| Search Again | Story County, Iowa Inventory Patents |
Story Co. Home Page |
| Name | Patent Title | Patent Number |
City | Year |
|---|---|---|---|---|
| Lionel K. ARNOLD | countercurrent extraction apparatus | 02497700 | Ames | 1950 |
| Lionel K. ARNOLD | solvent extraction apparatus and process | 02501880 | Ames | 1950 |
| Lionel K. ARNOLD | solvent recovery by distillation | 02504053 | Ames | 1950 |
| Lionel K. ARNOLD | drying equipment | 02554769 | Ames | 1951 |
| Lionel K. ARNOLD | production of lignin, cellulose, and pentosans | 02615883 | Ames | 1952 |
| Lionel K. ARNOLD | plastic from furfural and lignin or lignin sulfonic acid | 02671061 | Ames | 1954 |
| Lionel K. ARNOLD | method of impregnating wood with wood-preserving oil | 02799597 | Ames | 1957 |
| Lionel K. ARNOLD | process of polymerizing a mixture of furfural, a secondary aromatic amine and a lignin compound and product obtained thereby | 02871207 | Ames | 1959 |
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