Lewis C.Karrick: US Patents ~ Low Temperature Carbonization
of Coal


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**Lewis C. KARRICK** **Low Temperature Carbonization of Coal ( LTC )**
**US Patents**  


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> **USP # 1,832,219** **Process & Apparatus for Superheating Steam****(Nov. 17,
> 1931)****[PDF](1832219.pdf)**
>
>
> ![](1832219.gif)
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> **USP # 1,901,170** **Gasification of Carbonaceous Material** **(14 March 1933)** **[PDF](1901170.pdf)**
>
> ![](xfig1.gif)
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> **USP # 1,913,395  
> Underground Gasification of Carbonaceous Material Bearing
> Substances**   
> **(June 13, 1933)****[PDF](1913395/1913395.htm)**
>
> ![](1913395.gif)
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> **USP # 1,919,636**   
> **System of Mining Oil
> Shales****(July 25,
> 1933)****[PDF](1919636.pdf)**
>
> ![](1919636.gif)
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> **USP # 1,923,213    
> Process & Apparatus for Carbonizing Coal****(Aug. 22,
> 1933)****[PDF](1923213.pdf)**
>
> ![](1923213.gif)
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> **USP # 1,938,596****Retort****(Dec. 12,
> 1933)   
> [PDF](1938596.pdf)**
>
> ![](1938596.gif)
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> **USP # 1,942,650  
> Apparatus for Coking Bituminous Liquids & the Like**  
>  **(Jan. 9, 1934)****[PDF](1942650.pdf)**
>
> ![](1942650.gif)
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> **USP # 1,950,558****Process for
> the Production of Gas, Oil, & Other Products****(March 13,
> 1934)  
> [PDF](1950558.pdf)**
>
> ![](1950558.gif)
>
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> **USP # 1,958,918****Process of
> Destructively Distilling Solid Carbonaceous Material****(May 15,
> 1934)**   
> **[PDF](1958918.pdf)**
>
> ![](1958918.gif)
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> **USP # 2,011,054**  **Process of Destructive Distillation of Carbonaceous
> Materia  
> l****(Aug.
> 13, 1935)**   
> **[PDF](2011054.pdf)**
>
> ![](2011054.gif)
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>
> **USP # 2,165,143****Coal
> Treating Process & Apparatus****(July 4,
> 1939)  
>  [PDF](2165143.pdf)**
>
> ![](2165143.gif)
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>
> **USP # 2,268,989****Process for
> Improving Fuel****(Jan. 6,
> 1942)  
> [PDF](2268989.pdf)**
>
> ![](2268989.gif)
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> **USP # 2,283,556****Valve****(May 19,
> 1942)   
> [PDF](2283556.pdf)**
>
> ![](2283556.gif)
>
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