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...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.

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Class 518 - Chemistry: fischer-tropsch processes; or purification or recovery of products thereof

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29 Subclasses


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Definition

This class provides for processes which include (a) the reaction of hydrogen with carbon monoxide, carbon dioxide or mixtures of these carbon oxides (Fischer-Tropsch synthesis) to yield one or more carbon compounds, e.g., hydrocarbons, alcohols, esters, acids, ketones, aldehydes, etc., or (b) the purification, separation, conversion or treatment of one or more of the products resulting from the Fischer-Tropsch synthesis, such as by saponification, oxidation, adsorption, solvent extraction, etc.

Notes

(1) Note. Class 518 provides for Fischer-Tropsch synthesis in combination with separation and also for mere separation of the results of Fischer-Tropsch synthesis, except as shown below in the "Relationship with Other Classes". (2) Note. This Class 518 provides for a process which includes Fischer-Tropsch synthesis as well as making one or more reactants preliminary thereto. The reactants (hydrogen, carbon monoxide or carbon dioxide) may be made separately or in admixture. (3) Note. Processes that include other reactants in addition to hydrogen, carbon monoxide, carbon dioxide or water will be classified with the compound produced. (4) Note. For the purpose of purification or recovery of a Fischer-Tropsch process product, Class 518 provides for any physical process required, but only two chemical processes are provided for, i.e., hydrogenation with gaseous hydrogen and formation of oximes of the oxygen containing products.

 
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