US2729689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbide product and methylacetylene
Assignee: Airco Inc
•
Filing: 1952-05-27
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Granted: 1956-01-03
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Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Edward R Blanchard
- 👤 Francis E Mckenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/931; Y10S585/943
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
A PROCESS OF PRODUCING A PRODUCT CONTAINING MAGNESIUM SESQUICARBIDE WHICH COMPRISES HEATING AND REACTING CALCIUM CARBIDE AND SUBSTANTIALLY ANHYDROUS MAGNESIUM CHLORIDE, SAID REACTANTS BEING IN FINELY-DIVIDED STATE AND IN INTIMATE CONTACT, CARRYING OUT THE REACTION IN AN INERT ATMOSPHERE, AND MAINTAINING THE REACTION MIXTURE AT A TEMPERATURE AT LEAST SUFFICIENT FOR THE FORMATION OF MAGNESIUM SESQUICARBIDE BUT BELOW THAT WHICH CAUSES ANY SUBSTANTIAL MELTING OF THE MAGNESIUM CHLORIDE AND ANY SUBSTANTIAL DECOMPOSITION OF THE MAGNESIUM SESQUICARBIDE WHEREBY SAID CALCIUM CARBIDE AND SAID MAGNESIUM CHLORIDE ARE REACTED IN A SOLID STATE.
Claim 2
Dependent Claim
90 words
A PROCESS OF PRODUCING A PRODUCT CONTAINING MAGNESIUM SESQUICARBIDE WHICH COMPRISES HEATING AND REACTING CALCIUM CARBIDE AND SUBSTANTIALLY ANHYDROUS MAGNESIUM CHLORIDE, SAID REACTANTS BEING IN FINELY-DIVIDED STATE AND IN INTIMATE CONTACT, CARRYING OUT THE REACTION IN AN INERT ATMOSPHERE, AND MAINTAINING THE REACTION MIXTURE AT A TEMPERATURE AT LEAST SUFFICIENT FOR THE FORMATION OF MAGNESIUM SESQUICARBIDE BUT BELOW THAT WHICH CAUSES ANY SUBSTANTIAL MELTING OF THE MAGNESIUM CHLORIDE AND ANY SUBSTANTIAL DECOMPOSITION OF THE MAGNESIUM SESQUICARBIDE WHEREBY SAID CALCIUM CARBIDE AND SAID MAGNESIUM CHLORIDE ARE REACTED IN A SOLID STATE.
Claim 3
Dependent Claim
23 words
A PROCESS IN ACCORDANCE WITH CLAIM 1 WHEREIN THE MAGNESIUM SESQUICARBIDE PRODUCT FORMED IS TREATED WITH AN AGENT CAPABLE OF GENERATING METHYLACETYLENE THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |