Toyo Pulp Co., Ltd.
9Patents
0Active
9Granted
28Portfolio score
Filing activity: Oct 1, 1974 → Mar 2, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4274913A | Process for producing alkali pulp | Textiles; Paper | 35 | Expired |
| US4089737A | Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein | Textiles; Paper | 20 | Expired |
| US4045279A | Process for the manufacture of pulp using sodium carbonate and oxygen | Textiles; Paper | 17 | Expired |
| US4184526A | Disc-shaped chipper with detachable cutting members | Performing Operations; Transporting | 14 | Expired |
| US4000264A | Method of recovering sodium hydroxide from sulfur free pulping or bleaching waste liquor by mixing ferric oxide with condensed waste liquor prior to burning | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4297402A | Packaging bag | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4161972A | Apparatus for producing chips from logs of timber | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4383890A | Ceramic sheet and method for producing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4232720A | Round log material and method of producing the same | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.