Description: 525 synthetic resins or natural rubbers -- part of the class 520 series / 525 synthetic resins or natural rubbers -- part of the class 520 series/() synthetic resins (class 520, subclass 1) (50) mixing of two or more solid polymers; mixing of solid polymer or sicp with sicp or spfi; mixing of sicp with an ethylenic agent; mixing of solid polymer with a chemical treating or ethylenic agent; or processes of forming or reacting; or the resultant product of any of the above operations (54.2) previously formed solid polymer chemically reacted with carbohydrate or derivative
Hierarchy/Derived subclasses
uspto searches
Patent Apps in 525/54.2
Granted Patents in 525/54.2
Use the links above or do an advanced search in
ppubs for:
(525/54.2.ccls. or 525/54.21.ccls. or 525/54.22.ccls. or 525/54.23.ccls. or 525/54.24.ccls. or 525/54.26.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find
patents or patent applications in those subclasses.