US2755266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions of elastomers derived from isocyanate modified polyesters
Assignee: Bayer AG
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Filing: 1952-02-19
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Granted: 1956-07-17
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Expires: 1972-02-19
Abstract
No abstract record available.
Inventors
- 👤 Brenschede Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:34
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0847; C08G18/0852; C08G18/10; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08J2375/00; C08J2375/04; C08J2375/06; Y; Y10; Y10S; Y10S264/00; Y10S264/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A COMPOSITION OF MATTER WHICH COMPRISES A SOLUTION OF AN ELASTOMER PREPARED BY REACTING LINEAR POLYESTERS CONTAINING TERMINAL HYDROXYL GROUPS AND PREPARED FROM POLYCARBOXYLIC ACIDS AND POLYHYDRIC ALCOHOLS WITH AN EXCESS OF DIISOCYANATE OVER THE TERMINAL HYDROXYL GROUPS OF THE POLYESTERS AND SUBSEQUENT REACTION TO THE RESULTING
Claim 2
Dependent Claim
47 words
A COMPOSITION OF MATTER WHICH COMPRISES A SOLUTION OF AN ELASTOMER PREPARED BY REACTING LINEAR POLYESTERS CONTAINING TERMINAL HYDROXYL GROUPS AND PREPARED FROM POLYCARBOXYLIC ACIDS AND POLYHYDRIC ALCOHOLS WITH AN EXCESS OF DIISOCYANATE OVER THE TERMINAL HYDROXYL GROUPS OF THE POLYESTERS AND SUBSEQUENT REACTION TO THE RESULTING
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |