US2575760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of heavy metal borohydrides
Assignee: Individual
•
Filing: 1950-05-17
•
Granted: 1951-11-20
•
Expires: 1970-05-17
Abstract
No abstract record available.
Inventors
- 👤 Henry R Hoekstra
- 👤 Joseph J Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:22
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
18 words
THE PROCESS OF PREPARING ZIRCONIUM BOROHYDRIDE, WHICH COMPRISES REACTING UNDER AN INERT ATMOSPHERE SODIUM-ZIRCONIUM FLUORIDE WITH ALUMINUM BOROHYDRIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |