Patent US3832309A successfully refreshed from Google Patents.
US3832309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent formulations
Assignee: Ethyl Corp
•
Filing: 1972-08-07
•
Granted: 1974-08-27
•
Expires: 1992-08-07
Abstract
Abstract TO ASSIST IN ABVIATING EUTROPHICATION OF WATER, DETERGENT BUILDER SYSTEMS BASED ON THE COMBINATION DETERGENT AND NITRILOTRIACETATES ARE USED. CONVENTIONAL DETERGENT ACTIVES MAY BE USED WITH THESE BUILDER SYSTEMS.
Inventors
- 👤 W Foster
- 👤 P Kobetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:24
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/33; C11D3/20; C11D3/2075; C11D3/2086
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |