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Class Information
Number: 528/54.1
Name: Synthetic resins or natural rubbers -- part of the class 520 series >

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 336
528/902 Particulate material prepared from an isocyanate 42
528/903 Polymerizing or processing an isocyanate under substantially anhydrous conditions 15
528/904 Isocyanate polymer having stated hydrophilic or hydrophobic property 77
528/905 Polymer prepared from isocyanate reactant has adhesive property 150
528/906 Fiber or elastomer prepared from an isocyanate reactant 93
528/930 Guayule rubber 18
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. 17
528/950 Polymers useful for replacing hard animal tissues, e.g., dentures, bones, etc. 62

Patents under this class:

Patent Number Title Of Patent Date Issued

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