4. Chemistry of inorganic compounds
  5. Selenium or tellurium or compound thereof

Klaus-Dieter Hellwig

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Doped precipitated silica

Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Reexamination Certificate

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Method for preparation of alkali metal selenates

Chemistry of inorganic compounds – Selenium or tellurium or compound thereof
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Process for covering silicas with wax

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-790127

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