US3009761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyquaternary ammonium compounds
Assignee: Bayer AG
•
Filing: 1958-01-16
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Granted: 1961-11-21
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Taube Carl
- 👤 Bockmann Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:56
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/02; D06P5/04; D06P5/06; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR IMPRIVING THE WET FASTNESS OF A CELLULOSIC DYED WITH A SUBSTANTIVE DYESTUFF WHICH COMPRISES APPLYING TO SAID DYED FIBER AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF A QUATERNARY POLYALKYLENE POLYAMINE OF THE FORMULA
Claim 2
Dependent Claim
35 words
A PROCESS FOR IMPRIVING THE WET FASTNESS OF A CELLULOSIC DYED WITH A SUBSTANTIVE DYESTUFF WHICH COMPRISES APPLYING TO SAID DYED FIBER AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF A QUATERNARY POLYALKYLENE POLYAMINE OF THE 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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |