US3734860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning compositions
Assignee: Hooker Chemical Corp
•
Filing: 1969-11-17
•
Granted: 1973-05-22
•
Expires: 1989-11-17
Abstract
Abstract BASIC MATERIALS SUCH AS SODIUM OR POTASSIUM HYDROXIDE ARE SUSPENDED UNIFORMLY IN A LIQUID HYDROCARBON SUCH AS PERCHLOROETHYLENE BY THE ADDITION THERETO OF A SUSPENSION AGENT SELECTED FROM CARBOXYLIC ACIDS CONTAINING FROM 8 TO 22 CARBON ATOMS, OR METAL SALTS OR ESTERS THEREOF. IN COMBINATION WITH A WATER-ACTIVE METAL SUCH AS ALUMINUM, SUCH COMPOSITIONS FIND UTILITY AS DRAIN CLEANERS.
Inventors
- 👤 J Bowen
- 👤 T Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:03
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D7/50; C11D7/5004; C11D7/5018
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |