Subclass Subgroup Patent
C10B 53/07 11572510
C10G 1/10 11572511
  2/31 11572512
  3/00 11572513
  29/28 11572514
  67/14 11572515
  69/06 11572516
  69/08 11572517
C10J 3/56 11572518
C10M 107/38 11572519
    11572520
  125/02 11572521
  133/08 11572522
  135/02 11572523
  135/20 11572524
  169/041 11572525
  169/044 11572526
  171/02 11572527