US2882260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked polymers of ethylenically unsaturated blocked isocyanates
Assignee: Bayer AG
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Filing: 1955-12-15
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Granted: 1959-04-14
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Expires: 1975-12-15
Abstract
No abstract record available.
Inventors
- 👤 Barti Herbert
- 👤 Holtschmidt Hans
- 👤 Bayer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:07
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/728
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
A METHOD FOR MAKING HIGH MOLECULAR WEIGHT POLYMERS WHICH COMPRISES POLYMERIZING AT A TEMPERATURE BELOW 100* C. AND IN THE PRESENCE OF A FREE RADICAL CATALYST A COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
US2647884A
Cited
US2718516A
Cited
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 |