US3274021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stannate coating bath and method of coating aluminum with tin
Assignee: M&T Chemicals Inc
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Filing: 1962-04-27
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Granted: 1966-09-20
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jan C Jongkind
- 👤 Peter G Kenedi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:20
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF TREATING ALUMINUM BY IMMERSION PLATING TO FORM A SURFACE LAYER OF TIN THEREON WHICH COMPRISES IMMERSING SAID ALUMINUM IN AN AQUEOUS BATH CONTAINING WATER, AN ANION OF A POLYHYDROXY CARBOXYLIC ACID IN AMOUNT OF 0.01-0.25 MOLE PER LITER CALCULATED AS SALT, AND A STANNATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM STANNATE AND POTASSIUM STANNATE; MAINTAINING SAID ALUMINUM IN SAID BATH FOR TIME SUFFICIENT TO DEPOSIT A SURFACE LAYER OF TIN THEREON; AND WITHDRAWING SAID ALUMINUM FROM SAID BATH.
Claim 2
Independent Claim
83 words
THE METHOD OF TREATING ALUMINUM BY IMMERSION PLATING TO FORM A SURFACE LAYER OF TIN THEREON WHICH COMPRISES IMMERSING SAID ALUMINUM IN AN AQUEOUS BATH CONTAINING WATER, AN ANION OF A POLYHYDROXY CARBOXYLIC ACID IN AMOUNT OF 0.01-0.25 MOLE PER LITER CALCULATED AS SALT, AND A STANNATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM STANNATE AND POTASSIUM STANNATE; MAINTAINING SAID ALUMINUM IN SAID BATH FOR TIME SUFFICIENT TO DEPOSIT A SURFACE LAYER OF TIN THEREON; AND WITHDRAWING SAID ALUMINUM FROM SAID BATH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |