US3451844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic active agent and a method for softening a washable textile fabric therewith
Assignee: Bayer AG
•
Filing: 1966-01-06
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Granted: 1969-06-24
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Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Helmut Kirschnek
- 👤 Mathieu Quaedvlieg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:58
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405; C; C11; C11D; C11D1/00; C11D1/38; C11D1/52; C11D1/528; C11D3/00; C11D3/0005; C11D3/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2243980A
Cited
US2205042A
Cited
US2496776A
Cited
US2734830A
Cited
US3038820A
Cited
US3168416A
Cited
US3095373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |