| 2544999 | Method of producing vanillin | |||
| 2516827 | Method of producing vanillin | |||
| 2434626 | Process for making vanillin | |||
| 2394989 | Manufacture of cellulose | |||
| 2243050 | Process of producing spinnable fibers and cellulose from plants | |||
| 2007024 | Chemical pulping process | |||
| 1985195 | Line stop for typographical machines | |||
| 1922262 | Process of making chemical pulp | |||
| 1831032 | Production of refined wood pulp | |||
| 1804893 | Process of decomposing lignified fibers | |||
| 1739683 | Treatment of fibrous vegetable materials | |||
| 0773941 | N/A | |||
| 0616988 | N/A |
| GB481631A |