| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
- Introducing leak detecting amount of naphthalimide-deriv. colorant which is present in a neat liquid state at ambient T & pressure, wherein said colorant is reaction prodt of 4-halo -1,8-naphthalic anhydride & etheramine, within a lubricant to form colorant/lubricant mixt (I) - Introducing (I) within refrigeration system compn comprising refrigerant compn - Operating said system for sufficient time to allow through mixing of (I) & refrigerant compn - Determining presence of a leak in system by directing UV light at system & detecting fluorescent color through visual observation |
| PATENT PHOTOCOPY | Available on request |
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