US2804885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product of arc welding
Assignee: Fansteel Inc
•
Filing: 1954-10-15
•
Granted: 1957-09-03
•
Expires: 1974-10-15
Abstract
No abstract record available.
Inventors
- 👤 Chester D Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:46
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/23; B23K9/16; B23K9/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A TANTALUM ARTICLE HAVING TWO PORTIONS OF TANTALUM WELDED ALONG A CONTINUOUS LINE, THE WELD CONSISTING SOLELY OF TANTALUM AND BEING DENSE, HOMOGENEOUS, SUBSTANTIALLY FREE OF GAS POCKETS, AND HAVING SUBSTANTIALLY THE SAME CHARACTERISTIC TOUGHNESS, DUCTILITY AND SUSCEPTIBILITY TO COLD-WORKING AS ARE CHARACTERISTIC OF THE TANTALUM BEYOND THE WELD,SAID TANTALUM AT THE WELD HAVING SOMEWHAT LONGER CRYSTALS THAN IS TRUE OF THE MAIN BODY OF UNWELDED TANTALUM.
Claim 2
Dependent Claim
67 words
A TANTALUM ARTICLE HAVING TWO PORTIONS OF TANTALUM WELDED ALONG A CONTINUOUS LINE, THE WELD CONSISTING SOLELY OF TANTALUM AND BEING DENSE, HOMOGENEOUS, SUBSTANTIALLY FREE OF GAS POCKETS, AND HAVING SUBSTANTIALLY THE SAME CHARACTERISTIC TOUGHNESS, DUCTILITY AND SUSCEPTIBILITY TO COLD-WORKING AS ARE CHARACTERISTIC OF THE TANTALUM BEYOND THE WELD,SAID TANTALUM AT THE WELD HAVING SOMEWHAT LONGER CRYSTALS THAN IS TRUE OF THE MAIN BODY OF UNWELDED TANTALUM.
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |