242843 ⎘
Synthetic resins or natural rubbers -- part of the class 520 series Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon
Sub-classes:Natural rubber latex having reduced allergenicity and method of making
#2Natural rubber latex having reduced allergenicity and method of making
#3Elastomer composition, method for producing the same, and eraser using the same
#4Elastomer composition, method for producing the same, and eraser using the same
#5Reaction of carbon black with diazonium salts, resultant carbon black products and their uses