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3-Isochromanone is prepared by reacting an o-xylene-α,α'-dihalide with carbon monoxide and water in the presence of a catalyst, characterized in that the pH of the reaction is maintained between 7 and 11.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
05 June 1998
Publication Number
Publication Type
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2006-01-27
Renewal Date
Applicants
ZENECA LIMITED
15 STANHOPE GATE, LONDON W1Y 6LN, ENGLAND
Inventors
1. HANNAH SALLIE ROBERTSON MCCANN
ZENECA GRANGEMOUTH WORKS, EARLS ROAD, GRANGEMOUTH, STIRLINGSHIRE FK3 3XG, U.K
2. RAYMOND VINCENT HEAVON JONES
ZENECA GRANGEMOUTH WORKS, EARLS ROAD, GRANGEMOUTH, STIRLINGSHIRE FK3 3XG, U.K
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 1542-del-1998-petition-others.pdf | 2011-08-21 |
| 2 | 1542-del-1998-pct-409.pdf | 2011-08-21 |
| 3 | 1542-del-1998-gpa.pdf | 2011-08-21 |
| 4 | 1542-del-1998-form-9.pdf | 2011-08-21 |
| 5 | 1542-del-1998-form-6.pdf | 2011-08-21 |
| 6 | 1542-del-1998-form-4.pdf | 2011-08-21 |
| 7 | 1542-del-1998-form-3.pdf | 2011-08-21 |
| 8 | 1542-del-1998-form-2.pdf | 2011-08-21 |
| 9 | 1542-del-1998-form-13.pdf | 2011-08-21 |
| 10 | 1542-del-1998-form-1.pdf | 2011-08-21 |
| 11 | 1542-del-1998-description (complete).pdf | 2011-08-21 |
| 12 | 1542-del-1998-correspondence-po.pdf | 2011-08-21 |
| 13 | 1542-del-1998-correspondence-others.pdf | 2011-08-21 |
| 14 | 1542-del-1998-complete specification (granted).pdf | 2011-08-21 |
| 15 | 1542-del-1998-claims.pdf | 2011-08-21 |
| 16 | 1542-del-1998-abstract.pdf | 2011-08-21 |