Patent US3035019A successfully refreshed from Google Patents.
US3035019A
Expired / Lapsed
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Chelate polymers from tetraketones
Assignee: Union Carbide Corp
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Filing: 1959-03-30
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Granted: 1962-05-15
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Rudolph W Kluiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:37
CPC Classifications
C; C08; C08G; C08G79/00; C07; C07C; C07C45/00; C07C45/45; C07C45/455; C07C45/77; C07C49/00; C07C49/04; C07C49/12; C07C49/92; C07F; C07F3/00; C07F3/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A PROCESS FOR PREPARING A HIGH MOLECULAR WEIGHT CHELATE POLYMER WHICH COMPRISES REACTING A BIS(B-DICARBONYL)R COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
20 words
A PROCESS FOR PREPARING A HIGH MOLECULAR WEIGHT CHELATE POLYMER WHICH COMPRISES REACTING A BIS(B-DICARBONYL)R COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2659711A
Cited
US2765284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |