baber/WOPTO huggingface dataset:
Patent HR-P20020469-B1 (HR)
Title: Method for biological effluent treatment
Inventor: INGERLE KURT
IPC: C02F3/12
Filed: 2002-05-28
Abstract: After the V-phase (presedimentation) and before the R-phase (stirring) sedimented, thickened activated sludge from the SU-tank (sedimentation and circulation tank) is recycled (S-phase) into the B-tank (activated sludge tank). Preferred features: Recycling is effected during or preferably after the A-phase (extraction). The volume with lower dry matter than introduced sedimented activated sludge displaced in the S-phase in the B-tank, is recycled through openings close to the surface into the SU-tank. These only permit flow in the S- and R- phases, and are closed in the V- and A- phases. The openings are closed with flaps. These open automatically during the greater differences in level between the B- and SU- tanks during the S- and R- phases.With reduced water level differences in the B- and A- phases they remain closed. Stirring in the SU- tank (R-phase) is effected by air injection, or by electrically-driven stirrers. Recycle of sedimented and thickened activated sludge is effected in the S-phase by a compressed air lift pump or by electrically-driven stirrers. Further similar variations are described, and processing durations and levels are detailed.
Patent HR-P20060147-B1 (HR)
Inventor: MATTERN CLAUDIA
IPC: A61K9/00
Filed: 2006-04-18
Abstract: Ovaj izum odnosi se na pernazalno primjenjiv pripravak za kontrolirano otpuštanje spolnih hormona u sistemski krvotok, naročito pripravak koji aktivnim sastojcima omogućava apsorbiranje na kontinuirani način, omogućavajući tako bolju biodostupnost pri vrlo niskim dozama, te dulje djelovanje.
Patent JO-3444-B1 (JO)
Title: Benzoazepin-Oxy-Acetic Acid Derivatives As PPAR-Delta Agonists Used For The Increase Of HDL-C, Lower LDL-C And Lower Cholesterol
Inventor: KEITH T DEMAREST
IPC: A61P1/18
Filed: 2007-04-17
Granted: 2019-10-20
Abstract: The invention is directed to compounds of formula(I) useful as PRAR agonists, pharmaceutical compositions and methods of treating one or more conditions including, but not limited to, diabetes, nephropathy, neuropathy, retinopathy, polycystic ovary syndrome, hypertension, ischemia, stroke, irritable bowel disorder, inflammation, cataract, cardiovascular diseases metabolic x syndrome, hyper-LDL- cholesterolemia, dyslipidemia( including hypertriglyceridemia, hypercholesterolemia, mixed hyperlipidemia, nd hypo-HDL- cholesterolemia) atherosclerosis, obesity, and other disorders related to lipid metabolism and energy homeostasis complications thereof, using compounds of the invention are also described.
Patent JO-3034-B1 (JO)
Title: Device for Transporting Bulk Materials
Inventor: BERND REEB
Filed: 2010-05-02
Granted: 2016-09-05
Abstract: A device for transporting bulk materials comprises a conveying chute (1) having at least one tubular conveying chute portion (2), in which fluidizing gas can be introduced into the lower region of the tube cross-section via at least one main channel (3) or main channel portion (11) extending in longitudinal direction of the conveying chute (1) and via gas outlet channels (4) branching off from the same at intervals. The at least one 10 main channel (3) or main channel portion (11) extends outside the conveying chute (1) or the respective conveying chute portion (2). At least at their gas outlet end, the gas outlet channels (4) are formed as nozzle tubes (6) branching off from the main channel (3) or the respective main channel portion (11) and directed downwards at an angle from the side through the tube wall (5) of the conveying chute (1) or the respective 15 conveying chute portion (2). (Fig.)
Patent JO-3780-B1 (JO)
Title: Novel ferroportin inhibitors
Inventor: ARIS KALOGERAKIS
IPC: A61K31/427
Filed: 2016-10-23
Granted: 2021-01-31
Abstract: The invention relates to novel compounds of the general formula (I), with Het-2 being an optionally substituted bicyclic heteroaryl of the formula pharmaceutical compositions comprising them and the use thereof as medicaments, in particular for the use as ferroportin inhibitors, more particularly for the use in the prophylaxis and/or treatment of diseases caused by a lack of hepcidin or iron metabolism disorders, such as particularly iron overload states such as in particular thalassemia and hemochromatosis.
Patent KR-790001507-B1 (KR)
Title: Electrical synchronus machines
Inventor: ROMUALD ZDZISLAW RUSTECKI
IPC: H02K15/00
Filed: 1974-09-05
Granted: 1979-10-24
Abstract: A synchronous machine was decreased the mechanical loss because of no connection between  the rotor and the stator and not necessary cooling unit because of no housing.  The rotor  had the exciting coil generating the magnetic field toward to the axis of the rotor on the magnetic core and the stator had the coil winded to place closely to the surface of core on a part of the magnetic core.  The cores of the rotor and the stator were placed on coaxis and looked at each other.
Patent KR-800000888-B1 (KR)
Title: Semiconductor device
Inventor: HAYASHI HISAO
IPC: H01L29/161
Filed: 1976-01-07
Granted: 1980-08-30
Abstract: A wide gap emitter-type transistor having improved hetero-junction is described. The hetero-juction is formed by combining polycrystalline or amorphous silicon containing oxygen to the silicon substrate, so that the transistor`s current amplification factor(hfe) is increased and emitter injection efficiency(γ) can be obtained about 1 by reducing a minority carrier current in emitter. The transistor whose cut-off frequency is 15[MHz , can be used by high frequency transistor or switching transistor.
Patent KR-810000955-B1 (KR)
Title: Process for preparing(2,3-dihydro-2,2-dimethyl-benzofuran-7-yl-n-methylcarbamoyl)-(n'-alkyl-carbamoyl)-sulfides
Inventor: BOEGER M
IPC: C07D307/86
Filed: 1978-03-24
Granted: 1981-08-24
Abstract: Title compds.[I; R1 = C1-10 alkyl, C1-2 alkoxy - C1-2 alkyl, cyclohexyl group; R2 = C1-4 alkyl; Z = halogen, (CH3)-NCOX1 (X1 = halogen); Y = H, IV , useful as insecticide, were prepd. by reaction of compd. (II) and compd. (III) in the presence of base.  Thus, the mixt. of methylene chloride 70 ml, methyl-N-n-butyl urethane 8.5 g, SCl2 8.7g, and triethylamine 7.1 g was stirred for 30 min at 0-5oC, suspended in the petroleum ether and then filtered to give intermediate.  The intermediate was added in the methylene chloride 70 ml soln. at 5-10oC and stirred for 12 hr. after dropping pyridine 7g.  The reactant was suspended in the benzene, filtered and distilled to give I.
Patent KR-820001541-B1 (KR)
Title: Process for preparation of substituted moranolinc derivatives
Inventor: MATSUMURA SHINGO
IPC: A61K31/445
Filed: 1978-08-14
Granted: 1982-08-31
Abstract: Antidiabetic N-alkyl and alkenyl moranolines [I; Z = III (R = H, Me, Ph; when, R is H, Me or Ph, the X is C4-5 alkylene or alkenylene, C3-4 alkenylene or C3-4 alkenylene, resp.)  were prepd. by reaction of moranoline II and ZY(Y = halo).  Thus, 3.26 g II in 25 ml MeOH and 25 ml DMF was mixed with 5.0 g NaHCO3 and 8.5 g BrC4H8Ph and stirred at 80≰C, 4hr and 95≰C, 2hr orderly.  The reactant was acidifyed, extracted and recrystallized to give I(Z = -C4H8-Ph).
Patent KR-820001007-B1 (KR)
Title: Device for spreading apart a pair of fastener chain
Inventor: MORITA T
IPC: A44B19/34
Filed: 1978-12-29
Granted: 1982-06-07
Abstract: Device for spreading a pair of slide fastener stringer tapes apart at an element-free gap includes a pair of grippers (7) slidable on a support table to move transversely of the fastener and to engage one side of the tapes, and a shaft (9) carried on the table frame and drivable towards the grippers. A 2nd pair of grippers (7') are coupled with the shaft face to engage the other side of the tapes & are movable away from each other axially of the fastener. Shaft motion towards the table is converted into 2nd gripper movement away from each other while the 2nd grippers are pressed against the 1st with tapes held between them.
Patent KR-830001249-B1 (KR)
Title: 빔인덱스형 칼라텔레비젼 수상기
IPC: H04N9/24
Filed: 1980-02-04
Granted: 1983-06-27
Abstract: 내용 없음.
Patent KR-830001425-B1 (KR)
Title: 변류회로
Filed: 1980-04-03
Granted: 1983-07-25
Abstract: 내용 없음.
Patent KR-830002266-B1 (KR)
Title: 와이어 전극단선 처리방법
Filed: 1980-08-02
Granted: 1983-10-21
Abstract: 내용 없음.
Patent KR-840001227-B1 (KR)
Title: Insecticide compositions
Inventor: SAJUO WAKITA
IPC: A01N43/48
Filed: 1981-04-25
Granted: 1984-08-23
Abstract: 3-Phenoxy-α-cyanobenzyl-1-(4-ethoxyphenyl)-2, 2-dichloro-cyclopropanecarboxylate-diazinon mixt.  (I-II) is a synergistic insecticide.  Thus, the topical LD50 of a I-II mixt.  (4:2) was 1.2μg/adult housefly, as compared to 2.4 for I alone and 20 for II alone.
Patent KR-900005229-B1 (KR)
Title: Arbiter circuit
Inventor: KELLER PHILIP J
IPC: H03K17/00
Filed: 1982-01-19
Granted: 1990-07-21
Abstract: The arbiter circuit includes a latch made of two cross coupled NAND gates, one of which is a schmitt NAND gate, a difference detector, and two output NOR gates. The output of the latch is coupled to the difference detector and to one input of the NOR gates. The gates receive another input from the difference detector. The dirrerence detector is responsive to a voltage difference that exceeds the base- emiter voltage, thereby blocking signals that originate in the latch during oscillating or metastable states of the latch, which may include rut pulses.
Patent KR-880000796-B1 (KR)
Title: Display circuit apparatus
Inventor: YAMAMURA SHINGICHI
IPC: G11B19/12
Filed: 1982-09-13
Granted: 1988-05-09
Abstract: The circuit is used for detecting the presence of an information signal and requires fewer components than conventional circuits and is less complicated.  It is applicable in sound recording and/or reproduction equipment, esp. digital equipment. The input signal is clamped to a fixed level of DC  voltage.  A level detector determines the amplitude level of an output of the clamp circuit and outputs a DC output signal whose level corresp. to the measured amplitude level.  The detector output is compared with a defined reference voltage by a comparator whose output has two different levels according to whether the DC output is higher or lower than the reference voltage.
Patent KR-860000509-B1 (KR)
Title: Compensating method of channel delay and phase delay
Inventor: SHIN KI-SU
IPC: H04M3/00
Filed: 1982-10-23
Granted: 1986-05-02
Abstract: This compensation method is concerned with the channel and phase delay of signal generated in sepd. digital telephone switching system during communication within the station. This compensation method enables satd. digital telephone switching system to interchange the voice signal precisely.
Patent KR-910001620-B1 (KR)
Inventor: ITOU HAJIME
IPC: C02F3/14
Filed: 1983-08-16
Granted: 1991-03-16
Abstract: 내용 없음.
Patent KR-890003473-B1 (KR)
Title: Apparatus for measuring the pitch between adjacent rods in a nuclear fuel assembly
Inventor: ROSEVEARE RONALD N
IPC: G01B21/16
Filed: 1984-12-04
Granted: 1989-09-21
Abstract: The appts. for measuring the pitch between adjacent rods in a row of spaced-apart rods (3) in a nuclear fuel assembly (5) comprises a support plate (2), a wand (8) dimensioned to traverse the row of rods, and a carriage (6) slidably mounted on the support plate for transversely moving the wand along the row of rods. A pair of spaced- apart and non-contacting proximity sensors (A,B) are attached to the wand so as consecutively to pass by each of the rods in the row of rods and to generate a 1st. and a 2nd. output signal, resp., corresponding to its proximity to a rod as it passes by the rod.  The sensors are spaced apart less than the outside diameter of the rod of the smallest diameter in the row of rods.
Patent KR-910004353-B1 (KR)
Inventor: NAKASIMA YOSHITIGA
IPC: A23L17/60
Filed: 1984-12-14
Granted: 1991-06-26
Abstract: 내용 없음.
Patent KR-910010237-B1 (KR)
Inventor: ASHBY DEREK
IPC: A47L11/30
Filed: 1985-02-16
Granted: 1991-12-24
Abstract: 내용 없음.
Patent KR-890000332-B1 (KR)
Title: Thin display element
Inventor: KIM WON-HYUN
IPC: G02F1/133
Filed: 1985-07-16
Granted: 1989-03-14
Abstract: The device improving anti-humidity characteristics comprises upper and lower base plates (1,3), a transparent conductive layer (2), an opaque conductive layer (4), insulation layers (5,6), a luminescent layer (7), a water absorbing layer (8), a sealing material (9), and a space (10).  The water absorbing layer (8) composed of silica gel absorbs water permeated from the base plates or the sealed space immediately.
Patent KR-920004684-B1 (KR)
Inventor: NISHI SYOEI
IPC: A01K47/02
Filed: 1985-10-25
Granted: 1992-06-13
Abstract: 내용 없음.
Patent KR-890000937-B1 (KR)
Title: Make airtight pattern for compressor
Inventor: TOSHIKATZU YIEDA
IPC: F04B39/00
Filed: 1985-11-26
Granted: 1989-04-14
Abstract: Compressor cylinder and piston (2,3) are enclosed in case (1) and connected to electric motor (4,5) output shaft (6).  Bolts (9) are used to secure the output shaft bearing (7) to the frame in various positions on both sides of the shaft.  Bolts (10) are used to secure cylinder (2) and are located between bolts (9) and shaft (6).  As a result, stiffness of the frame (8), made from a plate, is increased, and the adverse bending moment effect on compressor operation is reduced.
Patent KR-930005514-B1 (KR)
Inventor: MURAMOTO HISAICHI
IPC: C08G63/78
Filed: 1985-11-29
Granted: 1993-06-22
Abstract: 내용 없음.
Patent KR-890002273-B1 (KR)
Title: Method of winding yarn and device for carrying out the same
Inventor: HIRAI KAZUYAZU
IPC: B65H54/38
Filed: 1985-12-17
Granted: 1989-06-27
Abstract: A thread is wound up on a spool with the aid of a reversing thread and a controller for the crossover laying thread guide. The roller has several spiral grooves with inner and outer reversing areas.  The controller can be disconnected from the guide at centain outer reversing areas of the guide groove.  A synchronizing cam disc with two cams of different radii acts on a take-off roller and lever which is suported on a swivelling lever of the controller and transmits a breathing stroke.
Patent KR-900005750-B1 (KR)
Title: Vehicle detecting method and system which can communicate with vehicles
Inventor: MIZUNO MASAO
IPC: G08G1/042
Filed: 1986-04-22
Granted: 1990-08-09
Abstract: The vehicle detecting system senses the existence of a vehicle on a roadway and communicates in the following manner. A pair of transmitting and receiving coils (2) and (4) are arranged on both sides of a detection area set over the roadway of the vehicle (c). The first high frequency signal of the first frequency is applied to the transmitting coil to form the high frequency magnetic field between those coils. The existence of the vehicle is detected on the basis of the point so that the characteristic such as level or phase of the signal induced in the receiving coil changes due to the vehicle which entered the magnetic field.
Patent KR-920000968-B1 (KR)
Inventor: USHIPUSA NOBUYUKI
IPC: H01L21/48
Filed: 1986-05-21
Granted: 1992-01-31
Abstract: 내용 없음.
Patent KR-900001365-B1 (KR)
Title: Means for loading or unloading workpiece into or from a vacuum processing chamber
Inventor: ARAI GAZUYUKI
IPC: B01J3/02
Filed: 1986-06-16
Granted: 1990-03-08
Abstract: Workpieces (6) are loaded into a vacuum chamber (1) for processing via a loading chamber (3) provided with gas-tight gates (21,11) to the atmosphere and to the vacuum chamber.  A vertically displacable bell-jar (5') forms, when lowered, an inner chamber (5) to isolate the workpiece while the loading chamber is evacuated or refilled with gas.  A separate gas supply (51) and evacuation pump (52) for the bell-jar maintains the pressure at least equal to that in the loading chamber.  The advantage of the apparatus is that cotamination of workpiece by dust disturbed by turbulent gas flow is avoided.
Patent KR-920003082-B1 (KR)
Inventor: MERRIAM CHARLES N
IPC: C08F214/06
Filed: 1986-10-14
Granted: 1992-04-13
Abstract: 내용 없음.
Patent KR-940008288-B1 (KR)
Title: Heterocyclic compounds
Inventor: ARCHIBALD JOHN L
IPC: A61P25/20
Filed: 1986-11-14
Granted: 1994-09-10
Abstract: The invention relates to compounds of formulaor a salt thereof, wherein =X- is =CH- or =N-, R and R<sup>1</sup> independently represent hydrogen, halogen or lower alkoxy and R<sup>2</sup> is hydrogen or a substituent selected from halogen, lower alkyl, lower alkoxy or halolower alkyl which compounds exhibit psychotropic activity and are useful as anti-depressants.
Patent KR-900002635-B1 (KR)
Title: Limited multicast communication method and communication network system realizing the method
Inventor: TOMIKAWA MASATAKA
IPC: H04L12/18
Filed: 1986-12-27
Granted: 1990-04-21
Abstract: A limited multicast communication notice indicates that an identical message is transmitted to a number of arbitrarily designated stations prior to transmission of a text message.  The notice includes definition data.  The notice is received by a data input/output section, and it is checked by a comparator if the notice is a message destined to be sent to the intrastation.  If it is discriminated that the notice is destined to be sent to the intrastation, the notice is received, and the definition data in the notice is held in the comparator.
Patent KR-940002248-B1 (KR)
Inventor: LISTO VIRTANEN
IPC: A61M13/00
Filed: 1986-04-09
Granted: 1994-03-19
Abstract: 내용 없음.
Patent KR-950005026-B1 (KR)
Inventor: KUBOTA TATSUYA
IPC: H04N7/01
Filed: 1987-02-18
Granted: 1995-05-17
Abstract: 내용 없음.
Patent KR-940010192-B1 (KR)
Inventor: SHINOZAKI FUMIHIKO
IPC: H01G9/02
Filed: 1987-03-20
Granted: 1994-10-22
Abstract: 내용 없음.
Patent KR-900002163-B1 (KR)
Title: Measuring method the weft and mechanisms of weft inserting devices
Inventor: TAKEKAWA YUJIRO
IPC: D03D47/36
Filed: 1987-07-07
Granted: 1990-04-02
Abstract: A jet loom picking apparatus has flier winding weft turns (9)(12)(13) (14) on a storage drum (10), specifically of variable diameter, for setting pick lengths to target value, calculated by control apparatus, which contains the target value as reference data, and which receives signals from a detector at the weft arrival side of the shed, e.g. during trial picks.  The weft detectors (4,4a,4b) along the shed output signals to the control apparatus, which adjusts storage drum diameter to achieve the target pick lengths.  The picking apparatus is easily re-set to suit different wefts.
Patent KR-960001362-B1 (KR)
Inventor: HILL CHARLES H
IPC: C09J125/10
Filed: 1987-08-25
Granted: 1996-01-26
Abstract: 내용 없음.
Patent KR-950005773-B1 (KR)
Inventor: ERDMANN FRITZ
IPC: C07C49/83
Filed: 1987-08-26
Granted: 1995-05-30
Abstract: 내용 없음.
Patent KR-910004240-B1 (KR)
Inventor: MATSUMOTO OSAMU
IPC: F16B39/22
Filed: 1987-11-19
Granted: 1991-06-24
Abstract: 내용 없음.
Patent KR-910003014-B1 (KR)
Inventor: OKURA TOSHIHIKO
IPC: G09G1/02
Filed: 1988-01-14
Granted: 1991-05-15
Abstract: 내용 없음.
Patent KR-900006798-B1 (KR)
Title: Fire detection method of electronic range
Inventor: LEE IN-KYU
IPC: H05B6/68
Filed: 1988-01-30
Granted: 1990-09-21
Abstract: A fire detection apparatus has a temperature sensor (14) for detecting the temperature of air exhausting a heating room, an A/D converter (15), a microprocessor for controlling a system with the output signal of A/D converter, and a power supply (17) for providing power source to a magnetron (12) and a fan (13). The magnetron and the fan stop when the temperature of exhausting air is over 60OC or the increasing temperature per second is over 10OC.
Patent KR-910008562-B1 (KR)
Title: Epoxy resin compositions for encapsulating semi - conductor elements
Inventor: PARK CHUNG-OK
IPC: C08L63/04
Filed: 1988-02-15
Granted: 1991-10-19
Abstract: An epoxy resin compsn.  comprises  10-30  wt.pts.  of  cresol novolak epoxy resin (1), 5-20 wt.pts. of phenol novolak resin (2), 2-20 wt.pts. of silicon-modified epoxy resin (3), 60-80 wt.pts. of inorganic filler (4) and 0.2-5 wt.pts. of copolymer (5) of silicon and n-butyl  acrylate.  The  resin  (1)  is  pref.  180-240  epoxy equivalent and 60-110 deg.C softening point, and the resin (3)  is prepd. by reacting a reactive silicon cpd. with a  cresol  novolak epoxy resin. The resin compsn. for sealing a semiconductor  device has  a  low  internal  stress  and  a  good  heat-resistance   and moldability.
Patent KR-920000530-B1 (KR)
Inventor: PLOUGH CHARLES T JR
IPC: H01C7/00
Filed: 1988-05-09
Granted: 1992-01-14
Abstract: 내용 없음.
Patent KR-920000365-B1 (KR)
Title: Method of preparing transfer sheet with magnetic substance
Inventor: LEE SANG-KUK
IPC: B41C1/06
Filed: 1988-05-17
Granted: 1992-01-13
Abstract: The  process  for   producing   a   transfer   material   is characterized by coating a coating solution on the polyester  film (A) to form a resin layr (B) containg a mgnetic substance (C). The coating solution is prepd. by dissolving a  base  resin  of  30-60 wt.%  polymethyl   methacrylate   and   40-70   wt.%   vinylacette vinylchloride  copolymer   in   a   mixed   organic   solvent   of methylethyketone and toluene, and  blending  the  dissolved  resin with a gamma- Fe2O3. The transfer mterial for a magnetic stripe is stamped on an art paper by the up-down die.
Patent KR-950006448-B1 (KR)
Title: Data changing circuit of pip tv system
Inventor: HONG HYON-SOK
IPC: H04N5/45
Filed: 1988-05-18
Granted: 1995-06-15
Abstract: a first ratch for ratching a first data of 1 group entered in succession with a predetermined first to sixth clocks sequentially generated according to the input sequence of the first data, wherein the first data is 6 bit data; and a second ratch for loading the first data of the 1 group with a seventh clock following the sixth clock and compressing it into a second data by means of a eighth clock, wherein the second data is 4 bit data.
Patent KR-910000039-B1 (KR)
Inventor: KOSAKA GENZI
IPC: A45D20/30
Filed: 1988-07-30
Granted: 1991-01-19
Abstract: 내용 없음.
Patent KR-920000325-B1 (KR)
Inventor: SHOJI MISAO
IPC: G21F3/00
Filed: 1988-12-20
Granted: 1992-01-11
Abstract: 내용 없음.
Patent KR-910009635-B1 (KR)
Title: Dynamic focus electron gun
Inventor: CHO SUK-RAE
IPC: H01J29/50
Filed: 1989-03-09
Granted: 1991-11-23
Abstract: The electron gun forming the dynamic electric  field  in  the main lens system  focusing  and  accererating  the  electron  beam comprises an auxiliary electrode (G32) including three  cylindrers (32), and an elliptical electrode (G4) enveloping  windows  (W1-2) of the cylinders. The dynamic focus voltage and the  stable  focus voltage are applied to the electrodes respectively.
Patent KR-970010894-B1 (KR)
Inventor: CLARK ROBERT E
IPC: F01D5/02
Filed: 1989-03-14
Granted: 1997-07-02
Abstract: 내용없음.
Patent KR-930000650-B1 (KR)
Title: Process for producing cycloolefin random copolymers
Inventor: HAYASHI TAKASI
IPC: C08F232/08
Filed: 1989-09-07
Granted: 1993-01-29
Abstract: A process for the production of a random copolymer which comprises:  pre-heating a solution of a cycloolefin random copolymer in a hydrocarbon solvent to a temperature of from 150 to 280 DEG C; flash drying the pre-heated solution using a double-pipe flash drier equipped with a heat source; and passing the thus obtained cycloolefin random copolymer through a twin-screw extruder equipped with atmospheric and vacuum vents; said solution being obtained by copolymerization in said hydrocarbon of ethylene and a cycloolefin of general formula ÄIÜ <CHEM> wherein n is 0 or a positive integer, and R<1> to R<12>, which may be the same or different, each represents a hydrogen or halogen atom or a hydrocarbon group, or R<9> (or R<10>) and R<11> (or R<12>) together form a mono- or poly-cyclic ring.