| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 10.99 |
| PATENT ASSIGNEE | Vision International Production |
| PATENT CLAIMS |
Bi-layer laundry tablet for use in a washing machine - First dissolvable layer including an alkaline substance for initially raising the pH level of water to 8-14 - Second dissolvable layer including an acidic substance selected from the group consisting of Na bifluoride & Na fluosilicate for lowering pH to 7, said second layer concentri cally disposed within first dissolvable layer |
| PATENT PHOTOCOPY | Available on request |
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