NL54632C - - Google Patents

Info

Publication number
NL54632C
NL54632C NL54632DA NL54632C NL 54632 C NL54632 C NL 54632C NL 54632D A NL54632D A NL 54632DA NL 54632 C NL54632 C NL 54632C
Authority
NL
Netherlands
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL54632C publication Critical patent/NL54632C/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F212/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
    • C08F212/02Monomers containing only one unsaturated aliphatic radical
    • C08F212/04Monomers containing only one unsaturated aliphatic radical containing one ring
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F210/00Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/04Monomers containing three or four carbon atoms
    • C08F210/08Butenes
    • C08F210/10Isobutene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F244/00Coumarone-indene copolymers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04Elements
    • C10M2201/041Carbon; Graphite; Carbon black
    • C10M2201/042Carbon; Graphite; Carbon black halogenated, i.e. graphite fluoride
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06Metal compounds
    • C10M2201/062Oxides; Hydroxides; Carbonates or bicarbonates
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026Butene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10Carboxylix acids; Neutral salts thereof
    • C10M2207/12Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10Carboxylix acids; Neutral salts thereof
    • C10M2207/12Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/04Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C10M2209/062Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/12Polysaccharides, e.g. cellulose, biopolymers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00Metal present as such or in compounds
    • C10N2010/06Groups 3 or 13
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00Metal present as such or in compounds
    • C10N2010/08Groups 4 or 14
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/14Electric or magnetic purposes
    • C10N2040/16Dielectric; Insulating oil or insulators
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/14Electric or magnetic purposes
    • C10N2040/17Electric or magnetic purposes for electric contacts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
NL54632D 1937-07-17 NL54632C (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US154199A US2274749A (en) 1937-07-17 1937-07-17 Hydrocarbon copolymer and method of preparing same

Publications (1)

Publication Number Publication Date
NL54632C true NL54632C (en:Method)

Family

ID=22550396

Family Applications (1)

Application Number Title Priority Date Filing Date
NL54632D NL54632C (en:Method) 1937-07-17

Country Status (2)

Country Link
US (1) US2274749A (en:Method)
NL (1) NL54632C (en:Method)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441553A (en) * 1942-08-03 1948-05-18 Dow Chemical Co Liquid organic fumigant containing polystyrene
US2433851A (en) * 1942-11-13 1948-01-06 Standard Oil Dev Co Pour point depressant
US2422278A (en) * 1943-12-01 1947-06-17 Standard Oil Dev Co Lubricating oil composition
US2491526A (en) * 1944-07-07 1949-12-20 Standard Oil Dev Co Modified copolymer compositions and manufacture and use thereof
US2580050A (en) * 1944-10-06 1951-12-25 Standard Oil Dev Co Tough styrene-olefin copolymers containing two to ten per cent of wax
BE462350A (en:Method) * 1944-10-06 1900-01-01 Standard Oil Dev Co
US2516741A (en) * 1944-10-12 1950-07-25 Standard Oil Dev Co Composition of brittle resin and styrene-isobutylene copolymer
US2468534A (en) * 1944-11-23 1949-04-26 Standard Oil Dev Co Tough, flexible, polyamide resinhydrocarbon resin compositions
US2595911A (en) * 1944-12-29 1952-05-06 Standard Oil Dev Co Paraffin wax-styrene isobutylene copolymer composition
US2572959A (en) * 1945-03-24 1951-10-30 Standard Oil Dev Co Packaging tacky isobutylene-diolefin rubber in film of compatible styrene-isobutylene copolymer
US2500082A (en) * 1945-04-04 1950-03-07 Standard Oil Dev Co Acylated derivatives of high molecular weight copolymers
US2545522A (en) * 1945-04-04 1951-03-20 Standard Oil Dev Co Olefin-dihydronaphthalene copolymers
US2539824A (en) * 1945-04-20 1951-01-30 Standard Oil Dev Co Nitration derivatives of hydrocarbon copolymers
US2472495A (en) * 1945-05-03 1949-06-07 Standard Oil Dev Co Condensation product of a polyhalogenated aliphatic hydrocarbon and a copolymer of a polymerizable cyclic compound and an unsaturated aliphatic hydrocarbon
US2638445A (en) * 1945-05-05 1953-05-12 Standard Oil Dev Co Sulfonated high molecular weight styrene-olefin copolymers
US2446536A (en) * 1945-05-12 1948-08-10 Standard Oil Dev Co Treatment of styrene-isobutylene polymer films and resultant product
US2525071A (en) * 1945-11-30 1950-10-10 Standard Oil Dev Co Laminated sheet material and compositions
US2631139A (en) * 1945-12-04 1953-03-10 Standard Oil Dev Co Diolefin copolymer rubber plasticized with tough styrene-isobutylene copolymers
US2519092A (en) * 1946-03-12 1950-08-15 Standard Oil Dev Co Compositions of different styreneisobutylene copolymers
US2609359A (en) * 1946-03-21 1952-09-02 Standard Oil Dev Co Copolymers of a polyene, an alkene, and an olefinically unsaturated aromatic hydrocarbon
US2442643A (en) * 1946-04-02 1948-06-01 California Research Corp Process of activating polymerization of hydrocarbons
US2442644A (en) * 1946-04-02 1948-06-01 California Research Corp Method of controlling viscosity of hydrocarbon polymers
US2442645A (en) * 1946-04-02 1948-06-01 California Research Corp Polymerization of unsaturated hydrocarbons
US2537130A (en) * 1946-08-24 1951-01-09 Standard Oil Dev Co Process of recovering an isobutylene copolymer
US2554245A (en) * 1946-09-17 1951-05-22 Standard Oil Dev Co Complex friedel-crafts catalyst containing aromatic hydrocarbons
US2610962A (en) * 1946-12-03 1952-09-16 Dow Chemical Co Styrene copolymer mixtures
US2504779A (en) * 1947-10-18 1950-04-18 Standard Oil Dev Co Lubricating grease
US2491055A (en) * 1947-10-25 1949-12-13 Standard Oil Dev Co Grease compositions
US2491054A (en) * 1947-10-25 1949-12-13 Standard Oil Dev Co Lubricating grease
US2603627A (en) * 1948-03-06 1952-07-15 Standard Oil Dev Co Lubricating oil additive materials prepared by condensing alkyl halides with haloaromatic-aliphatic hydrocarbon copolymers
US2522455A (en) * 1948-06-24 1950-09-12 Standard Oil Dev Co Mineral oil containing a copolymer of an aliphatic monoolefin and dihydronaphthalene
BE638356A (en:Method) * 1948-10-29
US2618624A (en) * 1949-02-15 1952-11-18 Standard Oil Dev Co Composition of styrene and isobutylene polymers
US2572184A (en) * 1949-02-24 1951-10-23 United Shoe Machinery Corp Unsupported box toe and counter materials
US2658872A (en) * 1949-03-05 1953-11-10 Standard Oil Dev Co Modified copolymers and preparation and uses thereof
US2530099A (en) * 1949-04-12 1950-11-14 Us Rubber Co Adhesive composition and structure embodying same
US2611760A (en) * 1949-05-18 1952-09-23 Universal Oil Prod Co Condensation product of formaldehyde with a copolymer of a vinyl aromatic compound and an aliphatic mono-olefin and process of making same
US2683138A (en) * 1949-08-20 1954-07-06 Standard Oil Dev Co Propylene-isoolefin-cyclic olefin tripolymer
US2643993A (en) * 1949-09-13 1953-06-30 Standard Oil Dev Co Continuous process for copolymerizing styrene and isobutylene
US2641595A (en) * 1949-12-31 1953-06-09 Standard Oil Dev Co Production of clear transparent polymers
US2610948A (en) * 1950-03-23 1952-09-16 Standard Oil Dev Co Lubricating compositions
US2656340A (en) * 1950-07-27 1953-10-20 Standard Oil Dev Co Aromatic-alkene copolymers of less than 5 per cent aromatic content
US2731450A (en) * 1951-11-01 1956-01-17 Exxon Research Engineering Co Thermosetting resins
US2752326A (en) * 1952-03-29 1956-06-26 Exxon Research Engineering Co Oxycresyl camphene as a light stabilizer for copolymer of isobutylene and styrene
US2845359A (en) * 1953-12-29 1958-07-29 Exxon Research Engineering Co Asphalt composition
US2910458A (en) * 1954-06-28 1959-10-27 Exxon Research Engineering Co Tripolymer of styrene, c tertiary and non-tertiary monoolefin
US2814595A (en) * 1955-03-28 1957-11-26 Exxon Research Engineering Co Open gear lubricants
US2876199A (en) * 1955-04-22 1959-03-03 Exxon Research Engineering Co Lubricants
US2935486A (en) * 1955-07-05 1960-05-03 Exxon Research Engineering Co Asphalt, isobutylene-styrene copolymer, hydrocarbon oil adhesive for laminates
US2917485A (en) * 1955-10-05 1959-12-15 Exxon Research Engineering Co Composition of high molecular weight polyisobutylene and low molecular weight styrene-isobutylene resinous copolymers
US2830973A (en) * 1955-12-09 1958-04-15 Exxon Research Engineering Co Preparation of olefin-aromatic copolymers with cross-linking agents
US2857339A (en) * 1955-12-28 1958-10-21 Monsanto Chemicals Steeping method for preparing foamable styrene polymer particles containing rubbery isobutylene polymer
US2795571A (en) * 1956-04-17 1957-06-11 Du Pont Catalytic process for polymerizing trioxane to tough, high molecular weight polyoxymethylene
US2866780A (en) * 1957-03-06 1958-12-30 Exxon Research Engineering Co Production of low ash resin
US3091601A (en) * 1957-09-20 1963-05-28 Union Carbide Corp Olefinic copolymers
US3183210A (en) * 1959-11-06 1965-05-11 Zh Nihon Kagaku Seni Kenkyusho Polymerization of aldehyde by organometallic compound
NL263451A (en:Method) * 1960-04-23
BE603088A (en:Method) * 1960-04-26
NL284847A (en:Method) * 1961-10-30
US3220989A (en) * 1962-07-24 1965-11-30 Standard Oil Co Nuclear phosphonated polystyrene polymer
US3506616A (en) * 1965-01-26 1970-04-14 Ethyl Corp Polyoxymethylene interpolymers
US3422072A (en) * 1966-01-26 1969-01-14 Borden Co Polymerization of aldehydes in the presence of anhydrous polar solvents and alkali metal alkoxide catalysts
US3500603A (en) * 1967-01-03 1970-03-17 Protective Treatments Self-supporting,nonload-bearing resilient tape sealant
US3403134A (en) * 1967-07-20 1968-09-24 British Industrial Plastics Process for preparing copolymers of trioxane with alicyclic olefinically unsaturated hydrocarbons and resultant product
AU439444B2 (en) * 1968-05-10 1973-08-16 Velsicol Chemical Corporation Copolymers and perparational method therefor
JPS50760B1 (en:Method) * 1971-07-01 1975-01-11

Also Published As

Publication number Publication date
US2274749A (en) 1942-03-03

Similar Documents

Publication Publication Date Title
BE420085R (en:Method)
NL50110C (en:Method)
BE417149A (en:Method)
BE235779A (en:Method)
BE386746A (en:Method)
BE412505A (en:Method)
BE413076A (en:Method)
NL50959C (en:Method)
BE417582A (en:Method)
BE418783A (en:Method)
BE419342A (en:Method)
BE419443A (en:Method)
BE419523A (en:Method)
BE419588A (en:Method)
BE419666A (en:Method)
BE419783A (en:Method)
BE419812A (en:Method)
BE419835A (en:Method)
BE419889A (en:Method)
NL51897C (en:Method)
BE420057A (en:Method)
BE420089A (en:Method)
BE420107A (en:Method)
BE420365A (en:Method)
BE420383A (en:Method)