US2745738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel alloy blanks for glass-to-metal seal
Assignee: United States Steel Corp
•
Filing: 1951-09-12
•
Granted: 1956-05-15
•
Expires: 1971-09-12
Abstract
No abstract record available.
Inventors
- 👤 Freeman J Phillips
- 👤 Smith Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:57
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A METHOD BLANK FOR FORMING A GLASS-TO METAL SEAL, SAID BLANK BEING FORMED OF STEEL CONTAINING .005 TO .12% CARBON, 15 TO 20% CHROMIUM, NIL TO 1.00% MANGANESE, NIL TO 1.00% NIL TO 1.00% ALUMINUM, NIL TO 1.00% TITANIUM, NIL TO 1.00% NICKEL, AND BALANCE SUBSTANTIALLY IRON, SAID CARBON, CHROMIUM, SILICON, ALUMINUM, TITANIUM, MANGANESE AND NICKEL BEING RESTRICTED TO AMOUNTS CONSISTENT WITH THE FORMULA
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |