(under the class definition) Process wherein hazardous or
toxic waste substances containing nitrogen or phosphorus are destroyed or converted into an environmentally safe substance.
SEE OR SEARCH CLASS
210, Liquid Purification or Separation, appropriate subclasses for processes in general for liquid purification or separation of liquid phases. The line between Class 210 and Class 588 is that, if there is a specific statement in the claim that hazardous or toxic waste is destroyed, separated, or converted into an environmentally safe substance, the process is placed in Class 588; however, if purified liquid, e.g., water, is obtained as a desired product, place the process in Class 210.
423, Chemistry of Inorganic Compounds,
299+, for the production of phosphorus or phosphorus compounds and subclasses 351+ for the production of nitrogen or nitrogen compounds.
