US2666690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of carbon disulfide
Assignee: FOOD MACHIENRY AND CHEMICAL CO
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Filing: 1951-12-28
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Granted: 1954-01-19
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Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Miller Elmer
- 👤 Hennig Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF CONVERTING HYDROCARBONS TO CARBON DISULFIDE BY REACTION WITH SULFUR, SAID HYDROCARBONS CONTAINING CONSTITUENTS TENDING TO FORM TARRY SULFUR-CONTAINING BY-PRODUCTS, COMPRISING PASSING PREHEATED HYDROCARBONS AND PREHEATED SULFUR VAPORS INTO CONTACT WITH AN AGGLOMERATING MATERIAL IN A REACTION ZONE, SAID AGGLOMERATING MATERIAL BEING CAPABLE OF OCCLUDING SAID SULFUR-CONTAINING BY-PRODUCTS AND SAID REACTION ZONE BEING MAINTAINED UNDER CONDITIONS TO PROMOTE THE FORMATION OF CARBON DISULFIDE AND HYDROGEN SULFIDE, SEPARATING SAID AGGLOMERATING MATERIAL AND THE CARBON DISULFIDE AND HYDROGEN SULFIDE SO FORMED, SUBJECTING SAID AGGLOMERATING MATERIAL TO AN OXIDIZING ATMOSPHERE CAPABLE OF OXIDIZING THE SULFUR CONTENT OF SAID OCCLUDED BYPRODUCTS TO SULFUR DIOXIDE, AND REACTING SAID SULFUR DIOXIDE SO PRODUCED WITH THE HYDROGEN SULFIDE UNDER CONDITIONS TO PRODUCE ELEMENTAL SULFUR FOR REUSE IN THE REACTION.
Claim 2
Independent Claim
124 words
THE METHOD OF CONVERTING HYDROCARBONS TO CARBON DISULFIDE BY REACTION WITH SULFUR, SAID HYDROCARBONS CONTAINING CONSTITUENTS TENDING TO FORM TARRY SULFUR-CONTAINING BY-PRODUCTS, COMPRISING PASSING PREHEATED HYDROCARBONS AND PREHEATED SULFUR VAPORS INTO CONTACT WITH AN AGGLOMERATING MATERIAL IN A REACTION ZONE, SAID AGGLOMERATING MATERIAL BEING CAPABLE OF OCCLUDING SAID SULFUR-CONTAINING BY-PRODUCTS AND SAID REACTION ZONE BEING MAINTAINED UNDER CONDITIONS TO PROMOTE THE FORMATION OF CARBON DISULFIDE AND HYDROGEN SULFIDE, SEPARATING SAID AGGLOMERATING MATERIAL AND THE CARBON DISULFIDE AND HYDROGEN SULFIDE SO FORMED, SUBJECTING SAID AGGLOMERATING MATERIAL TO AN OXIDIZING ATMOSPHERE CAPABLE OF OXIDIZING THE SULFUR CONTENT OF SAID OCCLUDED BYPRODUCTS TO SULFUR DIOXIDE, AND REACTING SAID SULFUR DIOXIDE SO PRODUCED WITH THE HYDROGEN SULFIDE UNDER CONDITIONS TO PRODUCE ELEMENTAL SULFUR FOR REUSE IN THE REACTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |