U.S. patents available from 1976 to present.
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Class 71/903 - SOIL CONDITIONER


Subclass of Class 71 - Chemistry: fertilizers
Definition: Art collection involving material having values which treat
No. of patents: 283
Last issue date: 07/01/2008


              8  
NumberTitleIssue Date
3940257Soil conditioning fertilizer compound
A soil conditioning and fertilizer composition and the process of producing it is disclosed, the composition composed of particulate seaweed intimately mixed with particulate tree bark....
02/24/1976
3936292Compositions for use in agriculture as soil modifiers and their method of manufacture
Compositions useful in agriculture as soil modifiers and fertilizers are prepared by contacting the waste materials, obtained in the manufacture of titanium dioxide from ilmenites by the sulphate process, and which consist essentially of ferrous sulphate,...
02/03/1976
3932166Landfill and soil conditioner
A method for converting organic waste materials into inert humus-like materials by charring the organic waste materials by heating and drying same in the presence of certain water-soluble inorganic acids, removing residual acid and other water-soluble con...
01/13/1976
              8  
 
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