US PATENT SUBCLASS 48 / 197 R
PROCESSES

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

197 RPROCESSES {15}
198.1  DF  .~> Manufacture from methane (natural gas) {6}
*  DD  .~> Hydrogen {1}
200  DF  .~> Coal, oil and water
201  DF  .~> Coal and oil
202  DF  .~> Coal and water
203  DF  .~> Producer
204  DF  .~> Water {4}
209  DF  .~> Wood
210  DF  .~> Coal
211  DF  .~> Oil {2}
214 R  DF  .~> Oil and steam injected {2}
216  DF  .~> Acetylene {1}
219  DF  .~> Carbureting
197 FM  DF  .~> Fuel mixtures
197 A  DF  .~> Sewage treatment

Unofficial Alpha Subclasses: R FM A

DEFINITION

Classification: 48/197

Processes not otherwise classifiable for the manufacture and accessory treatment of gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127.1, for a process in which a hydrocarbon gas feedstock is converted to fuel gas of a different composition and this latter composition is blended with hydrocarbon gas.

127.3+, for a fuel gas product containing methane or a process for treating or recovering such a product.

SEE OR SEARCH CLASS

44, Fuel and Related Compositions,

300, 459 for liquefied, normally gaseous fuel compositions, classified principally on the basis of nonhydrocarbon additives thereto.

204, Chemistry: Electrical and Wave Energy, for production of gaseous compounds or elements involving chemical reactions which are caused by more than the mere thermal effects of electrical or wave energy, especially

170+, for a process involving a chemical reaction brought about by an electrostatic field or electrical discharge to produce a gaseous hydrocarbon. 205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, for electrolysis, especially

334+, for electrolytic synthesis of a chemical compound or element.

518, Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof, for processes of producing nonfuel gases, which are not specifically set forth as being useful as fuels, by the reaction of hydrogen with carbon oxides.

585, Chemistry of Hydrocarbon Compounds, particularly

14, for liquified, normally gaseous fuel compositions which are mixtures of hydrocarbons only.

588, Hazardous or Toxic Waste Destruction or Containment, appropriate subclasses for the use of heat, vacuum, or chemical agents when destroying or containing hazardous or toxic waste.