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Class Information
Number: 528/52D
Name: Synthetic resins or natural rubbers -- part of the class 520 series >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
528/	Synthetic resins (class 520, subclass 1)	0
528/901	Room temperature curable silicon-containing polymer	325
528/902	Particulate material prepared from an isocyanate	40
528/903	Polymerizing or processing an isocyanate under substantially anhydrous conditions	14
528/904	Isocyanate polymer having stated hydrophilic or hydrophobic property	75
528/905	Polymer prepared from isocyanate reactant has adhesive property	144
528/906	Fiber or elastomer prepared from an isocyanate reactant	90
528/930	Guayule rubber	16
528/931	Physical treatment of natural rubber or natural rubber containing material or chemical treatment of non-rubber portion thereof, e.g., extraction of rubber from milk weed, etc.	14
528/950	Polymers useful for replacing hard animal tissues, e.g., dentures, bones, etc.	62