By Isomerization Patents (Class 585/734)
- With additional metal halide (Class 585/742)
- With S-containing or free or organic halogen agent (Class 585/743)
- With metal oxide or elemental carbon, e.g., supported, etc. (Class 585/744)
- With added organic agent or in complex with organic material (Class 585/745)
- With inorganic material other than halogen-containing (Class 585/746)