Patent EP0121971A1 successfully refreshed from Google Patents.
Patent US2573973A successfully refreshed from Google Patents.
US2573973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiocyanated derivative of tetrachlorobutane
Assignee: Sunoco Inc
•
Filing: 1950-09-30
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Granted: 1951-11-06
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Expires: 1970-09-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Johnson
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:26
CPC Classifications
C; C07; C07C; C07C331/00; C07C331/02; C07C331/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE REACTION PRODUCT OBTAINED UPON CAUSING AN ALKALI METAL THIOCYANATE TO REACT WITH LIQUID 1,2,3,4-TETRACHLOROBUTANE DISSOLVED IN AN INERT SOLVENT, SAID REACTION BEING PERFORMED AT A TEMPERATURE OF FROM 50* C. TO 150* C. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF SUB-DIVIDED METALLIC COPPER, AN ALKALI METAL BROMIDE, AND AN ALKALI METAL IODIDE.
Claim 2
Dependent Claim
58 words
THE REACTION PRODUCT OBTAINED UPON CAUSING AN ALKALI METAL THIOCYANATE TO REACT WITH LIQUID 1,2,3,4-TETRACHLOROBUTANE DISSOLVED IN AN INERT SOLVENT, SAID REACTION BEING PERFORMED AT A TEMPERATURE OF FROM 50* C. TO 150* C. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF SUB-DIVIDED METALLIC COPPER, AN ALKALI METAL BROMIDE, AND AN ALKALI METAL IODIDE.
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) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |