| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | Minnesota Mining & Mfg (St. Paul; Minn) |
| PATENT CLAIMS |
Tungsten oxide soln prepn - Providing peroxypolytungstate soln - Converting peroxide bonds to oxide bonds by heating |
| PATENT PHOTOCOPY | Available on request |
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