4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. Ion-exchange polymer or process of preparing

Witold Andrew Ziarno

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Metal-doped sulfonated ion exchange resin catalysts

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate

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Method for preparation of strong acid cation exchange resins

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate

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Porous non-friable polymer film

Chemistry: molecular biology and microbiology – Carrier-bound or immobilized enzyme or microbial cell;... – Enzyme or microbial cell is immobilized on or in an organic...
Reexamination Certificate

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