H s removal from gas streams

H.sub.2s removal process

H.sub.2s removal with oxidizing polyvalent metal chelate and...

H2s absorption with subsequent oxalate removal

Hair dye color selection system and method

Half-metallocene catalyst compositions and their polymer...

Halide free precursors for catalysts

Halide scavengers for high temperature applications

Halogen resistant hydrotreating process and catalyst

Halogen-containing catalyst and process for preparing same

Halogen-free catalyst for ethylene polymerization

Halogenated alumine-based catalyst; process for preparing...

Halogenated organic particles for catalyst supports

Halogenated polysilane and plasma-chemical process for...

Halogenated polysilane and thermal process for producing the...

Halogenation process

Halohydrination process

Halonitriles and their preparation

Halosilane catalyst and process for making same

Hand pipetting device