Patent US2564950A successfully refreshed from Google Patents.
US2564950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-to-metal seal and composition thereof
Assignee: OI Glass Inc
•
Filing: 1947-01-31
•
Granted: 1951-08-21
•
Expires: 1967-01-31
Abstract
No abstract record available.
Inventors
- 👤 Harold R Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:08
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/095; C03C27/00; C03C27/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
14 words
A GLASS CONSISTING OF THE FOLLOWING OXIDES AND IN SUBSTANTIALLY THE FOLLOWING PROPORTIONS, NAMELY;
Claim 2
Dependent Claim
14 words
A GLASS CONSISTING OF THE FOLLOWING OXIDES AND IN SUBSTANTIALLY THE FOLLOWING PROPORTIONS, NAMELY;
Claim 3
Dependent Claim
35 words
A VACUUMTIGHT SEAL BETWEEN THE GLASS AS DEFINED IN CLAIM 1 AND AN ALLOY COMPRISING ESSENTIALLY IRON, NICKEL, AND COBALT IN ABOUT THE PROPORTIONS OF 54 PARTS IRON, 28 PARTS NICKEL AND 18 PARTS COBALT.
References Cited (Backward Citations)
US2071196A
Cited
US1545509A
Cited
US2049765A
Cited
US2167482A
Cited
US2226418A
Cited
US2408468A
Cited
US2426472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |