US3576751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain cleaner
Assignee: Beatrice Companies Inc
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Filing: 1968-05-10
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Granted: 1971-04-27
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Expires: 1988-05-10
Abstract
Abstract A DRAIN CLEANER COMPOSITION IS PREPARD CONTAINING FINELY DIVIDED SODIUM HYDROXIDE IN A CHLORINATED HYDROCARBON SOLVENT, PREFERABLY 1,1,1-TRICHLOROETHANE, OR NMETHYL-2-PYRROLIDONE. PREFERABLY, POWDERED ALUMINUM IS INCLUDED. A HYDROCARBON DILUENT CAN BE ADDED AND SILICA CAN BE ADDED AS A THICKNER TO GET THE REQUISITE BODY AND RETARD SLUDGE FORMATION.
Inventors
- 👤 Peter P Noznick
- 👤 George C Kyros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C11D7/50; C11D7/5004; C11D7/5013; C11D7/22; C11D7/24; C11D7/28; C11D7/32
Claims Analysis
Total Claims: 0
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |