baber/WOPTO huggingface dataset:
Patent ES-2613851-B1 (ES)
Title: Dispositivo de absorción de par para cajas multiplicadoras de aerogeneradores
Inventor: DIAZ BERRADE DAVID
IPC: F16H57/028
Filed: 2015-11-26
Granted: 2018-03-15
Abstract: Dispositivo de absorción de par para cajas multiplicadoras de aerogeneradores, que comprende una pareja de brazos de par (1), configurados para acoplarse por un lado a una pareja de respectivos salientes (2) pertenecientes a una caja multiplicadora (9), y por otro lado a un bastidor fijo (6). Donde cada dispositivo comprende al menos una pareja de resaltes (4, 5), que abrazan exteriormente al respectivo saliente (2); donde un primer elemento amortiguador (7) se encuentra ubicado entre ambos resaltes (4, 5) y entrando en contacto tanto con el dispositivo de absorción de par (1), como con dicho saliente (2) de la caja multiplicadora (9); y donde un segundo amortiguador (8) se encuentra ubicado entre ambos resaltes (4, 5) y entrando en contacto tanto con el dispositivo de absorción de par (1) como con el bastidor fijo (6), configurando una unión amortiguada entre sendas entidades.
Patent ES-2536151-B1 (ES)
Title: Semirremolques y plataformas con ejes autopropulsados para transportes pesados y especiales
Inventor: SERRANO PEREZ RAFAEL
IPC: B62D59/04
Filed: 2015-01-25
Granted: 2015-11-20
Abstract: El objeto de esta invención son semirremolques y plataformas con ejes autopropulsados para transportes pesados y especiales, comprendiendo al menos uno de los ejes (1) un par de motores eléctricos (2) convenientemente dimensionados, insertados en su interior tunelizado, debidamente amarrados por unos medios de anclaje (4), centralmente situados y siendo ambos motores eléctricos (2) independientes uno de otro, trabajando de forma simultánea a la par o estando los dos desactivados, estando dicho par de motores eléctricos (2) conectados, vía wifi, por cableado o por otros medios con una central electrónica situada en la unidad tractora, de modo que, al ser activados transmiten su movimiento de giro al plato o disco (5) que a su vez queda asociado, mediante espárragos (6), al conjunto llanta y ruedas (C). Este par o pares de motores eléctricos (2), que incorporan baterías de litio y sistemas de recarga, giran todos de manera coordinada a la misma velocidad regulados por la central electrónica de la unidad tractora.
Patent ES-2598903-B1 (ES)
Title: Procedimiento para la fabricación de hielo y equipo para llevarlo a cabo
Inventor: POZO LEAL JOSE
IPC: F25C1/10
Filed: 2015-07-29
Granted: 2017-12-12
Abstract: Procedimiento para la fabricación de hielo y equipo para llevarlo a cabo.#Es objeto de la invención un proceso para la fabricación de hielo en continuo caracterizado porque comprende: (a) preparar una mezcla de agua potable y al menos un aditivo alimentario, siendo el agua potable sometida a un proceso de pasteurización de manera previa o posterior a la adición del aditivo alimentario; (b) enfriar la mezcla obtenida en la etapa anterior, siendo introducida a continuación en al menos un molde mediante un proceso de dosificación; (c) dicho molde es conducido a continuación al interior de un túnel de congelación, donde la mezcla es enfriada hasta congelar en forma de hielo; (d) finalmente, el hielo obtenido en el túnel de congelación es extraído del molde. Es asimismo objeto de la invención el equipo para llevar a cabo dicho proceso.
Patent HR-P20050280-B1 (HR)
Inventor: NAKATANI MANABU
IPC: A61K9/24
Filed: 2005-03-23
Abstract: Izum se odnosi na nove krute farmaceutske sastave koji sadrže angiotensin II receptor antagonist telmisartan, bazično sredstvo, tenzid ili emulgator i sredstvo za razrjeđivanje koje je topivo u vodi, npr. u obliku granula ili u obliku praha, kao također i na krute oralne formulacije gotove za upotrebu/gutanje, npr. kapsule i tablete izrađene iz spomenutih farmaceutskih sastava, i na postupke za proizvodnju spomenutih sastava i formulacija primjenom postupaka granuliranja u protočnom sloju ili postupka sušenja raspršivanjem.
Patent JO-3553-B1 (JO)
Title: Modulation of tumor immunity
Inventor: DANLING GU
IPC: C07K16/28
Filed: 2014-08-20
Granted: 2020-07-05
Abstract: Methods of treating proliferative disorders are described. In particular, combination treatment with a GITR agonist and a PD-1 antagonist are provided.
Patent KR-800000323-B1 (KR)
Title: Casting apparatus
Inventor: ISHIHARA DOKUJIRO
Filed: 1974-09-24
Granted: 1980-04-24
Abstract: In a casting appts. designed to let air out of a mold cavity through the main gas vent communicated with plural branched gas vents at the back of the mold cavity, the mold is completed by stacking plural plate-shaped mold members (5,5') with partial cavities(4) forming the complete mold cavity(6).  The branched gas vent(7) is formed at the suitable position of the contact surface of the mold members.  A discharge pump which is mounted on the vent pipe(10) communicated with the main gas vent(9) lets air out of the mold cavity when pouring a molten metal into the mold cavity.
Patent KR-800000284-B1 (KR)
Title: Heat-resistance molding resin composition
Inventor: ASO DETSUO
IPC: C08G73/10
Filed: 1975-12-26
Granted: 1980-04-10
Abstract: Prepolymers prepd.  from N,N'-bismaleimide or a similar bismaleimide and a diamine such as  ! 4,4'-diaminophenylmethane were mixed with a diallyl phthalate prepolymer, t-butylbenzoate, glass fibers, powd. SiO2, Zn stearate and carbon black. In some cases it is mixed with other vinyl monomer and used In thermosetting compds. which gives resins with a good heat resistance and mech. properties at high temp.
Patent KR-800001308-B1 (KR)
Title: Method of removing acetylene from anhydrous-hydrogen chloride
Inventor: BUSBY D
IPC: B01D53/34
Filed: 1977-06-30
Granted: 1980-10-27
Abstract: Small amts. of C2H2 in anhyd. HCl were decreased by heating the gas to 300-500≰C in the presence of O, the O being in molar excess to that of the C2H2 present. In the process>=99% of the C2H2 was converted to vinyl chloride, CO, and other oxidn. and chlorinated products with minimal formation of Cl which is an undesirable byproduct. Thus, HCl gas contg. 0.17% C2H2 was mixed with air(O-HCl ratio 0.042:1) at 4.4kg/cm2 and 25≰C. The reaction temp. was 450≰C and the contact time 0.8 s. The product contained 0.0002% C2H2.
Patent KR-820001878-B1 (KR)
Title: Fluid supplying and discharging apparatus for shuttleless weaving loom
Inventor: TANAKA SHIGENORI
IPC: D03D47/30
Filed: 1977-09-07
Granted: 1982-10-16
Abstract: This invention relates to a fluid supplying and discharging apparatus for use in a weaving loom of the shuttleless type, comprising a source of fluid under pressure, fluid discharge means communicable with the fluid source and operative to eject a jet stream of the fluid into a weaving shed formed by warp yarns in the loom
Patent KR-820000237-B1 (KR)
Title: Reinforced pipe cross fitting
Inventor: GEORGE HENRY HOWARD
IPC: F16L41/00
Filed: 1978-04-26
Granted: 1982-03-08
Abstract: A fitting has four branches(15,16,17,18) in pairs with their axes(12,14) coplanar and mutually at right angles.  A rigid reinforcing plate(29,30) is coplanar with or parallel with the plane of the axes & extends to the ends of each branch.  The branch ends are e.g. bevelled for butt welding to similarly sized tubular members of an offshore platform.  The plate is pref.rigidly attached to each branch & includes a plate element parallel with the plane & extending into the branches on one axis, & a second similar element for the other branches with the elements joined rigidly to each other, optionally with a third parallel plate when second & third plates are attached to the two branches on the second axis.
Patent KR-820000757-B1 (KR)
Title: Method for improving the efficiency of internal combustion engines
Inventor: CURTIL R
IPC: F02D13/00
Filed: 1978-05-26
Granted: 1982-05-04
Abstract: The compression ratio of an I.C. engine is controlled to improve its efficiency.  The engine is fed by an inlet manifold(3).  At high loads, the compressed gas from the cylinder is returned to the manifold by keeping a valve(5) open, thus reducing cycle peak temperatures.  At light loads, part of the compressed gas is allowed to leave and is trapped in the inlet pipes because a valve(11) is closed.  This provides a reservoir of compressed gases to reintroduce during the exhaust stroke to assist scavenging.
Patent KR-800000496-B1 (KR)
Title: Manufacturing method of alkaline battery (zn-ag)
Inventor: PARK JAE KYU
IPC: H01M6/00
Filed: 1978-10-26
Granted: 1980-06-04
Abstract: The dry cell which can obtain contant closed-cct. voltage and high discharge capacity per unit capacity is disclosed. Separators(6,7,8) are laminated and fixed between the main and the subactive materials to smooth ion exchange. A packing(3) inserted into the junction part of outer housing(11) and cap(I) is attached to the sawtooth-shaped face to prevent from leakaging electroyte of the dry cell.
Patent KR-820002091-B1 (KR)
Title: Television receiver
Inventor: YASHIMA ISAO
IPC: H04N3/22
Filed: 1979-04-24
Granted: 1982-11-04
Abstract: This invention's circuit suppresses the increase of the horizontal deflection power to obtain a magnified picture.  One condensor is connected in series with horizontal deflection coil to correct the S distortion of deflection signal.  Another condensor is connected or removed in accordance with the magnifying operation to cancel or establish the correcting function of the S distortion.
Patent KR-830000386-B1 (KR)
Title: 주사용 인삼 사포닌 정제방법
Filed: 1980-01-15
Granted: 1983-03-05
Abstract: 내용 없음.
Patent KR-800000384-B1 (KR)
Inventor: SUMIMODO S
IPC: C07D261/14
Filed: 1980-01-21
Granted: 1980-05-12
Abstract: 내용 없음.
Patent KR-850000823-B1 (KR)
Title: Method for producing molten iron from iron oxide with coal & oxygen
Inventor: SCARELETT JOHN C
IPC: C21B13/06
Filed: 1980-06-27
Granted: 1985-06-15
Abstract: Production of molten iron (35) comprises chemically reducing particulate iron oxide with hot reducing gas containing carbon monoxide and hydrogen and discharging the product (18) into a sumerged combustion melter-gasifier chamber (30). Fossil fuel (coal) is injected into the melt together with oxygen to gasify the fuel, melt the iron and form hot gas in the chamber. The hot gases are removed, humidified by injection of water, and cleared to give a hot reducing gas which can be recycled to reduce further iron oxide. Molten iron is continuously recovered from the melter-gasifier. The method allows solid fuels to be used for the production of iron melts.
Patent KR-810001681-B1 (KR)
Title: Sprayable paste for fabric
Inventor: LEE BOO SEOB
IPC: D06M15/00
Filed: 1980-07-21
Granted: 1981-10-27
Abstract: Sprayable paste composition for fabric was manufd. by mixing 83cc 6% arabian gum soln. with 233cc 1.3% C.M.C,83cc 1.5% P.V.A., 233cc 1.0% sodium alginate, 167cc 1.0% tragacanth gum, 40cc melamin resin, and 80cc silicone TSM-637 as a parting agent followed by adding 1% sodium acetate or sodium dihydroacetate as an antiseptic and 0.1% water-solubel perfume.  The title composition has a good wettability and antiseptic.
Patent KR-830001894-B1 (KR)
Title: 액체샘플링 게이지
IPC: G01N1/12
Filed: 1980-09-22
Granted: 1983-09-17
Abstract: 내용 없음.
Patent KR-880001646-B1 (KR)
Title: Loading system for a numerical control unit
Inventor: KURAKAKE MITSUO
IPC: G05B19/414
Filed: 1981-09-23
Granted: 1988-09-03
Abstract: In the system a control programme stored in a non-volitile memory is transferred into a RAM provided on the system side. When using a microprocessor with an internal ROM for load-sharing with a main processor, a loading programme is stored in the internal ROM, simplify the circuit construction and reduce the hardware cost.  When the numerical control unit is activated, the main processor reads out the loading programme stored in ROM in subprocessor and stores it in RAM.  The transferred loading programme is executed in the main processor, transferring the control programme stored in non-volatile memory into RAM, and thus finishing loading.
Patent KR-890000333-B1 (KR)
Title: Circuit arrangement for modifying dynamic range using series arranged bi-liner circuits
Inventor: DOLBY RAY M
IPC: H03G7/00
Filed: 1981-12-19
Granted: 1989-03-14
Abstract: This apparatus involves the compressor and the enhancer, each of which compresses and enhances the dynamic range.  The compander system for the dynamic range of information signals comprises series- connected circuits in cross-coupling.  One circuit has a bilinear characteristic and consists of a low level portion with constant amplification up to threshold with variable amplification, and a high level portion with a constant amplification.  The arrangement of the circuit intermediate portions is such that their amplification variations covers a larger range than each individual circuit.  At least one coupling circuits connect information signal components in one of the compander circuits with a signal path in another circuit, in order to modify the other circuit action in dependence on the state of the first circuit.
Patent KR-890003130-B1 (KR)
Title: Process for the preparation of nacreous pigments
Inventor: BERNHARD HORST
IPC: C09C1/00
Filed: 1982-12-14
Granted: 1989-08-23
Abstract: Nacreous pigments consist of mica platelets, pref. 5-200 microns in dia., coated with a layer of TiO2 and a thin film of MnO2.  The pigments are produced by suspending the mica platelets in water at pH 0.5-5, heating the soln. to 50-100≰C, adding a soluble Ti salt and an opt. other metal oxide, increasing the pH to above 3 and adding Mn at 50-100≰C while keeping the pH constant to MnO2.  The coated platelets are washed, dried and calcined to obtain the platelets with a good light stability.
Patent KR-870000140-B1 (KR)
Title: Numerical control method
Inventor: SHIMIZU YUDAKA
IPC: G05B19/416
Filed: 1983-01-12
Granted: 1987-02-12
Abstract: The system constantly monitors the load on the tool and controls feed accordingly, to permit application of loads closer to the permissible value. Values of current to a spindle motor from a circuit including a spindle computing circuit, a speed controller and an amplifier are detected, e.g. insets of 10 samples every 100 msec. These are A/D converted supplied to a store and averaged. Average values are supplied to a calculation circuit which also receives input from the spindle speed computing circuit and calculates the load output or torque.
Patent KR-860001047-B1 (KR)
Title: Process for the preparation of aspartyl-phenylalanine methyl ester
Inventor: PARK ON-SHIK
IPC: C07K7/02
Filed: 1983-08-29
Granted: 1986-08-01
Abstract: Methylester of dipeptide, Asp-Phe, was prepd. by reacting Asp -Phe with pentaformaldehyde in an anhydro aprotic solvent in the presence of an acidic catalyst. Thus, 5g Asp-Phe was reacted with 0.6g p- formaldehyde in 47 ml anhyd. ethylacetate at 45≰C for 6 hr, and cooled to room temp. This reaction mixt. was treated with methanolic HCl. This resulting material was dissolved in ethylacetate-NaOH soln. and the organic layer was extd. with H2O to give 62.9% .-L-aspartyl- L-phenylalanine methyl ester.
Patent KR-920001699-B1 (KR)
Inventor: TAKAKI HIROYOSHI
IPC: G11B23/087
Filed: 1984-06-18
Granted: 1992-02-22
Abstract: 내용 없음.
Patent KR-910007066-B1 (KR)
Inventor: SUZUKI TOSHITAKE
IPC: B41M5/337
Filed: 1984-08-07
Granted: 1991-09-16
Abstract: 내용 없음.
Patent KR-930002707-B1 (KR)
Inventor: BRICH ZDENEK
IPC: C08G63/78
Filed: 1984-10-06
Granted: 1993-04-09
Abstract: 내용 없음.
Patent KR-880000791-B1 (KR)
Title: The manufacturing method of retro-retlective material having durability
Inventor: ANN TAE-HWAN
IPC: G02B5/12
Filed: 1984-12-28
Granted: 1988-05-09
Abstract: A retro-reflective fabric having a excellent durability for laundering and rubbing was manufactured.  A beads adhesive compsoition was composed of 30-70 wt.% self-curing type acrylic copolymer suspension having 20-60% solid matter, thickener 5-50 wt.% curing agent 0.1-5 wt.%, antifoaming agent 0.01-4 wt.% and coupling agnet (I, R, R1 = CnH2n; R2, R3=CnH2n+1, -H, -OH; x+y=3; n=1-5) 0.1-5 wt.%.  The beads adhesive liquid mixed with transparent granular beads (ID 40-80 μm; refractive index 2.0-2.4) was coated on base fabric, which was coated with transparent resin to give retro- reflective fabric.
Patent KR-900003988-B1 (KR)
Title: Magneto d.c. motor
Inventor: DOMIDO DOSIO
IPC: H02K23/04
Filed: 1985-02-06
Granted: 1990-06-07
Abstract: On the inner periphery of the motor's yoke (2), four permanent magnets (4) are equally spaced apart but are not mechanically attached to the yoke itself. Instead, the magnets are securely held in position by spring retainers (3). Each retainer consists of a flat back surface of approx. the same axial length as the permanent magnet poles, with side members (12, 13) raised and spaced apart to give a strong interference fit between the radial side surfaces (71, 72) of the adjacent magnets. The ends of each side member are returned (32) to retain the magnets (4) agatnst movement in an axial direction. The four U-formed retainers are pressed out radially into the space between magnets and secured by plastic bonding to the yoke.
Patent KR-880001145-B1 (KR)
Title: Aerosol carpet detergent composition
Inventor: AHN HO-JUNG
IPC: C11D1/02
Filed: 1985-04-10
Granted: 1988-07-01
Abstract: An aerosol detergent compsn. for carpet contains (a) 3.0-15.0 wt.% of an anion-synthetic surfactant or a nonion-synthetic surfactant, (b) 0.1-10.0 wt.% of silica or polymer, (c) 3.0-20.0 wt.% of an aerosol propellent, and (d) 0.1-5.0 wt.% of fatty acid salt of formula (I). In (I), R is C10-20 alkenyl (alkyl); X is Na, K, morpholinium, NH4, NH4 substd. by C1-3 alkyl, NH4 substd. by C1-3 alkanol (dialkanol, trialkanol) or their mixs.  The compsn. has a superior foam stability.
Patent KR-900008503-B1 (KR)
Inventor: KYOTO MICHIHISHA
IPC: C01B33/107
Filed: 1985-05-09
Granted: 1990-11-24
Abstract: 내용 없음.
Patent KR-890003670-B1 (KR)
Title: Process for manufacture of hydro-fluoric acid by reaction of sulphuric acid with fluorospar in rotating oven
Inventor: PIERRE LAROCHE
IPC: C01B7/19
Filed: 1985-05-10
Granted: 1989-09-30
Abstract: A process for manufacturing a hydrofluoric acid by the reaction of sulphuric acid and fluorospar in a rotating oven comprises (a) feeding the suphuric acid and fluorospar to a prereaction or a premixer device to produce a pulverulent product at its exit, (b) introducing the pulverulent product at 20-120≰C into the rotating oven operating at 80-350 C, to form hydrofluoric acid and calcium sulphate, and (c) recycling the reaction product to the oven such that 3-3.5 moles of calcium sulphate per mole of calcium fluoride are recycled.
Patent KR-930002163-B1 (KR)
Inventor: OHSATO KIYOSHI
IPC: G11B7/09
Filed: 1985-07-31
Granted: 1993-03-27
Abstract: 내용 없음.
Patent KR-900005808-B1 (KR)
Title: Protective control method and apparatus
Inventor: ANDOU HUMIO
IPC: H02H1/00
Filed: 1985-07-31
Granted: 1990-08-11
Abstract: In a digital protective relay, signals from transmission-line current and voltage transformers (2,3) are converted by (4) to a suitable level for filtering by (5) and sampling by sample-and-hold circuits (6). The DC outputs from these are multiplexed by (7) for A/D conversion (8) providing digital data to the memory (9-1) of a microcomputer (9). Obsolete sample values are erased and new ones are used to produce predicted values from an equation involving samples at instants in advance of the specific time point by multiples of half of the rated period, and constants related to the permissible range of error in prediction when the system operates at the rated frequency.
Patent KR-880000439-B1 (KR)
Title: A manufacturing method for shoe's interline
Inventor: YU YOL
IPC: A43B23/07
Filed: 1985-09-05
Granted: 1988-04-06
Abstract: The invention relates to a shoe lining sheet granulated with thermoplastic resins in a dot pattern and having a good air and moisture permeability.  The original raw sheet may be of a cotton fabric, nonwoven fabric or polyester fabric.  The sheet passes over between a press roll and an embossing roll (3) having a number of cell cavities for receiving the powder or paste of one or two thermoplastic resins.  The sheet applied with the resins in a pattern passes through an infrared ray heater (5) and between rollers (6) for cooling and pressing.  The preferable number of dots was about 348/sq in.
Patent KR-940010660-B1 (KR)
Inventor: ANDREOLI BRUNO
IPC: F23J1/02
Filed: 1985-09-11
Granted: 1994-10-24
Abstract: 내용 없음.
Patent KR-880001666-B1 (KR)
Title: Scroll compressor
Inventor: INABA TSUDOMU
IPC: F04C18/063
Filed: 1985-09-25
Granted: 1988-09-05
Abstract: The scroll-type fluid transferring machine comprises a stationary scroll member and an oscillatable scroll member, each of which has a spiral wrap of an involute curve or other curves projecting from a base plate.  The scrolls cooperate to form a compression chamber between the spiral wraps and the base plate by mutually fitting one into the other.  An oscillatable scroll shaft is provided on the surface of the base plate at the position opposite the spiral wrap of the oscillatable scroll.  A crank shaft has an eccentric recess which is shifted by a predetermined distance from the axis of the crank shaft.
Patent KR-890003600-B1 (KR)
Title: Process for preparing 9-chloro-1,5-benzothiazepine derivatives
Inventor: DAKETA MIKIO
IPC: C07D281/10
Filed: 1985-11-16
Granted: 1989-09-27
Abstract: The 9- chloro-1,5-benzothiazepine derivs. of formula (I) or their pharmaceuticaly acceptable acid addn. salts are prepd. by condensg. a cpd. of formula (II) or its salt with XCH2CH2NR2(R3), and pref. converting to phamaceutically acceptable salts.  In the formulas, R1=H or lower alkanoyl; R2=R3=lower alkyl; X=halo.  (I) are useful for treating hypertensive cerebral diseases and heart diseases in warm-blood animals.
Patent KR-900001087-B1 (KR)
Inventor: SCHUETZ JAMES E
IPC: C08L39/04
Filed: 1984-12-26
Granted: 1990-02-26
Abstract: 내용 없음.
Patent KR-940000437-B1 (KR)
Inventor: CIALLELLA LORETTA K
IPC: C11D3/37
Filed: 1986-01-22
Granted: 1994-01-21
Abstract: 내용 없음.
Patent KR-910005995-B1 (KR)
Inventor: BOEBERT WILLIAM E
IPC: G06F12/00
Filed: 1986-02-13
Granted: 1991-08-09
Abstract: 내용 없음.
Patent KR-890002021-B1 (KR)
Title: Moisturizing lotion
Inventor: FLOM MERLYN G
IPC: A61K8/40
Filed: 1986-03-21
Granted: 1989-06-08
Abstract: A moisturizing lotion consists of carbomer 941 0.1 wt.%, glycerine 4.5 wt.%, xanthan gum 0.1 wt.%, allantoin 0.2 wt.%, panthenol 1.0 wt.%, triethanolamine 0.3 wt.%, stearic acid 0.5 wt.%, PEG-100 stearate 1.0 wt.%, glyceryl stearate 1.0 wt.%, cetyl alcohol 1.0 wt.%, isostearic acid 2.5 wt.%, squalane 2.8 wt.%, cetearyl octanoate 1.5 wt.%, mineral oil and lanolin alcohol (85:15, W:W) 2.0 wt.%, jojoba oil 2.5 wt.%, corn oil 0-0.4 wt.%, dioctyl adipate, octyl stearate and octyl palmitate (24:41:34, W:W:W) 3.0 wt.%, corn oil, BHA and BHT (3:1:1) 0.05 wt.%, sunscreen (s) 1.4-3.0 wt.%, preservatives 0.1-1.0 wt.%, colourants 0.001-0.005 wt.%, fragrance 0.05-0.5 wt.% and deionized water q.s to 100%.  The lotion increases a rate of cell renewal.
Patent KR-890001548-B1 (KR)
Title: A process for preparing spiro-imidazolidines
Inventor: LIPINSKI CHRISTOPHER A
IPC: C07D471/10
Filed: 1986-05-28
Granted: 1989-05-08
Abstract: Spiro(chroman-, tetralin- or 1,2,3,4-tetrahydroquinoline-4, 4'- imidazolidine)-2',5'-dione derivs. of the formula (I) and (II) and theirs salts are new.  In formulas, X is O, CH2 or NH; R is H, F, Cl, methyl or methoxy; Y is O or CH2.  This new cpds. are useful for treating the side effects of diabetes mellitus such as cateracts, retinopathy and neuropathy.