Patent US3650962A successfully refreshed from Google Patents.
US3650962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing bleaching and cleansing agents containing poly-(n-acetic acid)-ethyleneimines
Assignee: Henkel AG and Co KGaA
•
Filing: 1969-12-01
•
Granted: 1972-03-21
•
Expires: 1989-12-01
Abstract
Abstract A WASHING, BLEACHING AND CLEANSING AGENT HAVING A CONTENT OF FROM 50% TO 99.9%, BY WEIGHT, OF CUSTOMARY COMPONENTS OF WASHING, BLEACHING AND CLEANSING AGENTS AND FROM 0.1% TO 50% TO 99.9%, BY WEIGHT, OF CUSTOMARY SELECTED FROM THE GROUP CONSISTING OF (1) BRANCHED POLY(N-ACETIC ACID)-POLYETHYLENEIMINES HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 2,000 TO 200,000 WHEREIN FROM ABOUT 50% TO 100% OF THE PRIMARY AND SECONDARY AMINE GROUPS IN THE POLYETHYLENEIMINE MOLECULE ARE CARBOXYMETHYLATED AND (2) THEIR ALKALI METAL, AMMONIUM AND ORGANIC AMMONIUM SALTS.
Inventors
- 👤 Achim Werdehausen
- 👤 Arnold Heins
- 👤 Manfred Dohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:48
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3723; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C11D3/38; C11D3/386; C11D3/39; C11D3/3902; C11D3/3937; C11D3/394
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |