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US3459716A
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Polyalkylene glycol ester-unsaturated acid-methylalamide terpolymers
Assignee: BASF Schweiz AG
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Filing: 1968-04-16
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Granted: 1969-08-05
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Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Paul Schaefer
- 👤 Fritz Mayer
- 👤 Arthur Maeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/062; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/285; C08F220/286; C08F299/00; C08F299/02; C08F299/022; C08F299/024; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; D06M15/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2892820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |