Spiro compounds
US4042635A · kind A · utility
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2Claims
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Key dates
| Filing date | Dec 8, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Dec 8, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B43/1247
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds which contain a group bonded directly to an aromatic nucleus of the formula EQU --(CH.sub.2 --).sub.n --X (1) in which n is a positive integer having a value of at least 2 and X represents a removable substituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.