Patent US3732325A successfully refreshed from Google Patents.
US2882249A
Expired / Lapsed
US
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Organic materials prepared with the polyisocyanates and their preparation
Assignee: Stamford Rubber Supply Co
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Filing: 1955-01-28
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Granted: 1959-04-14
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Expires: 1975-01-28
Abstract
No abstract record available.
Inventors
- 👤 Karl W Posnansky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN ORGANIC PLASTIC MATERIAL WHICH IS THE REACTION PRODUCT OF AN ORGANIC POLYISOCYANATE HAVING A PLURALITY OF ISOCYANATE GROUPS PER MOLECULE AS ITS SOLE REACTIVE GROUPS, AND A NON-LINEAR POLYMER PAREPARED BY ESTERIFYING A MONOBASIC ALIPHATIC LONG CHAIN FREE FATTY ACID CONTAINING AN ALCOHOLIC HYDROXY GROUP SEPARATE FROM THE ACID GROUP, WITH A POLYEPOXY COMPOUND HAVING A PLURALITY F ESTERFIABLE 1,2-EPOXY GROUPS PER MOLECULE.
Claim 2
Dependent Claim
64 words
AN ORGANIC PLASTIC MATERIAL WHICH IS THE REACTION PRODUCT OF AN ORGANIC POLYISOCYANATE HAVING A PLURALITY OF ISOCYANATE GROUPS PER MOLECULE AS ITS SOLE REACTIVE GROUPS, AND A NON-LINEAR POLYMER PAREPARED BY ESTERIFYING A MONOBASIC ALIPHATIC LONG CHAIN FREE FATTY ACID CONTAINING AN ALCOHOLIC HYDROXY GROUP SEPARATE FROM THE ACID GROUP, WITH A POLYEPOXY COMPOUND HAVING A PLURALITY F ESTERFIABLE 1,2-EPOXY GROUPS PER MOLECULE.
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |