Patent US2903351A successfully refreshed from Google Patents.
US2903351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thorium-beryllium alloys and method of producing same
Assignee: Individual
•
Filing: 1949-04-11
•
Granted: 1959-09-08
•
Expires: 1969-04-11
Abstract
No abstract record available.
Inventors
- 👤 Frank H Spedding
- 👤 Harley A Wilhelm
- 👤 Wayne H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:53
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0291; C22B34/00; C22B34/10; C22C; C22C25/00; C22C43/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF PREPARING A THORIUM-BERYLLIUM ALLOY COMPRISING THE STEPS OF SIMULTANEOUSLY REDUCING FLUORIDE OF THORIUM AND A HALIDE OF BERYLLIUM WITH A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH AT A TEMPERATURE SUFFICIENTLY HIGH TO FORM A MOLTEN ALLOY OF SAID METALS, AND OF MAINTAINING SAID ELEVATED TEMPERATURE UNTIL SEPARATION OF THE
Claim 2
Dependent Claim
4 words
A BINARY THORIUM-BERYLLIUM ALLOY.
References Cited (Backward Citations)
US1728940A
Cited
US1648954A
Cited
US1814721A
Cited
US1728942A
Cited
US2025614A
Cited
US2193363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |