4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. From carboxylic acid or derivative thereof

Wen Chung Chang

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Method of polymerization of lactide and polylactide...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
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Method of preparing microsphere composite of collagen and...

Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten...
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Structure applied to a photolithographic process and method...

Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
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