US3053804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polymeric metal chelates from bis(acetoacetates) and bis(acetoacetamides)
Assignee: Eastman Kodak Co
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Filing: 1958-05-08
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Granted: 1962-09-11
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 C Martin James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:57
CPC Classifications
C; C08; C08G; C08G79/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR PREPARING A CHELATE CONDENSATION POLYMER WHICH COMPRISES REACTING (A) ONE MOLE PROPORTION OF A BIS (ACETOACETY) COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
25 words
A PROCESS FOR PREPARING A CHELATE CONDENSATION POLYMER WHICH COMPRISES REACTING (A) ONE MOLE PROPORTION OF A BIS (ACETOACETY) COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |