...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 6518474 | Process for producing isobutylene from tertiary butyl alcohol A process for producing substantially pure isobutylene containing relatively small amounts of higher oligomer byproducts. The process may employ a Y-zeolite catalyst having a silica to alumina ratio of less than or equal to about ten.... | 02/11/2003 |
| 6218582 | Method for the reduced formation of tertiary butyl alcohol in a finishing reactor in the manufacture of methyl tertiary butyl ether A method for the preparation of methyl tertiary butyl ether is provided wherein a mixture of methanol and substantially peroxides-free tertiary butyl alcohol are catalytically reacted to form a reaction product comprising unreacted methanol, unreacted ter... | 04/17/2001 |