US2976169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion deposition of tin
Assignee: EIDP Inc
•
Filing: 1958-02-12
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Granted: 1961-03-21
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Michael A Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR MAKING A SELECTED AREA OF A STEEL SHEET AMENABLE TO SOLDERING, THE STEPS COMPRISING MECHANICALLY ROUGHENING SUCH AREA AND EFFECTING AN IMMERSION DEPOSITION OF TIN THEREUPON BY APPLYING THERETO AN AQUEOUS BATH CONSISTING ESSENTIALLY OF: PARTS BY WEIGHT WATER 2400 STANNOUE SULFATE 30$18 SULFAMIC ACID 270$50 POLYALKYLENE OXIDE HAVING A MOLECULAR WEIGHT BETWEEN 350 AND 20000 48$16
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR MAKING A SELECTED AREA OF A STEEL SHEET AMENABLE TO SOLDERING, THE STEPS COMPRISING MECHANICALLY ROUGHENING SUCH AREA AND EFFECTING AN IMMERSION DEPOSITION OF TIN THEREUPON BY APPLYING THERETO AN AQUEOUS BATH CONSISTING ESSENTIALLY OF: PARTS BY WEIGHT WATER 2400 STANNOUE SULFATE 30$18 SULFAMIC ACID 270$50 POLYALKYLENE OXIDE HAVING A MOLECULAR WEIGHT BETWEEN 350 AND 20000 48$16
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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |