US2916809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tungsten base alloys
Assignee: Individual
•
Filing: 1958-06-30
•
Granted: 1959-12-15
•
Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Donald H Schell
- 👤 Sheinberg Haskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:29
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04; C22C1/00; C22C1/04; C22C1/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A TUNGSTEN BASE ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 1.72% NICKEL, ABOUT 2.47% COPPER, ABOUT 4.13% LEAD AND THE BALANCE TUNGSTEN.
Claim 2
Dependent Claim
22 words
A TUNGSTEN BASE ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 1.72% NICKEL, ABOUT 2.47% COPPER, ABOUT 4.13% LEAD AND THE BALANCE TUNGSTEN.
References Cited (Backward Citations)
US2250099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |