US3287305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationactive dispersions of finely divided water-insoluble cationactive polymers containing quaternary ammonium groups
Assignee: BASF Schweiz AG
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Filing: 1963-01-07
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Granted: 1966-11-22
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Maeder Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:31
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; C07; C07D; C07D303/00; C07D303/02; C07D303/36; C08F22/00; C08F22/36; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
IN A STABLE AQUEOUS CATIONACTION DISPERSION, COPOLYMERIZATION PRODUCT OF
Claim 2
Dependent Claim
9 words
IN A STABLE AQUEOUS CATIONACTION DISPERSION, COPOLYMERIZATION PRODUCT OF
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |