US3506576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cleaning solution of chelating agent and water-soluble sulfide
Assignee: Dow Chemical Co
•
Filing: 1967-06-20
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Granted: 1970-04-14
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Expires: 1987-06-20
Abstract
No abstract record available.
Inventors
- 👤 Fred N Teumac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:31
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/19; C11; C11D; C11D3/00; C11D3/0005; C11D3/0042; C11D3/16; C11D3/26; C11D3/33; C11D7/00; C11D7/02; C11D7/22; C11D7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3447965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |