(under the class definition) Processes directed to thermolytically decomposing solid, carbonaceous material by applying heat not otherwise provided for.
(1) Note. In this subclass are combinations not provided for above and not provided for elsewhere.
SEE OR SEARCH CLASS
423, Chemistry of Inorganic Compounds,
449+, for processes for producing carbon by a chemical reaction, e.g. oxidation, etc.
CROSS-REFERENCE ART COLLECTIONS
The following subclasses represent at least a substantial collection of patents found elsewhere in the classification of this class, but merit isolation for aid in searching certain concepts which do not form appropriate bases for the placement of original patents. These concepts are as given in the titles and definitions of the subclasses listed hereunder. The cross-reference patents contained in these collections may be of further assistance to the searcher, either as a starting point in searching this class or as an indication of further related fields of search inside or outside the class. Thus, there is here provided a further path of access for retrieval of a limited number of types of disclosure.
(1) Note. Disclosure are placed in these subclasses for their value as references and as leads to appropriate main or secondary fields of search, without regard to their original classification or their claimed subject matter.
(2) Note. The disclosures found in the following subclasses are examples, only, of the indicated subject matter, and in no instance do they represent the entire extent of the prior art.
