US2657458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining copper members
Assignee: RCA Corp
•
Filing: 1949-01-29
•
Granted: 1953-11-03
•
Expires: 1969-01-29
Abstract
No abstract record available.
Inventors
- 👤 Pessel Leopold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:50
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/268; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF JOINING TWO METALLIC MEMBERS CONSISTING ESSENTIALLY OF COPPER, AT LEAST ONE OF SAID MEMBERS HAVING A COVERING OF ORGANIC ENAMEL, SAID METHOD COMPRISING PLACING SAID MEMBERS IN CONTACT AND IMMERSING THEM IN A BATH OF MOLTEN LEAD HAVING A LAYER OF A MATERIAL COMPRISING MOLTEN LEAD OXIDE FLOATING THEREON, TO REMOVE SAID ENAMEL AND FLUX THE SURFACES OF SAID MEMBERS WITH SAID LEAD OXIDE, AND THEN REMOVING SAID MEMBERS FROM SAID BATH WITH COATING OF LEAD DEPOSITED THEREON.
Claim 2
Independent Claim
81 words
A METHOD OF JOINING TWO METALLIC MEMBERS CONSISTING ESSENTIALLY OF COPPER, AT LEAST ONE OF SAID MEMBERS HAVING A COVERING OF ORGANIC ENAMEL, SAID METHOD COMPRISING PLACING SAID MEMBERS IN CONTACT AND IMMERSING THEM IN A BATH OF MOLTEN LEAD HAVING A LAYER OF A MATERIAL COMPRISING MOLTEN LEAD OXIDE FLOATING THEREON, TO REMOVE SAID ENAMEL AND FLUX THE SURFACES OF SAID MEMBERS WITH SAID LEAD OXIDE, AND THEN REMOVING SAID MEMBERS FROM SAID BATH WITH COATING OF LEAD DEPOSITED THEREON.
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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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |