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US2533455A
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Process for preparing linear condensation polymers from bis-diazodiketo alkanes
Assignee: Eastman Kodak Co
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Filing: 1947-09-10
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Granted: 1950-12-12
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Expires: 1967-09-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh J Hagemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:50
CPC Classifications
C; C08; C08G; C08G69/00; C08G67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR PREPARING A LINEAR CONDENSATION POLYMER COMPRISING CONDENSING A BISDIAZODIKETOALKANE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-PRIMARY AMINES AND HYDROXY PRIMARY AMINES.
Claim 2
Dependent Claim
27 words
A PROCESS FOR PREPARING A LINEAR CONDENSATION POLYMER COMPRISING CONDENSING A BISDIAZODIKETOALKANE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DI-PRIMARY AMINES AND HYDROXY PRIMARY AMINES.
References Cited (Backward Citations)
US2071250A
Cited
US2284896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |