US2899052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium carbide
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
C; C10; C10H; C10H21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A UNIT FOR THE SAFE HANDLING AND STORAGE OF CALCIUM CARBID COMPRISING A SEALED CONTAINER, FINELY DIVIDED CALCIUM CARBIDE PACKED IN SAID CONTAINER, THE CARBIDE PARTICLES BEING OF A FINENESS TO PASS THROUGH A 20-MESH SCREEN, SOLID CARBON DIOXIDE GAS RANGING CIENT TO SUPPLY A VOLUME OF CARBON DIOXIDE GAS RANGING FROM TWO TO FOUR TIMES THE VOLUME OF THE FREE AIR SPACE WITHIN SAID CONTAINER, A MAXIMUM AMOUNT OF ACETYLENE GENERATED FROM SAID CALCIUM CARBIDE WHICH IS LESS THAN 1% OF THE GASEOUS MIXTURE WITHIN SAID CONTAINER, AND SAID SOLID CARBON DIOXIDE RANGING FROM ABOUT 0.05% TO 0.60% OF SAID CALCIUM CARBIDE BY WEIGHT.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |