Patent US2853472A successfully refreshed from Google Patents.
US2853472A
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Polyurethane elastomers cured with dhsocyanates
Assignee: EIDP Inc
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Filing: 1955-02-14
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Granted: 1958-09-23
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Expires: 1975-02-14
Abstract
No abstract record available.
Inventors
- 👤 Herman E Schroeder
- 👤 John M Tinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:13
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818; C08G18/7825; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4825; C08G18/4854; C08G18/487; C08G18/67; C08G18/69; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08G18/7671; C08G18/771; C08G2380/00; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
THE PROCESS OF CURING A STABLE UNCURED POLYURETHANE ELASTOMERIC REACTION PRODUCT WHICH IS CURABLE BY HEATING WITH A POLYISOCYANATE AND WHICH CONTAINS SUBSTANTIALLY NO FREE ISOCYANATE GROUPS, SAID POLYURETHANE ELASTOMERIC REACTION PRODUCT CONTAINING A PLURALITY OF INTRALINEAR RADICALS OF THE FORMULA
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) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |