US3313747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers prepared from isocyanateoxazolidinones
Assignee: Avantor Performance Materials LLC
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Filing: 1964-10-29
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Granted: 1967-04-11
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Schramm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/003; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/28; C08G18/40; C08G18/58; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS FOR PREPARING A FOAMED POLYMER WHICH COMPRISES MIXING: (A) WATER; WITH (B) A LIQUID POLYMERIZABLE COMPOSITIN OF A 2-OXAZOLIDINONE HAVING AT LEAST TWO SUBSTITUTED 2-OXAZOLIDINONE GROUPS AND AT LEAST TWO ISOCYANATE GROUPS HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
A FOAMED POLYMER PREPARED BY THE PROCESS OF CLAIM 6.
References Cited (Backward Citations)
US3020262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |