baber/WOPTO huggingface dataset:
Patent KR-870000654-B1 (KR)
Title: Control device and method for electric train
Inventor: UEDA YUKIO
IPC: B60L9/12
Filed: 1981-10-13
Granted: 1987-04-04
Abstract: Rectifiers are connected to the secondary windings and to the tertiary ones respectively. One side terminals of the armatures of the 1st and the 2nd motor are connected to a DC terminal of a common rectifier; other side terminals of the armatures are connected to one side of DC terminals of rectifiers; the other side of the DC terminals of the rectifiers are connected to a DC teminal of a common rectifier. Then field coils of the respective motors are connected to DC terminals of rectifiers. With above configuration, the rectifier can be used in common so that the number of elements can be reduced.
Patent KR-850001399-B1 (KR)
Title: Process for generating chlorine dioxide
Inventor: COMBROUX JEAN
IPC: C01B11/02
Filed: 1982-01-07
Granted: 1985-09-30
Abstract: Chlorine dioxide is generated from an alkali metal chlorate (I) in an aq. soln. and HCl at 35-70≰C,with the introduction of an inert gas into the reaction mixt. so as to maintain the concn. of the ClO2, which is formed in the gaseous mixt. at less than 17%. (I) and HCl are introduced into a first reactor in a mol. ratio 0.5-3 of (I) to HCl, with the pH being 0.5-8 M. After a residence time of 2-10 mins., the prods. are passed into a system of secondary reactors that are filled and emptied successively. The temp. in each reactor is equal to or at most 15≰C above the first reactor temp. and the residence time in each reactor is 20-40 mins.
Patent KR-880001923-B1 (KR)
Title: Magnetic reproducing apparatus
Inventor: DOKUMITSU TSUNSUKE
IPC: H04N5/783
Filed: 1982-06-19
Granted: 1988-09-30
Abstract: The video recorder has a count pulse generator avoiding count pulses in synchronism with the rotation of the video head and a second generator providing noise confirmation pulses.  Both these sets of pulses are fed to a processor, together with pulses obtained from the video drum, to allow detection of the error between the vertical scanning of the FM video signal and the noise position in the produced signal.  The slow motion and stationary image device controls the tape device mechanism in accordance with the obtained error so that the noise position lies between the vertical scanning period.
Patent KR-890001337-B1 (KR)
Title: Power steering system
Inventor: KOZUKA HAJIME
IPC: B62D5/083
Filed: 1984-02-01
Granted: 1989-04-29
Abstract: The servo system comprises a rotating rod for transmitting the rotation of the input shaft to a drive take-off or output shaft, and an oil through-flow switching valve is provided in order to switch over oil flows or oil lines corresp. to a differential angle of rotation between to input and output shafts.  A working cylinder is joined to the output shaft, and a highpressure oil passageway is provided for advancing the pressure oil from the oil pump to the working cylinder via the oil through-flow switching valve.  A low pressure oil passageway is provided to return the pressure oil from the working cylinder to an oil vessel via the switching valve.
Patent KR-900008563-B1 (KR)
Inventor: PFAFFLI PAUL
IPC: C07D457/12
Filed: 1984-02-16
Granted: 1990-11-24
Abstract: 내용 없음.
Patent KR-940000049-B1 (KR)
Inventor: BAILLOD FREDERIC
IPC: B65D81/07
Filed: 1984-03-08
Granted: 1994-01-05
Abstract: 내용 없음.
Patent KR-860001351-B1 (KR)
Title: Method for manufacturing fish powder
Inventor: CHOE CHANG-HO
IPC: A23L17/00
Filed: 1984-09-18
Granted: 1986-09-16
Abstract: An apparatus to manufacture fish powder was described. The apparatus (Fig. I) was composed of (1) solid brew, (2) stirrer, (3) heat exchanger, (4) separator, (5) pipe, (6) filter, (7) pipe, (8) protruded pipe, (9) sprayer, and (10) dryer. If this apparatus is used fish powder is not attached to the inside dryer.
Patent KR-890004575-B1 (KR)
Title: Variable speed drive motor system with inverter control
Inventor: ZINSMEYER THOMAS M
IPC: F16H3/72
Filed: 1984-10-12
Granted: 1989-11-15
Abstract: The drive motor system includes a main motor (10) whose drive shaft (40) is connected to that (41) of an AC auxiliary motor/ generator (11).  The latter receives electrical excitation signals in a selected sequence from an inverter supplied with electrical power and control signals.  The inverter processes the power and control signals to form the excitation signals, each having a selected frequency and magnitude.  The excitation signal sequence is determined by the electrical control signals received from, e.g. a microprocessor control system, to vary the output drive shaft speed.
Patent KR-900006067-B1 (KR)
Title: Terminal feeding and insertion device
Inventor: GRABBE DIMITRY G
IPC: H01R33/74
Filed: 1985-02-22
Granted: 1990-08-20
Abstract: A chip carrier (12) is provided with conductive pads (14) which are to be arranged to communicate electrically to the conductor strips (26) on the circuit board (24) by contacts (18). The contacts are disposed in an array in a socket housing (10) having an outside wall (44). Each contact is V-shaped with front and rear beams (32,30). The rear beam is mounted adjacent to the outside wall and to an intermediate wall (46) of the housing. The front beam has a respective upper, lower part and a retention part (34). A pivot elbow (38) provides a pivoting motion for the whole of the front beam. The retention part is skew relative to the lower part. Consequently when the carrier is inserted into the housing the retention part engages resiliently with a corresp. conductive pad.
Patent KR-890000157-B1 (KR)
Title: Dephosphorousing and desulphurising of molten iron
Inventor: KIM GI-CHANG
IPC: C21C7/064
Filed: 1985-05-01
Granted: 1989-03-08
Abstract: This agent dephosphorizes and desuphurizes simultaneously molten iron.  The agent contains 25-50% of CaO, 25-50 % of FeO (Fe2O3 or Fe3O4), 15-20 % of CaF2, 4-10 % of Na2CO3, and 0.01-1 % of silicon oil.  The grain size of the agent is below 1m/n. Adding a small quantity of hologen compound and carbonic acid to quicklime and ferrous oxide reduces melting point and fludity. Na2CO3  increases reaction surface in order to improve dephosphoroising and desulphurising reaction.
Patent KR-890004243-B1 (KR)
Title: Height adjustable control device
Inventor: YANKER GEORGE M
IPC: F16M11/04
Filed: 1985-06-25
Granted: 1989-10-27
Abstract: A counterbalanced load carrying device for adjusting the height of an instrument, comprises a vertical column (1), a carriage (11), means (5) for supporting the instrument, and spring means.  The carriage (11) is guided by the column (1) and moves upwardly and downwardly. The means (5) are attached to the carriage (11).  The spring means are coupled to the carriage (11) for generating an upward constant force which is substantially equal to the total weights of the instrument, the mean (5), and the carriage (11), therby supporting the instrument stably in equilibrium.
Patent KR-900003633-B1 (KR)
Title: Cloth article with sound reproducing means
Inventor: KWAK STEPHEN C
IPC: A41D1/00
Filed: 1985-06-28
Granted: 1990-05-28
Abstract: Fabric article has a unit adjacent the cloth and an activator for starting the unit. The article is partic. a garment and has a graphic pattern on the fabric oriented to the activator. The unit pref. produces at least a musical tube, and the actuator is a switch with an actuating button. The button may be located against the fabric to be pressed from the exterior, or may be between the switch and the wearer's body. The garment pref. has a pocket formed by two layers of fabric, and the unit and actuator are enclosed in a water and heat- resistant sealed envelope formed by two thin plastics sheets sealed peripherally and having a member for attachment to the fabric.
Patent KR-930004570-B1 (KR)
Inventor: OKUBO MASAHIRO
IPC: F16H3/66
Filed: 1986-01-31
Granted: 1993-06-01
Abstract: 내용 없음.
Patent KR-930006411-B1 (KR)
Inventor: KASHIMURA YUICHI
IPC: F02B1/04
Filed: 1986-02-11
Granted: 1993-07-14
Abstract: 내용 없음.
Patent KR-890003654-B1 (KR)
Title: Apparatus for generation of ozone
Inventor: ITTO HAJIME
IPC: C01B13/11
Filed: 1986-05-28
Granted: 1989-09-29
Abstract: Ozone generator has a casing for cooling water and O3 generating section in which there are inner and outer sleeves sped. by an air gap.  Electrodes are defined by a conducting film on the outer surface of the outer sleeve and the inner surface of the inner sleeve.  High voltage AC is improved on the inner sleeve electrode so that a silent discharge is formed in the air gap into which pure O2 is introduced.  The dielectric material of the outer sleeve and the outer electrode have different thermal expansion coeffts.  Cracks or blisters in the outer sleeve are avoided by this ozone generator.
Patent KR-950001829-B1 (KR)
Inventor: TSUKAHARA NOBUHIKO
IPC: G11B23/00
Filed: 1986-07-23
Granted: 1995-03-03
Abstract: 내용 없음.
Patent KR-910004788-B1 (KR)
Inventor: KAWASIMA HIROMI
IPC: G11C29/10
Filed: 1986-10-27
Granted: 1991-07-13
Abstract: 내용 없음.
Patent KR-930008800-B1 (KR)
Title: Door hinge
Inventor: TAKAGAKI HITOHISA
IPC: C08L77/00
Filed: 1987-03-04
Granted: 1993-09-15
Abstract: Integral hinge material with improved fatigue characteristics, by addition of an organopolysiloxane to a selected thermoplasitc resin.
Patent KR-910008589-B1 (KR)
Inventor: MIKI MASSAYUKI
IPC: G01N27/409
Filed: 1987-05-07
Granted: 1991-10-19
Abstract: 내용 없음.
Patent KR-970000430-B1 (KR)
Inventor: BOLLI PETER
IPC: A63H29/22
Filed: 1987-07-20
Granted: 1997-01-11
Abstract: 내용 없음.
Patent KR-900004425-B1 (KR)
Title: Process for producing l-arginine
Inventor: KATSUMATA RYOICHI
IPC: C12N15/09
Filed: 1987-09-21
Granted: 1990-06-25
Abstract: A prodn. of L-arginine comprises culturing, in a culture medium, microorganisms belonging to Corynebacterium or Brevibacterium contg. recombinat DNA in which vetor DNA and a DNA fragmet, contg. genetic information participating in the synthesis of L-arginine synthetase of the microorganisms belonging to Corynebacterium or Brevibacterium, are recombined to accumulate Larginine in the culture. L-arginine is then collected from the cultute. The genetic information pref. participates in the synthesis of at least one enzyme of N- acetylgultamate kinase, N-acetylgamma-glutamyl-phosphate reductase, N-acetylornithine-gammaaminotransferase or ornithine carbamoyltransferase.
Patent KR-910000068-B1 (KR)
Title: Transmitting of receiving control circuit of reservation program detection for remote controller
Inventor: BAEK BOK-HYUN
IPC: H04Q9/00
Filed: 1987-10-31
Granted: 1991-01-19
Abstract: The method is for  receiving  and  displaying  the  preserved program data  of  the  main  body  at  the  remote  controller.  A transmitting circuit (1c) of the remote controller (1)  sends  the detection key signal to a receiving circuit (10d) of the main body (10). Then the detection flag is set and a microprocessor (10b) of the main body sends the preserved program  data  corresponding  to the program number key signal sent within a certain time after the detection flag is set. When a microprocessor (1b)  of  the  remote controller does not receive the program data  within  the  certain time, it displays the error  signal  on  a  displayer  (1e).  Even receiving the data within the  certain  time,  the  microprocessor (1b) try to detect the error  signal  from  the  received  program data. If there is an error, it displays the error state,  but  the program data on the displayer if there is not.
Patent KR-970001881-B1 (KR)
Inventor: SIDE SOLLY
IPC: E04H9/12
Filed: 1987-11-04
Granted: 1997-02-18
Abstract: 내용 없음.
Patent KR-910002893-B1 (KR)
Title: Transparent coating process by reactive sputtering and a coated article produced by said process
Inventor: BELKIND ABRAHAM I
IPC: C23C14/10
Filed: 1988-02-01
Granted: 1991-05-09
Abstract: A method for depositing a protective coating by cathode sputtering of an alloy of aluminium and silicon in a reactive gas is disclosed. The sputtering target contains sufficient silicon to produce an amorphous coating; 6 to 18 percent silicon is preferred. Targets of approximately 88% aluminium and 12% silicon are especially preferred. Oxygen, nitrogen, compounds of oxygen and compounds of nitrogen are preferred reactive gases. A range of combinations of oxygen and nitrogen are particularly preferred. The method provides durable transparent coatings which may be used as an overcoating for a metal or dielectric coating to provide increased resistance to abrasion and corrosion. In particular, the protected coating may be a metal, dielectric or dielectric-metal-dielectric coating as used in double-glazed window units for buildings or vehicles.
Patent KR-960005424-B1 (KR)
Inventor: AKASHI KANJI
IPC: A01N43/54
Filed: 1988-02-20
Granted: 1996-04-25
Abstract: 내용 없음.
Patent KR-910007393-B1 (KR)
Title: Dual-port memory control signal generation circuit
Inventor: SIM DAE-YUN
IPC: H04N5/45
Filed: 1988-05-18
Granted: 1991-09-25
Abstract: The circuit for providing the stable timings  to  the  direct data transfer and memory writing, integrating the  system  into  a single block, and removing the glitch and unknown conditions  when accessing the memory separates the timing process to the  one  for the direct data process and another for the writing and refreshing of the memory. The circuit includes a counter (10)  for  supplying the signal converted by the grey coding method, a decoder (20) for generating strobo signal for row and column address, a  dual  port request signal generator (40)  for  generating  the  serial-output enable signal (DT), and a dual port memory (50).
Patent KR-910006248-B1 (KR)
Inventor: IMAI SHIICHI
IPC: H01L29/76
Filed: 1988-05-21
Granted: 1991-08-17
Abstract: 내용 없음.
Patent KR-910004318-B1 (KR)
Title: Vertical type dmos transistors cell
Inventor: KIM JONG-OH
IPC: H01L29/06
Filed: 1988-06-27
Granted: 1991-06-25
Abstract: The cell structure is formed by P-type diffusion region in  a N- epitaxial layer  on  a  N-type  Si  substrate  (1).  The  P-type diffusion region has a shape in which a circle is circumscribed to the hexagon and the radius of the circle is one side length of the hexagonal cell. Alternatively spaced three sides are formed by the circumscribing circumference and another three sides are formed by symmetrising the circumscribing circumference to each sides of the hexagon. A N+ region having a constant width is formed  along  the inside perimeter of the P-type diffusion region. The  cell  has  a structure extending the channel width to improve current  transfer capability.
Patent KR-940010385-B1 (KR)
Inventor: TAJIMA IKUO
IPC: G05B19/4069
Filed: 1988-06-28
Granted: 1994-10-22
Abstract: 내용 없음.
Patent KR-910000558-B1 (KR)
Title: Automatic particle-abstraction method in the ship-inside
Inventor: OH OK-SOO
IPC: B63B27/25
Filed: 1988-08-23
Granted: 1991-01-26
Abstract: The  extracting  method  close  up  ship-inside  filled  with granularity (1); intake means  are  blowing  air  from  inside  to outside; multiful perforting holes (4) perforated at tighte  plate (3) with regular space; lifting tubes (5) inserted  at  the  holes (4); multiful spacers (6) mounted at the bottom of  lifting  tubes (5); granularity (1) around spacer (6) continuously extracted from the ship-inside. Up-and-down moving suction tubes (5) with spacers (6) on the front ends are installed through holes (4)  of  a  seal plate (3) provide at a  distance  from  the  tap  surface  of  the accumulated grits. A suction unit (11) draws grits in  ship  rooms by suction force thru the  tubes  out  to  a  collector  bin.  The diameter of the tube is larger when farther away from the outlet.
Patent KR-910002507-B1 (KR)
Title: Process for the preparation of p,p'-bisphenol
Inventor: DANAKA MITHIO
IPC: C07C37/50
Filed: 1988-09-22
Granted: 1991-04-23
Abstract: A process for producing p,p'-biphenyl by the dealkylation reaction of 3,3',5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl, said reaction being carried out in the presence of an acid catalyst using as solvent a saturated hydrocarbon having a boiling point of 190 DEG C or above, an alicyclic hydrocarbon having a boiling point of 190 DEG C or above, a hydrocarbon with an iodine value of no more than 1, sulfolane, or a mixture of these solvents.
Patent KR-970009592-B1 (KR)
Title: New 11-arylsteroid compounds
Inventor: DE JONGH HENDRIK PAUL
IPC: A61K31/565
Filed: 1988-12-10
Granted: 1997-06-14
Abstract: The invention relates to new 11-arylsteroid compounds, having a strong antiprogestin and a weak or nonexistent antiglucocorticoid activity, to processes for preparing said compounds and also to pharmaceutical preparations which contain these derivatives as active constituent, characterized in that said steroids have the following formula: <CHEM>  in which  R1      is an aryl group with a - @@@X   group as substituent, X and Y each being separately H or a (1-4 C) hydrocarbyl group or together a (2-6 C) hydrocarbyl group which forms a 3- to 7-membered ring together with the nitrogen atom; R2      is hydrogen, hydroxyl, an acyloxy or an alkoxy group or a saturated or unsaturated hydrocarbyl group containing 1-8 carbon atoms, which hydrocarbyl group is provided with at least one hydroxyl, oxo, azido, cyano and/or halogen group; R3      is a hydroxyl, an acyloxy or an alkoxy group or an acyl group optionally substituted by a hydroxyl, alkoxy, acyloxy or halogen group; or R2 and R3 together form a ring system, with the proviso that if R3 is hydroxyl, R2 is not hydrogen or hydroxyl; and  R4 is a methyl or ethyl group; and the  alpha - and  beta -bonds are indicated by dashed (---) and wedged ( @) lines respectively.
Patent KR-910006452-B1 (KR)
Title: Audible and visible alarm device for optical fiber telecommunications
Inventor: CHO YOUNG-SOO
IPC: H04B10/03
Filed: 1988-12-31
Granted: 1991-08-26
Abstract: The circuit for controlling  the  alarm  lamp  (10)  and  the buzzer (20) in case of the system failure  comprises  input  lines (1-6) inputting failure state of the system block, drivers driving the alarm signal and including negative  logical  drivers  (51,52) and photocouplers  (PC1-2),  transmitter   comprising   inverters (60-65)  and  logical  multipliers  (30-35)  for  transmitting  or cutting off the alarm signal,  and  logical  arithmetic  processor comprising a switch (SW1), a LED, a negative logical  adder  (53), logical multipliers (36-41), and logical adders (70-75).
Patent KR-930003320-B1 (KR)
Title: Winding device and process for winding fiber material
Inventor: KRUMMENACHER BRUNO
IPC: F16F1/36
Filed: 1989-02-17
Granted: 1993-04-26
Abstract: The winding device 1 has a rotational axis 3 and two side walls 5, 7 arranged perpendicular to the rotational axis. Each side wall 5, 7 is provided with two slits 9a, 9b; 11a, 11b extending from the middle portion 10, 12 to both extreme ends of the side wall substantially parallel to the edges of the side wall. A supply of bolts 21a, 21b, 21c is arranged to the winding device whereby the bolts have a smaller diameter than the width of the slits 9a, 9b; 11a, 11b and a greater length than the distance between the two side walls 5, 7.
Patent KR-910008068-B1 (KR)
Inventor: HWANG NAK-HYO
IPC: G03G15/00
Filed: 1989-02-28
Granted: 1991-10-07
Abstract: 내용 없음.
Patent KR-920001660-B1 (KR)
Inventor: TAKIKAWA KAZUNORI
IPC: F16D35/00
Filed: 1989-06-24
Granted: 1992-02-21
Abstract: 내용 없음.
Patent KR-920000057-B1 (KR)
Title: Process and reagent for the determination of a specifically bindable substance
Inventor: SHENK ROLAND
IPC: G01N33/546
Filed: 1989-07-05
Granted: 1992-01-06
Abstract: To determine a substance which is capable of specific binding by incubation of the sample solution with at least three receptors R1, R2 and R3, of which R1 and R2 are able to bind to one another, and R3 is able to bind specifically to the substance to be determined, and measurement of the agglutination occurring during the reaction, employed as receptor R1 is a conjugate of one partner in a specifically binding pair P and of a substance S which corresponds to the substance to be determined or is a derivative thereof and has at least one epitope of the substance to be determined, as R2 is a receptor which has at least two binding sites for P, and as R3 is a receptor which has at least two binding sites of which at least one specifically binds to an epitope of the substance to be determined or of S.
Patent KR-930001624-B1 (KR)
Inventor: MATSUI KATSUHIRO
IPC: F16B12/20
Filed: 1989-08-11
Granted: 1993-03-08
Abstract: 내용 없음.
Patent KR-910008566-B1 (KR)
Inventor: MORIYAMA NOBORU
IPC: C10L1/32
Filed: 1989-08-31
Granted: 1991-10-19
Abstract: 내용 없음.
Patent KR-0136372-B1 (KR)
Title: Wet-type exhaust gas desulfurizing apparatus
Inventor: KURODA HIROSHI
IPC: B01F5/10
Filed: 1989-09-05
Granted: 1998-04-25
Abstract: An apparatus for wet process exhaust (3) gas desulfurization comprises a spreading portion for spreading absorbent slurry (9) including calcium compound, a absorbing tower for bringing the absorbent slurry spread from the spreading portion into contact with exhaust gas (3) including sulfur oxides from opposite directions so as to absorb the sulfur oxides in the exhaust gas (3) into the absorbent slurry (9), a slurry tank (11) disposed below of the absorbing tower for receiving the absorbent slurry from the absorbing tower, a stirrer for stirring and forwarding the absorbent slurry radial inwardly, the stirrer being in an axial flow type one having a propeller, and circular system for circulating the absorbent slurry from the slurry tank to the spreading portion. The apparatus further comprises a plurality of nozzles for feeding oxidizer gas including oxygen into the absorbent slurry from a backside of the propeller towards a periphery thereof uniformly with respect to a circumferential direction, thereby bubbling the oxidizer gas finely around the propeller.
Patent KR-920005372-B1 (KR)
Inventor: SUZUKI HARUO
IPC: F16D65/28
Filed: 1989-10-19
Granted: 1992-07-02
Abstract: 내용 없음.
Patent KR-930000272-B1 (KR)
Inventor: JAEGER THOMAS
IPC: C12M1/22
Filed: 1989-12-20
Granted: 1993-01-14
Abstract: 내용 없음.
Patent KR-930007933-B1 (KR)
Inventor: NAGATSUKA SHINTARO
IPC: H01L41/09
Filed: 1990-03-29
Granted: 1993-08-21
Abstract: 내용 없음.
Patent KR-930000180-B1 (KR)
Inventor: TAKAOKA HIROAKI
IPC: B41J2/355
Filed: 1990-03-31
Granted: 1993-01-11
Abstract: 내용 없음.
Patent KR-930011219-B1 (KR)
Title: Preparation of plastic product which is decomposable by light and organism
Inventor: JANG BO-YONG
IPC: C08L23/00
Filed: 1990-05-01
Granted: 1993-11-29
Abstract: A photo-diodegradable compound is prepd.  by  (a)  mixing  50 wt.part resin, 25 wt.part LLDPE, 20 wt.part fatty acid ester,  3.5 wt.part AS66C1 as electrification preventing  agent,  0.5  wt.part stealic acid salt and 1.0 wt.pt IRGANOX  as  oxidation  preventing agent, (b) re-mixing the mixt. with 4.0  wt.pt  peroxydiphosphoric acid and 0.1 wt.pt ortho phosphoric acid, and reacting, (c) adding 0.1 wt.pt potassium and  200  wt.pt  calcium  carbonate  into  the reactant, and re-reacting to obtain the phosphoric acid salt  (I), (d) reacting the mixt. of 55 wt.pt  LLDPE,  40  wt.pt  fatty  acid ester and 5 wt.pt AS11 and ammonium salt to  obtain  the  ammonium ester (II), and (e) mixing 100 wt.pt mixt. of  resin  and  calcium carbonate (mixing ratio = 1:1 - 1:1.2) with 5.5-6.5 wt.pt (I)  and 0.1 wt.pt (II) to obtain the final product.
Patent KR-930005143-B1 (KR)
Title: Process for the preparation of polyester
Inventor: KIM KWANG-TAE
IPC: C08G63/46
Filed: 1990-05-31
Granted: 1993-06-16
Abstract: The fire-retardant polyester is produced by  (a)  reacting  a dimethyl terephthalate, an ethylene glycol, a cpd. of formula  (I) as a fire retarding agent, an antimony trioxide,  calcium  acetate and cobalt acetate in the ester-exchange reactor, (b) reacting the reactant with cpds. of (II) and (III), (c) liquid-polymerizing the reactant with a phosphorous acid to obtain a polymer pellet having 0.4-0.45 intrinsic viscosity,  (d)  drying,  heating  the  polymer pellet, and (e) solid-polymerizing it. In  the  formulas,  Y=C1-10 hydrocarbon  or  sulfonyl;  X=halogen;   k=l=m=n=1-4;   R1=R2=C1-5 alkene;  R3=R4=C1-4  hydrocarbon;  q=1-5;  R5=C  or  C1-5  alkene; R6=R7=C1-6 alkyl. The polyester has a good thermal stability.