US2500915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing ferrous sheet for manufacturing receptacles
Assignee: Parker Rust Proof Co
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Filing: 1942-10-17
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Granted: 1950-03-14
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Expires: 1962-10-17
Abstract
No abstract record available.
Inventors
- 👤 Robert R Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:39
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12708; Y10T428/12722
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
THE METHOD OF PREPARING A FERROUS SHEET FOR FORMATION INTO A SOLDERED RECEPTACLE WHICH COMPRISES APPLYING TO A FERROUS SHEET, METAL WHICH IS MORE READILY SOLDERABLE THAN THE FERROUS SURFACE ALONG PORTIONS WHICH ARE TO BE SOLDERED IN THE FORMATION OF THE RECEPTACLE, THEREAFTER TREATING THE ENTIRE SURFACE OF THE SHEET FOR NOT OVER 10 SECONDS WITH AN ACCELERATED PHOSPHATE SOLUTION, WHICH DOES NOT IMPAIR THE SOLDERABILITY OF SAID SOLDERABLE METAL WHILE IT FORMS ON THE PORTIONS OF THE SHEET NOT COVERED BY SAID SOLDERABLE METAL A UNIFORM, CONTINUOUS, ADHERENT, NON-DUSTING, PAINT-BONDING 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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |