; C08J2375/04; C08J2375/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
AN ELASTOMERIC SPONGE MATERIAL OBTAINED BY REACTING FROM 100 TO 600 PARTS BY WEIGHT OF WATER WITH 100 PARTS BY WEIGHT OF THE REACTION PRODUCT OF A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM 750 TO 6000 AND A MOLAR EXCESS OF AN ARYLENE DIISOCYANATE.
Claim 2
Dependent Claim
47 words
AN ELASTOMERIC SPONGE MATERIAL OBTAINED BY REACTING FROM 100 TO 600 PARTS BY WEIGHT OF WATER WITH 100 PARTS BY WEIGHT OF THE REACTION PRODUCT OF A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF FROM 750 TO 6000 AND A MOLAR EXCESS OF AN ARYLENE DIISOCYANATE.
References Cited (Backward Citations)
US2284896A
Cited
US2597025A
Cited
US2577279A
Cited
US2531392A
Cited
US2602783A
Cited
US2621166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |