US3553146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid drain cleaner
Assignee: Drackett Co
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Filing: 1968-01-25
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Granted: 1971-01-05
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Expires: 1988-01-25
Abstract
Abstract AN IMPROVED LIQUID DRAIN CLEANING COMPOSITION COMPRISING A CHLORINATED HYDROCARBON SOLVENT, A SURFACANT, AND MINERAL OIL.
Inventors
- 👤 Charles John Butke
- 👤 Lawrence William Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:32
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02806; C11D1/00; C11D1/66; C11D1/72; C11D1/74; C11D1/78; C11D7/00; C11D7/22; C11D7/24; C11D7/28
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |