Patent US2494993A successfully refreshed from Google Patents.
US2494993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chlorocresols
Assignee: Imperial Chemical Industries Ltd
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Filing: 1945-07-25
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Granted: 1950-01-17
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Expires: 1965-07-25
Abstract
No abstract record available.
Inventors
- 👤 Foster Reginald Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:25
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A PROCESS FOR THE PRODUCTION OF A MONOCHLORO-CRESOL WHICH COMPRISES INTRODUCING CHLORINE INTO A SOLVENTLESS MOLTEN CRESOL AT A TEMPERATURE BETWEEN 80* C. AND 100* C., AND TERMINATING THE INTRODUCTION OF CHLORINE WHEN THE REACTION PRODUCT CONTAINS, IN COMBINATION, BETWEEN 0.9 AND 1.2 ATOMS OF CHLORINE PER MOLECULE.
Claim 2
Dependent Claim
48 words
A PROCESS FOR THE PRODUCTION OF A MONOCHLORO-CRESOL WHICH COMPRISES INTRODUCING CHLORINE INTO A SOLVENTLESS MOLTEN CRESOL AT A TEMPERATURE BETWEEN 80* C. AND 100* C., AND TERMINATING THE INTRODUCTION OF CHLORINE WHEN THE REACTION PRODUCT CONTAINS, IN COMBINATION, BETWEEN 0.9 AND 1.2 ATOMS OF CHLORINE PER MOLECULE.
References Cited (Backward Citations)
DE232071C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |