baber/WOPTO huggingface dataset:
Patent AT-523353-A3 (AT)
Title: Dekorative Elemente für Innen- und Aussenwände eines Objekts
Inventor: MARKO HORVACKI
IPC: E04F13/14
Filed: 2021-01-13
Abstract: Das Dekorationselement für die Innen- und Außenwände des Gebäudes gehört in den Bereich des Bauwesens und bezieht sich auf die Herstellung spezieller dreidimensionaler Dekorationselemente. Die Erfindung besteht im Wesentlichen aus einer Tragkonstruktion (A'), die aus drei Trägern (B, C, D) besteht, die mittels erhöhter Teile (8) ineinander gesteckt werden. Die Träger (B, C, D) bestehen aus Metall oder gummiertem Kunststoff, haben die Form eines Rechtecks mir Vorsprüngen und Aussparungen und sind auf der Rückseite der Träger (B, C, D) durch eine mit einer Schutzschicht überzogene Abdeckung (5) fest verbunden, und an der Träger zum Befestigen des Elements (A) an der Wand befestigt sind. Auf der Vorderseite des Trägers (B, C, D) sind dünne Profilbleche (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k, 61, 6m, 6n, 6o) aus Naturstein, Ziegel, Marmor oder Holz, 0,5 bis 3 cm dick, durch Kleber untrennbar verbunden. Dekorative Elemente (A) ist auf der unteren Seite durch einen Deckel (7) verschlossen, an dem Erhöhungen (8) angebracht sind, die in die Hohlräume des Trägers (D) eingesetzt werden, während sie auf der oberen Seite durch einen Deckel (7') verschossen sind, in den Erhöhungen (8) am oberen Teil des Trägers (B) eingesetzt werden. In den Hohlräumen auf der Innenseite der Trägers (B, C, D) werden elektrische Installationen, Batterien, oder Mechanismen untergebracht. Dekorative Elemente (A) können in verschiedenen Formen hergestellt werden, und Bilden, Spiegel usw. können zusätzlich daran aufgehängt werden.
Patent CZ-10499-A3 (CZ)
Inventor: HAVRANEK ZDEN K
IPC: A01G23/099
Filed: 1999-01-13
Abstract: Zařízení k výrobě obalových sazenic, zejména pro tvorbu a
obnovu lesních porostů ajiných rostlinných kultur, sestává
z vnějšího pouzdra (1) s dovnitř vloženou obalovou formou
(3), opatřenou na všech svých plochách otvoiy. Její otevřená
částje přivrácena k uzavíracímu víku, přičemž do vnějšího
pouzdra (1)je přivedeno tlakovzdušné a odsávací potrubí (5).
Uzavírací víko vnějšího pouzdra (1)je tvořeno tlakovou
komorou (6) natěsno příklopnou svou otevřenou částí
k otevřené části vnějšího pouzdra (1). Do tlakové komory (6)
je přivedeno potrubí (20) druhé větve tlakového vzduchu,
přívod (9) vláknité suspenze a přívod (7) půdního substrátu.
Do obalové formy (3)je alternativně vložena kalibrační vložka (22).
Patent SK-27399-A3 (SK)
Title: Steel railroad sleepers
Inventor: HILL KERRY
IPC: E01B9/34
Filed: 1997-08-27
Abstract: A steel railroad sleeper (1) of inverted channel section whose open ends can selectively be closed by end plates (4) detachably connected one to each open end of the sleeper (1) and whose sides incline downwardly and outwardly from the upper rail supporting surface of the sleeper (1), the sleeper (1) being produced by cold forming strip steel. The sleeper (1) may be produced by cold pressing or cold rolling and the end plates (4) may also be produced by cold forming steel strip. In one embodiment the sleeper (1) has a waisted section (8) of reduced width. This waisted section (8) may be positioned generally midway along the length of the sleeper (1). The central section of the sleeper interior may be filled with a material to prevent the ingress of ballast to this central region.
Patent SK-38795-A3 (SK)
Inventor: POSPISIL MIROSLAV
IPC: B65D88/54
Filed: 1995-03-24
Abstract: Zariadenie na dopravu a prípravu odpadových produktov
na spaľovanie pozostáva z vnútornej valcovej nádoby
zužujúcej sa v spodnej Časti. S vnútornou valcovou
nádobou je prostredníctvom horného a spodného dna
spojený plášť vonkajšej valcovej nádoby, vytvárajúci
medzipriestor vybavený vstupnou a výstupnou prípojkou
pre vyhrievacie médium, napr. ohriatu odpadovú vodu.
Horné a spodné dno so stĺpikmi, výstuhami, priečkami a
nosníkmi vytvára rám. V hornom dne je hrdlo s vekom.
Zo spodného dna vyúsťuje potrubie s uzavieracím ventilom
na napojenie na čerpadlo.
Patent SK-41194-A3 (SK)
Title: Device for quick exchange and holding the lateral wall of machine for continuous casting
Inventor: LEGRAND HUGUES
IPC: B22D11/06
Filed: 1994-04-08
Abstract: The continuous casting machine includes two contra-rotating rolls (1, 2) with parallel axes arranged opposite each other, with a certain spacing, and on the axial ends of which two side walls (5a) bear so as to define a casting space (3) between the rolls. The device for rapidly changing the side wall (5a) includes a small barrel (14) comprising fastening means (16) for at least two side walls (5) in positions resulting from one another by means of a rotation through a specific angle about the axis of the small barrel. Means for rotationally displacing the small barrel in steps having an amplitude corresponding to the specific angle of rotation make it possible to displace a replacement side wall (5b) from a standby position to a position occupied by the active side wall (5a) to be replaced.
Patent SK-45498-A3 (SK)
Title: Process for the oxidation hydrocarbons, alcohols and/or ketones
Inventor: COSTANTINI MICHEL
IPC: C07C55/14
Filed: 1998-04-08
Abstract: A process for the oxidation of hydrocarbons, alcohols and/or ketones to carboxylic acids using O2, or an O2-containing gas, in the liquid phase and in a polar protic or aprotic solvent in the presence of a soluble catalyst. This comprises soluble compounds of Co and Cr. The preferred hydrocarbons are 5-12C cycloalkanes, and more preferably cyclohexane. The preferred alcohols and/or ketones are the 5-12C cycloalkanols and cycloalkanones, more preferably cyclohexanol and/or cyclohexanone.
Patent SK-46094-A3 (SK)
Title: Shampoo conditioning agent
Inventor: WELLS ROBERT L
IPC: A61Q5/12
Filed: 1992-10-27
Abstract: Disclosed are hair conditioning shampoo compositions comprising: (a) from about 5 % to about 50 %, by weight, of an anionic surfactant component; (b) from about 0.05 % to about 10 %, by weight, of a dispersed, insoluble, nonvolatile, nonionic silicone hair conditioning agent; (c) from about 0.05 % to about 10 %, by weight, of a water soluble, cationic organic hair conditioning polymer agnet having a cationic charge density of from about 0.9 meq/gram to about 4 meq/gram; (d) from about 0.05 % to about 5 %, by weight, of an organic, nonvolatile, water insoluble, liquid selected from the group consisting of hydrocarbon oils and fatty esters, and mixtures thereof; and (e) an aqueous carrier. The shampoo compositions hereof can provide excellent overall hair conditioning benefits, in conjunction with excellent cleaning performance.
Patent SK-61494-A3 (SK)
Title: Purifying aqueous solutions of amine-n-oxides
Inventor: LAITY PETER R
IPC: B01J49/00
Filed: 1992-12-01
Abstract: PCT No. PCT/GB92/02233 Sec. 371 Date May 9, 1994 Sec. 102(e) Date May 9, 1994 PCT Filed Dec. 1, 1992 PCT Pub. No. WO93/11287 PCT Pub. Date Jun. 10, 1993.Aqueous solutions of an amine N-oxide such as N-methyl morpholine N-oxide used in the manufacture of regenerated cellulose can be purified by passage through a strongly basic anion-exchange resin. The resin is regenerated by treatment with (1) an aqueous solution of a strong inorganic acid such as hydrochloric or sulphuric acid and (2) an aqueous solution of sodium hydroxide.
Patent SK-94998-A3 (SK)
Title: Linear 8a-seco azalides and method for producing thereof
Inventor: LOPOTAR NEVENKA
IPC: C07H17/00
Filed: 1998-07-10
Abstract: The invention relates to novel seco compounds from a class of tylosins represented by a general formula I <CHEM>  wherein   R   stands for H or CH3, R<1>   stands for H, CH3, C1-C3 acyl or aryl sulfonyl, R<2>   stands for H and R<3> stands for NH2 or OH, or R<2> and R<3> together stand for O or NOH, R<4>   stands for H or C1-C3 acyl, and the line - - - -   stands for a double or a single bond,  and to a process for their preparation.   By the reaction of oximation of 4'-demicarosyl-8a-aza-8a-homorelomycin a breaking of lactams occurs and the obtained seco compound can optionally be subjected to reactions of reductive N-alkylation or to a conversion of hydroxyimino group into keto group and then optionally to N- or N,O-acylation, a catalytical hydrogenation of the double bond or a reduction of the ketone or a reduction of the hydroxyimino group into amino group.
Patent SK-96294-A3 (SK)
Title: Connecting of switchboard of satellite signal
Inventor: SPAUN FRIEDRICH
IPC: H03H7/46
Filed: 1994-08-11
Abstract: The distribution device allows a received satellite signal to be supplied to a number of subscribers (T1...Tn) using distributor elements provided by a series circuit of stripline directional couplers (SR1...SKn). Each of these has an input gate and two output gates respectively coupled to a subscriber socket and to the input gate of the following coupler, the first coupler receiving the satellite signal at its input gate and the second output gate of the last coupler connected to earth via a termination resistance. Pref. the directional couplers each have a coupling factor which increases in dependence on the attenuation, all the couplers pref. being supported by a common circuit board (LP).
Patent SK-96799-A3 (SK)
Title: Absorbent structure having improved absorption properties
Inventor: GELLERSTEDT FREDRIK
IPC: A61F13/534
Filed: 1998-01-20
Abstract: An absorbent, porous structure (4), intended for use in an absorbent article, wherein the structure (4) exhibits a first region (19), primarily consisting of a first material, which stands in direct connection with a second region (20), primarily consisting of a second material. The receding wetting angle  theta r is larger for the first material than for the second material, whereby liquid transport between the two regions (19, 20) takes place in a direction from the first region (19) to the second region (20), at least when the porous structure (4) is wet.
Patent CS-355191-A3 (CS)
Title: Plant for loose material drying
Inventor: KARLS DIETER
IPC: F26B21/12
Filed: 1991-11-22
Abstract: The essentially cylindrical bulk-material container (10) has an air inlet with a blow-in pipe (24) for introducing heated dry air into bulk material (15) situated in the container. At a lower end which tapers in a funnel-shaped manner, the container has a bulk-material removal device (23) with, connected thereto, a conveying line (14), via which the bulk material is guided to a corresponding further processing machine. The bulk material is supplied to the container via a funnel-shaped filling piece (25). In the cylindrical region of the container, a temperature-measuring device (21) is arranged, which detects the temperature of the bulk material. As soon as this temperature falls below a given limit value (tg), either a warning signal is given by a warning device (26) or the removal of the bulk material is interrupted or reduced by actuating a closure device (13). 
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Patent CZ-378092-A3 (CZ)
Title: Lighting system for lighting fittings, projection and enlarging apparatus
Inventor: HANECKA MIROSLAV
IPC: G02B9/00
Filed: 1992-12-21
Abstract: PCT No. PCT/CZ93/00031 Sec. 371 Date Dec. 5, 1994 Sec. 102(e) Date Dec. 5, 1994 PCT Filed Dec. 20, 1993 PCT Pub. No. WO94/15143 PCT Pub. Date Jul. 7, 1994The invention concerns a lighting system for spotlights, for automobile headlights, for medical and industrial spotlights. It consists of the light source (1), particularly the halogen light bulb, auxiliary mirror (2), the main mirror (3), consisting of a system of concave spherical mirrors (31), and a raster lens (4). All of these elements lie on the main optical axis (0). If a system of condensers (5) and an objective (7) is added to the basic part, the system can be used for cinema projectors and enlarging apparatuses.
Patent CZ-103898-A3 (CZ)
Title: Detergent for automatic dish washing machines
Inventor: ANGEVAARE PETRUS ADRIANUS J M
IPC: C11D1/14
Filed: 1996-08-20
Abstract: An automatic dishwashing detergent composition is described which comprises 0.01 to 1.0 % of a fatty acid having from 12 to 22, preferably from 16 to 18, carbon atoms in the acyl radical and are preferably unsaturated; 0.1 to 2 % of a carrier containing a ketone which has at least 25 carbon atoms; 0.5 to 40 % of a surfactant; 0.1 to 10 weight % of a proteolytic enzyme; 1 to 30 weight % of a bleaching agent selected from the group of a peroxygen or hypohalite agent; and 1 to 75 % of a builder providing a composition having a pH of less than about 11. Specifically, the detergent composition must have a weight ratio of long-chain ketone/carrier to fatty acid of 5:1 to 1:1, preferably from 4:1 to 2:1. A method of using the composition is also described.
Patent CZ-119399-A3 (CZ)
Title: DERIVATIVES OF 1H-PYRIDO[3,4-b]INDOLE-4-CARBOXAMIDE, PROCESS OF THEIR PREPARATION AND THEIR USE IN THERAPY
Inventor: EVANNO YANNICK
IPC: A61P25/22
Filed: 1997-10-03
Abstract: The invention concerns compounds of general formula (I) in which X represents hydrogen or an halogen or an alkyl, alkoxy, trifluoromethyl or phenylmethoxy group, R1 represents hydrogen or an alkyl, cyclopropyl or phenylmethyl group, R2 represents either an alkyl group optionally substituted, or a phenylalkyl group optionally substituted, or a cyclohexylmethyl group, or a thienylmethyl group, or a pyridinylmethyl group, or a phenyl group optionally substituted, or a pyridinyl group, or a 5-methyl-1,2-oxazolyl group, or a 5-methyl-1,3,4-thiadiazolylgroup, or a naphtalenyl group, R3 and R4 each represent hydrogen or an alkyl, 2-methoxyethyl, hydroxyalkyl, carboxyalkyl, alkoxycarbonylalkyl or phenylalkyl group, or form together, with the nitrogen atom which carries them, either a pyrrolidinyl group optionally substituted or a piperidinyl group, or a morpholinyl group, or a 4-methylpiperazinyl group, or an azetidinyl group, or a thiazolidinyl group, and the bond between the carbon atoms in positions 3 and 4 is simple or double. The invention is applicable in therapeutics.
Patent CZ-175796-A3 (CZ)
Title: Novel demethoxy derivatives of rapamycin, process of their preparation and pharmaceutical composition containing thereof
Inventor: COTTENS SYLVAIN DR
IPC: A61K31/436
Filed: 1994-12-16
Abstract: PCT No. PCT/EP94/04191 Sec. 371 Date Jun. 14, 1996 Sec. 102(e) Date Jun. 14, 1996 PCT Filed Dec. 16, 1994 PCT Pub. No. WO95/16691 PCT Pub. Date Jun. 22, 1995Novel demethoxy derivatives of rapamycin are found to have pharmaceutical utility, particularly as an immunosuppressants.
Patent CZ-201514-A3 (CZ)
Inventor: ČEŠKA JIŘÍ
IPC: F02M27/04
Filed: 2015-01-12
Abstract: Zařízení obsahuje kombinaci alespoň dvou elektronových aktivátorů se soustavou anizotropních feritových magnetů. V palivovém okruhu je uspořádán elektronový aktivátor (20), v jehož tělese (1) jsou za sebou v osovém směru střídavě uspořádány toroidní a válcové a/nebo hranolovité magnety (2 a 3). Magnety (2 a 3) jsou uspořádány vždy souhlasnými póly proti sobě. Kapalné médium proudí středem toroidních magnetů (2) a obtokem válcových a/nebo hranolovitých magnetů (3). V okruhu sání vzduchu je uspořádán elektronový aktivátor (21), kde průtok média je jak středem toroidních magnetů (2), tak současným obtokem toroidních a válcových a/nebo hranolovitých magnetů (2 a 3).
Patent CZ-203994-A3 (CZ)
Title: 3beta-alkenylpenam derivatives, process of their preparation, medicaments based thereon and intermediates for producing such derivatives
Inventor: HUBSCHWERIEN CHRISTIAN
IPC: A61P31/04
Filed: 1994-08-23
Abstract: The present invention relates to penem derivatives, especially to 3 beta -alkenyl-penem derivatives of the general formula <IMAGE>  wherein   one of R<1> and R<2> is -COR<4>, -CN, -CH2R<5>, halogen, -CH=CHR<6> or Q and the other is hydrogen or lower alkyl or both together are a gamma -lactam ring, R<3> is hydrogen, lower alkyl, arylalkyl, allyl or a radical which can be removed in vivo, R<4> is hydrogen, lower alkyl, lower alkoxy, benzyloxy, amino, lower alkylamino or lower alkyl-lower alkoxyamino, R<5> is hydroxyl, -OCONHR<7>, -OCONH2 or a five- or six-membered heteroaromatic ring containing N, S and/or O and linked via a nitrogen atom,   R<6> is -CN or -CHO,   R<7> is COCH2Cl, Q is a five- or six-membered heteroaromatic ring containing N, S and/or O and   n is 0, 1 or 2,  and the pharmaceutically tolerable salts of these compounds. These compounds are good  beta -lactamase inhibitors. They can be used, if appropriate mixed with a  beta -lactam antibiotic, for the prevention or for the treatment of bacterial infections.
Patent CZ-213198-A3 (CZ)
Title: Apparatus for storing dough
Inventor: DITTRICH BERND
IPC: A21B3/07
Filed: 1997-11-14
Abstract: An installation is disclosed for storing dough products for a limited period of time in several superimposed planes (6) in a baking chamber (1). The dough products lie on flat, tray-shaped palettes, in particular rectangular palettes (2). The palettes in each plane (6) are arranged close to each other, so that when a palette (2) located in the first cabinet section nearest to the loading side is moved, all remaining palettes (2) located on the same plane of the cabinet are also moved.
Patent CZ-224298-A3 (CZ)
Title: Use of copolymer with surface-active structure as a dispersant and/or auxiliary additive for grinding
Inventor: EGRAZ JEAN-BERNARD
IPC: C09C3/00
Filed: 1998-07-16
Abstract: Use of a copolymer as a dispersion and/or crushing agent for aqueous suspension of mineral materials, namely those materials with hydrophilic or hydrophobic properties; the copolymer comprising: (a) (i) monoacids e.g. (meth)acrylic, (iso)crotonic, and cinnamic; (ii) diacids e.g. fumaric and maleic; (iii) acid anhydrides e.g. maleic anhydride; and (iv) diacid hemiesters such as 1-4C monoesters of maleic acid; (b) optionally at least one unsaturated monomer with a sulphonic group e.g. sodium methallyl-sulphonate or styrene sulphonic acid; or a phosphoric group e.g. propylene glycol (meth)acrylate phosphate; (c) optionally at least one unsaturated monomer without a carboxylic group e.g. (meth)acrylic esters, (meth)acrylonitrile, styrene, (meth)acrylamide; and (d) at least one unsaturated oxyalkyl monomer with terminal hydrophobic chain of general formula: R-Ä-((CH2-CH(R1)-O)m-CH2-CH2-O)n-CH2-CH(R2)-OpÜ< SB>q-R' (where: m, n, p ≤ 100; q is number such that 0 ≤ q x (n + m + p) ≤ 100; R1, R2 = H, methyl, or ethyl; R = polymerisable unsaturated radical belonging to group of esters including (meth)acrylic, crotonic and vinylphthalic, as well as unsaturated urethanes such as (meth)acrylurethane, or allyl-urethane; and R' = hydrophobic radical such as tristyrylphenyl, or 8-30C alkyl, aryl, alkylaryl, arylalkyl; or, when R = urethane, R' = 8C dialkyl, or, preferably, when R = unsaturated polymerisable radical, R' ≥ 22C dialkyl amine; total of (a)+(b)+(c)+(d) = 100 pts.; and suspension has specific viscosity ≤ 25.)
Patent CZ-252195-A3 (CZ)
Title: Stabilized bituminous compositions and process for preparing thereof
Inventor: LIANG ZHI-ZHONG
IPC: C08L95/00
Filed: 1994-03-28
Abstract: PCT No. PCT/CA94/00174 Sec. 371 Date Aug. 13, 1996 Sec. 102(e) Date Aug. 13, 1996 PCT Filed Mar. 28, 1994 PCT Pub. No. WO94/22957 PCT Pub. Date Oct. 13, 1994Two or more different polymeric materials are stably incorporated into bitumen by effecting steric stabilization of a polyolefin, such as polyethylene, and by dispersing the other polymer, such as a styrene-butadiene-styrene copolymer, an ethylene-vinyl acetate copolymer or an EPDM copolymer in the stabilized polyethylene-bitumen composition. The ability to incorporate different polymeric materials in bitumen permits desirable modifications to the properties of the composition to be effected. In addition, different properties can be attained by modifying processing parameters.
Patent CZ-253196-A3 (CZ)
Title: Wheel suspension for rigid axles of vehicles, particularly of utility vehicles
Inventor: BUHL REINHARD
IPC: B60G21/05
Filed: 1996-05-29
Abstract: The axle mounting is for a rigid axle of a commercial vehicle. The multiple linkage and the stabilisation device are configured as a four-point linkage (4) subject to torsional loading and integrating both functions. The four-point linkage is connected to the vehicle body on one side and to the vehicle axle (1) on the other side, via two transverse linkages (5-8) a distance apart from each other. The four-point linkage is connected to the vehicle axle from above.
Patent CZ-278296-A3 (CZ)
Title: Insulation lintel
Inventor: KUNSTMANN MANFRED
IPC: E04C3/20
Filed: 1996-09-23
Abstract: The lintel for window and door openings is made of various materials, including hardened materials and has two grooves running parallel to its length and facing the brickwork. One groove is filled with light concrete or other building material while the other groove is filled with a thermal insulating material (8). The size and depth of the grooves can be selected to suit the particular purpose ie. width of brickwork and amount of thermal insulation required. The width can be chosen to allow for cladding layers on either or both sides of the lintel.
Patent CZ-284798-A3 (CZ)
Title: Cosmetic preparation
Inventor: HEIDE BARBARA
IPC: A61K8/06
Filed: 1997-11-29
Abstract: Two-phase skin care agents, specially two-phase skin creams, comprising two separated plastic flowing constituents packed in a tube which can be pressed out of the tube in the form of parallel, concentric or striped strips. Said agents can be advantageously produced when the first component has a continuous aqueous phase and the second component has a continuous oil phase. Preferably, both phases are differently colored or pigmented. Preferably, an aqueous gel or an oil in water emulsion are used as a continuous aqueous phase, and a thickened oil or water-in-oil emulsion is used as a continuous oil phase.                                     00000
Patent CZ-297197-A3 (CZ)
Title: Process for preparing esters of 3-pentenoic acid by carbonylation of alkoxybutenes
Inventor: LANGGUTH ERNST DR
IPC: C07C69/533
Filed: 1996-03-15
Abstract: PCT No. PCT/EP96/01123 Sec. 371 Date Sep. 16, 1997 Sec. 102(e) Date Sep. 16, 1997 PCT Filed Mar. 15, 1996 PCT Pub. No. WO96/29300 PCT Pub. Date Sep. 26, 19963-Pentenoic esters are prepared by carbonylation of alkoxybutenes in the presence of a catalyst and a solvent at elevated temperature and elevated pressure, by reacting at least one C1-C10-alkoxybutene in which the alkoxy group is in the allyl position relative to the double bond with carbon monoxide at from 60 to 140 DEG  C. and a carbon monoxide partial pressure in the range from 3 to 30 MPa in the presence of a catalyst based on palladium.
Patent CZ-311694-A3 (CZ)
Title: Process and apparatus for treatment of waste water or sewage containing nitrogenous compounds
Inventor: MULDER RONALD
IPC: C02F3/22
Filed: 1993-06-10
Abstract: PCT No. PCT/NL93/00125 Sec. 371 Date Dec. 12, 1994 Sec. 102(e) Date Dec. 12, 1994 PCT Filed Jun. 10, 1993 PCT Pub. No. WO93/25485 PCT Pub. Date Dec. 23, 1993.A system for purifying nitrogenous waste water by biological nitrification and denitrification, comprises at least two essentially separated reactor chambers, a liquid supply (4) and a liquid discharge (5). The first, aerated reactor chamber (1) is provided at the top with an overflow to the second, oxygen-depleted reactor chamber (2). The oxygen-depleted reactor chamber (2) is divided at the top into a degassing chamber (7) and a settling chamber (8) having an overflow (9) to the liquid discharge. The first reactor chamber is provided with an air supply (11, 18) and an air discharge (12) located above the supply. The first reactor chamber may be partly divided into a riser (14) and a downcomer (15) which allow, as a result of the air supply, mass circulation to take place in the aerated reactor chamber. According to the process, waste water with bacterial sludge on a carrier circulates alternately through the oxygen-depleted and the aerated reactor chambers, whereafter it is separated from the sludge and the sludge is returned to the reactor.