Treatment Of Hides, Skins, Feathers And Animal Tissues Patents (Class 8/94.1R)
- With subsequent treatment (Class 8/94.2)
- With aldehyde-aromatic condensation product (Class 8/94.24)
- With heavy metal compound (Class 8/94.25)
- With aluminum compound (Class 8/94.29)
- With cellulose liberation liquor (Class 8/94.31)
- With vegetable extract (Class 8/94.32)
- With organic material (Class 8/94.33)
- Resin condensation in situ in leather (Class 8/94.19C)