US3087871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving acid tin plate quality
Assignee: Primerica Inc
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Filing: 1960-09-14
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Granted: 1963-04-30
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Expires: 1980-09-14
Abstract
No abstract record available.
Inventors
- 👤 Kamm Gilbert George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/48; C25D5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A METHOD OF FLOW BRIGHTENING MATTE FINISH TIN ELECTROLYTICALLY DEPOSITED FROM AN ACID PLATING SOLUTION ONTO A STEEL BASE, THE THREE STEPS COMPRISING (1) HEATING SAID TIN AT A PREDETERMINED RATE TO A TEMPERATURE OF FROM 400*F. TO 449*F. IN A TIME INTERVAL OF 1 TO 8 SECONDS, (2) HEATING SAID TIN AT A TEMPERATURE AND FOR A TIME REPRESENTED IN THE AREA ENCLOSED BY THE POINTS A, B, C, D, E, F, G, H, A OF FIG. 2 AT A RATE DIFFENENT FROM THE RATE OF STEP (1) TO PRODUCE AT LEAST A MULTITUDE OF TIN-IRON ALLOY NUCLEI BETWEEN SAID TIN AND BASE, AND (3) HEATING SAID SAID TIN AT A RATE DIFFERENT FROM THE RATE OF STEP (2) TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID TIN TO PRODUCE FLOW BRIGH-
Claim 2
Dependent Claim
135 words
IN A METHOD OF FLOW BRIGHTENING MATTE FINISH TIN ELECTROLYTICALLY DEPOSITED FROM AN ACID PLATING SOLUTION ONTO A STEEL BASE, THE THREE STEPS COMPRISING (1) HEATING SAID TIN AT A PREDETERMINED RATE TO A TEMPERATURE OF FROM 400*F. TO 449*F. IN A TIME INTERVAL OF 1 TO 8 SECONDS, (2) HEATING SAID TIN AT A TEMPERATURE AND FOR A TIME REPRESENTED IN THE AREA ENCLOSED BY THE POINTS A, B, C, D, E, F, G, H, A OF FIG. 2 AT A RATE DIFFENENT FROM THE RATE OF STEP (1) TO PRODUCE AT LEAST A MULTITUDE OF TIN-IRON ALLOY NUCLEI BETWEEN SAID TIN AND BASE, AND (3) HEATING SAID SAID TIN AT A RATE DIFFERENT FROM THE RATE OF STEP (2) TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID TIN TO PRODUCE FLOW BRIGH-
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |