US3345295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper cleaning compositions
Assignee: Shulton Inc
•
Filing: 1966-03-03
•
Granted: 1967-10-03
•
Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Schwarcz Morton
- 👤 Barchas Myron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D17/00; C11D17/0043; C11D17/04; C11D17/049; C11D3/16; C11D3/34; C11D3/3427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A SUBSTANTIALLY OXYBORON FREE AQUEOUS COPPER CLEANING COMPOSITION CONTAINING AS ESSENTIAL INGREDIENTS; (1) FROM ABOUT 5% TO THE SOLUBILITY LIMIT OF A THIOSULFATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL THIOSULFATES AND AMMONIUM THIOSULFATE AND (2) FROM ABOUT 0.1% TO ABOUT 10% OF AN N-ALKYL MERCAPTAN CONTAINING FROM 12 TO 22 CARBON ATOMS; ALL PERCENTAGES BEING BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
68 words
A SUBSTANTIALLY OXYBORON FREE AQUEOUS COPPER CLEANING COMPOSITION CONTAINING AS ESSENTIAL INGREDIENTS; (1) FROM ABOUT 5% TO THE SOLUBILITY LIMIT OF A THIOSULFATE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL THIOSULFATES AND AMMONIUM THIOSULFATE AND (2) FROM ABOUT 0.1% TO ABOUT 10% OF AN N-ALKYL MERCAPTAN CONTAINING FROM 12 TO 22 CARBON ATOMS; ALL PERCENTAGES BEING BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |