GREEN TECHNOLOGY MANUAL CODES

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With the interest in green products and services growing, many companies are investing greater amounts of their research and development budgets into earth-friendly, clean, and renewable technology. To help you monitor and track this growing field, you can reference the following tables providing listings of Green Technology Manual Codes for more precise searching of enhanced patent data in DWPI.

Transportation

Green Transportation

This category includes hybrid vehicles using a combustion engine and a flywheel energy storage or a combustion engine and an electric drive motor; electric vehicles and fuel cell vehicles (FCVs), e.g., using polymer electrolyte membrane (PEMFC); fuel cells using an offboard supply of hydrogen; and fuel cells using hydrogen from an onboard reformer, since these seem to be the most suitable fuel cells for vehicle applications.

Code Description of Technology Area
X21 Electric vehicles (general)
X21-A01J Fuel cell vehicles
X21-A01D Hybrid vehicles
(Including X21-A01D1 for parallel hybrid vehicles
and X21-A01D3 for series hybrid vehicles)
X21-B01A Fuel cells and batteries used in electric motor driven vehicles
N07-L03A Catalysts used in batteries and fuel cells
X16-C Fuel cells
X16-C15 Onboard vehicle hydrogen storage tanks; off-board storage or hydrogen filling stations
X16-C17 Hyrdogen reformers for enabling (less pure) hydrogen to be generated, e.g., on-board the vehicle, e.g., from hydrocarbons.
V05-F08F Molecular decomposition and fluid processing, e.g., for plasmatrons used in a vehicle to transform gasoline or other hydrocarbons into hydrogen rich gas, that is used as high quality fuel for the engine, resulting in greatly reduced pollution
L03-E04 Fuel cells and hydrogen generation/storage.
L03-E04A2 Solid polymer fuel cells.
L03-E04I. Hydrogen generation
A12-E06 Fuel cells.
X21-B04A Wind and solar power supplies related to electric vehicles
Suggested Keywords:
Fuel cell vehicle, FCV, fuel cell, polymer electrolyte membrane fuel cell, PEMFC, hydrogen, reformer, natural gas, LPG, liquefied petroleum gas, hybrid vehicle, hybrid electric vehicle, HEV, series hybrid vehicle, parallel hybrid vehicle, series-parallel hybrid vehicle
Alternative

Alternative Green Power (General)

Code Description of Technology Area
X15 Renewable energy sources such as solar and wind power
X15-A02 Solar power (general)
X15-B Wind power
X15-C Sea or wave power
X15-X Geothermal power and using traffic flow to generate electricity
A12-E11B Photoelectic cells (includes solar cells).
A12-R2B solar panels, collectors, heat storage devices
Chemistry & Environment

Green Chemistry & Environmental Awareness

Code Description of Technology Area
B14-Y Green Chemistry (Pharmaceuticals) – Used when processes/productions are kinder to the environment. Includes biodegradables.
C14-Y Green Chemistry (Agriculture Chemicals) ‑ Used when processes/productions are kinder to the environment. Includes biodegradables.
D05-C14 In D16, there is D05-C14, which covers the production of methane (specifically) and other biogases (if unspecified as being another named gas) by fermentation. The production of biofuels by fermentation might also be covered by the general code, D05-C, which may be helpful if searched along with biofuel keywords (as below). This generally covers the production of the biofuels from e.g., waste products, using enzymes and/or microorganisms.
Gaseous Biofuels
H06-A04 Gaseous biofuels, Biofuel gases (IPC: C10L-3/00)
(Keywords: biofuel gas, bio-fuel gas, biogas, methane, ethane, hydrogen.
Liquid Biofuels
H06-B04A Biodiesel (IPC: C10L-1/00)
(Keywords: biodiesel, bio-diesel, vegetable oil)
H06-B07 Liquid biofuels other than biodiesel and alcohol (IPC: C10L-1/00)
(Keyword: liquid biofuel, bioether)
H06-B08 Alcohol fuels (IPC: C10L-1/00)
(Keywords: bioalcohol, alcohol fuel, ethanol, propanol, butanol)
Solid Biofuels
H09-F03 Municipal and agricultural waste treatment (IPC: C10L-5/46)
(Keywords: plant, charcoal, algae, agrochemical)
D05-A04A Similar to H09-F03, there is the D16 code D05-A04A (Organic waste, town waste or sludge fermentation). This code might be useful if the focus were the recovery of organic products from sewage, animal by-products etc. for agrochemical use (e.g., organic fertilisers).
D04-A01J If the "green" focus were on the use of living organisms for the treatment of waste (i.e., corresponding with the plant and algae keywords suggested) rather than chemicals, then D04-A01J (Treatment of water, Biological process) would also be relevant.
Pollution & Waste

Pollution Control & Waste Treatment (General)

Code Description of Technology Area
A09-A07 Biodegradability (General)
N07-L01 Purification/waste disposal processes
Pollution Control
A12-W11 Pollution control
A12-W11E Pollution control using coagulants, flocculants or polyelectrolytes
A12-W11F Other pollution control
E11-Q02 Removal, effluent treatment (General)
E11-Q02A Engine exhaust treatment
E11-Q02B Industrial effluent treatment — for removing harmful materials from effluent that is discharged into the environment
E11-Q02C Other treatment such as removal of catalyst poisons or unwanted by-products from chemical reactions
E31-F01 Removal of sulphur compound(s) from wastes etc., optionally with recovery of S values-general
E31-F01A Removal of sulfur oxide (i.e., SO2, SO3, SOx)
E31-F01B Removal of S hydride (i.e., H2S)
E31-F01C Removal of other S compound (e.g., H2SO4 , thiosulfate)
E31-H01 Removal of N oxides from waste gases etc. catalytically
E31-H02 Other methods of removing N oxides from waste gases etc.
N07-L01A Catalytic combustion/oxidation of waste
N07-L01C Gas purification; waste gas treatment
N07-L01C1 Engine exhaust treatment
Waste Treatment
A11-C03 Scrap recovery (includes recycling of polymers)
A11-C07 Waste treatment; pollution control (i.e., during the processing of polymers)
F03-E02 Recycling, recovery (of fibres)
F05-A02C Regeneration of pulp liquors, use of residues, treatment of waste water (during paper-making and fibre-board production)
X25-W04 Electrical aspects of recycling in general
T04-G11B Recycling of printer cartridges etc
D04-B Impurity removal from water in general, including domestic, industrial or natural water.
D04-B03 Removal of mineral oil, hydrocarbons and coal slurry. For example, removal of methane, urea or oils and greases such as from waste water, recovery of the organic compounds.
D04-B04 Removal of natural products, including protein, starch, animal and vegetable fats and oils, natural animal, plant and fish material from e.g., power station inflow. For example clarification of water containing fat and waste from meat and dairy processing plants.
D04-B05 Removal of metals.
D04-B05A Removal of heavy metals or compounds thereof. For example, removal of heavy metals or removal of 2nd, 3rd row transition metals, Lanthanides or Actinides. Would also include any metal of atomic number 37 or higher (e.g., lead, mercury, silver, tin, barium, strontium).
D04-B05B Removal of other metals. e.g., removal of metals other of atomic number less than 37 and their compounds with the exception of alkali and alkaline earth metal compounds which code under D04-B07. For example, neutralisation of chromium containing wastes from galvanic production.
D04-B06 Removal of specific organic materials in general, such as specific organic toxins and solvents not covered by D04-B06A, and their related toxins.
D04-B06A Removal of phenolic compounds.
D04-B06B Removal of organic dyes and optical brighteners, including azo dyes.
D04-B06C Removal of surfactants.
D04-B06D Removal of polymers and polymer monomers.
D04-B06E Removing halohydrocarbons from water.
D04-B07 Removal of specific inorganic materials and radioactive materials in general.
D04-B07A Removal of inorganic cyanides or (thio)cyanates, e.g., treating cyanide tailing slurry from gold extraction processes.
D04-B07B Removal of inorganic phosphorous compounds, e.g., removal of hexafluorophosphate by decomposition.
D04-B07C Removal of inorganic nitrogen compounds excluding urea and cyanides but including nitrates, ammonia and inorganic carbamates, e.g., nitration and denitration.
D04-B07D Removal of inorganic sulphur compounds.
D04-B07E Removal of inorganic fluorine compounds.
D04-B10 Removal of sewage sludge from water, e.g., using separation, solidification and treatment of sludge in general.
D04-B10A Dewatering sludge, e.g., drilling muds, sewage treatment sludge, coal slurry and paper pulp waste.
D04-B10B Pyrolysis of sludge, e.g., incineration/burning of dewatered sludge.
D04-A05 Containment of waste to prevent contamination of water, e.g., preventing herbicides form reaching water or enclosing waste in another material.
N07-L01B Water purification; waste water treatment.
N07-L01D Purification, i.e., (hydro)treatment of non-gaseous hydrocarbons.
N07-L02 Removal/treatment of impurities/compounds in general.
N07-L02A Removal/treatment of halogen (compounds).
N07-L02B Removal/treatment of sulfur(compounds).
N07-L02C Removal/treatment of nitrogen (compounds).
N07-L02D Removal/treatment of carbon (compounds).
N07-L02E Removal/treatment of metal (compounds).
N07-L02F Removal/treatment of other impurities/compounds

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