Patent US2801604A successfully refreshed from Google Patents.
US2801604A
Expired / Lapsed
US
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Processed drawn implement
Assignee: National Glaco Chemical Corp
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Filing: 1951-01-03
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Granted: 1957-08-06
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Expires: 1971-01-03
Abstract
No abstract record available.
Inventors
- 👤 John J Russell
- 👤 William A Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:03
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12583; Y10T428/1259; Y10T428/12708; Y10T428/12722
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF FABRICATING A TINNED CONSISTING OF A BASE METAL HAVING A TIN OR ALLOY LAYER DESPOSITED THEREON INTO A PROCESSED DRAWN TINNED ARTICLE COMPRISING THE STEPS OF CHEMICALLY TREADING THE TIN LAYER SO AS TO PARTIALLY CONVERT A PORTION OF THE TIN LAYER INTO AN OXIDE OF TIN COATING, COATING A PORTION OF SAID OXIDE OF TIN COATING WITH A DRAWING LUBRICANT AND THEN SUBJECTING THE TREATED TINNED BLANK TO A DRAWING OPERATION WHEREBY THE METALLIC TIN LAYER IS SUBSTANTIALLY INTACT BETWEEN SAID BASE METTAL AND SAID OXIDE OF TIN COATING.
Claim 2
Independent Claim
93 words
A METHOD OF FABRICATING A TINNED CONSISTING OF A BASE METAL HAVING A TIN OR ALLOY LAYER DESPOSITED THEREON INTO A PROCESSED DRAWN TINNED ARTICLE COMPRISING THE STEPS OF CHEMICALLY TREADING THE TIN LAYER SO AS TO PARTIALLY CONVERT A PORTION OF THE TIN LAYER INTO AN OXIDE OF TIN COATING, COATING A PORTION OF SAID OXIDE OF TIN COATING WITH A DRAWING LUBRICANT AND THEN SUBJECTING THE TREATED TINNED BLANK TO A DRAWING OPERATION WHEREBY THE METALLIC TIN LAYER IS SUBSTANTIALLY INTACT BETWEEN SAID BASE METTAL AND SAID OXIDE OF TIN COATING.
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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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |