baber/WOPTO huggingface dataset:
Patent KR-950012097-B1 (KR)
Title: Process for preparatng polystyren resin having a abrasive resistance
Inventor: KIM KWANG-YUN
IPC: C08F279/02
Filed: 1993-02-26
Granted: 1995-10-14
Abstract: The polystyrene is prepared by (A) adding to styrene-conjugated diene rubber solution tertiarydodecyl mercaptan, polydimethyl siloxane and mineral oil ; (B) agitating and heating them to be bulk polymerized at 70-130 deg.C until the degree of polymerization reaches 30-40% to give a prepolymer ; (C) adding the prepolymer suspension to deionized water and then adding polymerization initiator ; and (D) suspension polymerizing at 90-150 deg.C. The styrene-conjugated diene rubber is composed of 30-60wt% rubber of a viscosity of 30-45cps and 40-70wt% rubber of a viscosity of 160-185cps.
Patent KR-100247803-B1 (KR)
Inventor: HURUKAWA DOSHIHIKO
IPC: C07C/
Filed: 1993-04-19
Granted: 2000-03-15
Abstract: 본 발명은 미량의 불순물을 함유하고 있는 비스페놀 A를 무산소 분위기하에서 5~60분 동안, 185~220℃의 용융상태에서 열처리하는 것을 특징으로 하는 열안정성이 우수한 비스페놀 A의 제조방법에 관한 것으로, 가열시 착색이 적은, 열안정성이 우수한 비스페놀 A를 얻을 수 있다. 
     본 발명의 방법으로 얻어진 비스페놀 A는 색상이 뛰어나기 때문에 색상에 대해서 요구가 엄격한 폴리카아보네이트 제조용 원료등으로서 특히 유용하다.
Patent KR-960005756-B1 (KR)
Title: The water pump control system of fire engine
Inventor: BAE DEUK-HEE
IPC: F04D27/00
Filed: 1993-06-14
Granted: 1996-05-01
Abstract: The system is disclosed having limit switches(LS1,LS2,LS3), a driving cylinder for a power transmission(2), a solenoid valve for a power transmission(3), a power transmission switch(S1), a drain valve open/close cylinder(5), a drain valve open/close solenoid valve(6), a water outlet gun open/close cylinder(8), a water outlet gun open/close solenoid valve(9), water outlet gun open/close switches(PB1,PB2), a water outlet open/close cylinder(11), a water outlet open/close solenoid valve(12), water outlet open/close switches(PB6,PB7), a main valve open/close cylinder(14), a main valve open/close solenoid valve(15), main valve open/close switches(PB4,PB5), a magnetic clutch(16), indication lamps(L1,L2,L3), an automatic/manual switch(ACS), and an emergency switch(PB3).
Patent KR-0183681-B1 (KR)
Inventor: KIM KEUN-HYUNG
IPC: H03M13/00
Filed: 1993-06-30
Granted: 1999-04-15
Abstract: 디지탈 브이티알, 디지탈 비디오레코더, 디지탈 텔레비젼 등과 같은 디지탈영상처리장치에 있어서 에러정정코드에 의해서는 복구되기 어려운 에러가 발생된 경우에 이전프레임의 정보를 이용하여 보상하는 에러보상방법 및 장치가 개시된다. 
     본 발명에 따른 에러보상장치는 현재화상 내에서 에러가 발생된 블럭의 갯수(En)를 계수하고 그 값이 소정의 임계값(En_max)을 초과할 경우에는 이전화상의 전체정보로서 현재화상의 전체정보를 대치하도록 하는 것을 특징으로 한다. 
     본 발명에 의한 에러보상장치에서는 프레임내에서 많은 에러가 발생된 경우에는 이전화상으로서 현재화상을 대치하게 함으로서 보상된 화면이 자연스럽게 되는 효과를 갖는다.
Patent KR-950014544-B1 (KR)
Title: Measuring instruments for dentistry
Inventor: KIM MUN-MU
IPC: A61C19/04
Filed: 1993-07-01
Granted: 1995-12-05
Abstract: a supplying unit having a plurality of vessels in which an artificial saliva, a sugar solution, a broth, a medicine are each filled and a plurality of pumps for absorbing each component in the vessels through a passage to convey the each component to a testing unit; the testing unit having an impeller for mounting a cultivating vessel, a driver for intermittently rotating the impeller, and a heater for heating the interior of the cultivating vessel at a predetermined temperature; and an ejecting unit having a collector inserted into the cultivating vessel, a pump connected to the collector, and a fraction collector connected to the pump and filling the solution collected intermittently by a predetermined amount with each testing pipe.
Patent KR-100282868-B1 (KR)
Title: 자동변속기 유압제어장치의 압력제어밸브
Filed: 1993-07-01
Granted: 2001-03-02
Abstract: 고속단을 달성하는 마찰요소를 포함하는 자동차용 자동변속기의 유압제어장치에 있어서, 엔진브레이크 효과를 얻고 부드러운 변속이 이루어질 수 있도록 작동압의 공급시기를 지연함과 아울러 작동압을 감압하기 위하여; "D" 레인지 "2" 레인지에서 "L" 레인지로 변속 모드를 변환할때 제2마찰요소로 배출된 후 제5마찰요소로 작동압이 공급되어 타이업 현상을 방지할 수 있도록 제2클러치 밸브와 제5마찰요소 사이에 각각 서로 상반된 입구와 출구를 갖는 유압제어밸브를 설치한 것을 특징으로 하는 자동변속기 유압제어장치의 압력제어밸브.
Patent KR-100218044-B1 (KR)
Inventor: HAN SEONG-HO
IPC: C08F4/00
Filed: 1993-07-28
Granted: 1999-09-01
Abstract: 본 발명은 고활성을 나타내고, 수지 입자크기가 크고, 좁은 입도분포의 폴리올레핀 중합체를 생산하는데 사용되는 신규한 에틸렌 중합용 촉매에 관한 것이다. 
     본 발명은 담체 생성시 재결정 공용매로 헤테로 원자를 갖는 극성화합물을 사용하여 입자크기가 큰 수지 생산이 가능한 폴리에틸렌 중합용 촉매를 제공한다.
Patent KR-960006907-B1 (KR)
Title: Safety switch structure for washing machine door
Inventor: AHN HYUN-JOO
IPC: D06F37/42
Filed: 1993-07-29
Granted: 1996-05-25
Abstract: The safety switch structure comprises a shaft(10) located downwardly on the door inside chassis, a revolving lever(23) installed in the back panel(4) to be moved by contacting with the shaft(10), and a switch lever(31) of the safety switch(32) installed at the end of the revolving lever(23) to detect the opening of the door(1).
Patent KR-970000540-B1 (KR)
Title: Switching arrangment protection circuit in an inverter cooking device
Inventor: LEE MIN-KI
IPC: H05B6/12
Filed: 1993-09-17
Granted: 1997-01-13
Abstract: During heating some food, if a surge voltage is generated from a rectifier(100), a varistor(NR1) can detect it. The surge voltage detected by a detective device, varistor(NR1), after being limited to certain voltage by a diode(D3) is inputted to a limit device(111), thru a diode(2). Then, if the surge voltage inputted to a limit device(112) is inputted to the non-inverting terminal(f) of a comparator(112a), it compares the surge voltage inputted to the non-inverting terminal(f) with the standard voltage of the source terminal which is reduced of the voltage by the surge voltage and resistors(R6,R7), if the result is higher than the standard voltage turns on a transistor(TR1) and by-passes the integration value of a integration device(107) and a switching element(Q1) of the inverter device(102) is turned off and is protected.
Patent KR-100265906-B1 (KR)
Inventor: SAKAI SEIICHI
IPC: G11B15/473
Filed: 1993-10-14
Granted: 2000-09-15
Abstract: (목적) VTR 등에서 디지탈 비디오 신호를 복수 채널로 분할하고, 복수의 트랙에 기록시킬때 그 편집시의 트랙킹 서보의 정밀도를 높히도록 하는 것이다. 
     (구성) 정보신호를 소정량마다에 4채널로 분할한다. 이들 4채널의 정보신호를 회전 자기헤드에 의하여, 자기 테이프(3)상에 경사지게 4본의 자기트랙 4A~4D로 하여 기록한다. 
     이 4본의 자기트랙 4A~4D중에서 1본 건너서 자기트랙 4A, 4C의, 이 자기트랙 길이방향에서의 소정의 위치의 에리어 4TA, 4TC에 정보신호와는 독립적으로 트랙킹 신호를 기록한다. 
     트랙킹 신호가 기록되는 에리어 4TA, 4TC를 4본의 자기트랙 4A~4D 중의 나머지 1본 건너서의 자기트랙 4B, 4D이 형성될때 이 나머지 1본 건너서의 자기트랙 4B, 4D가 주변에 형성되지 않도록 하는 것이다.
Patent KR-0131571-B1 (KR)
Title: Process of preparation for thermoplastic resin
Inventor: BAEK JONG-HYUN
IPC: C08F212/10
Filed: 1993-10-20
Granted: 1998-04-13
Abstract: Modified styrene-acrylonitrile copolymer(SAN), having epoxy functional group, was prepared. 15-30 Parts of vinyl cyanate and 0.1-15 parts of aromatic vinyl compound were polymerized in the presence of 0.1-0.5 part of an inorganic phosphate dispersing agent and methyl stearate, an organic dispersing agent, as suspending agent. In this polymerization, the inorganic  phosphate dispersing agent not dissolved in the aqueous monomer solution prevents coagulation among the monomer droplets together and the organic dispersing agent dissolved in the monomer minimizes coagulation among the monomer droplets together.
Patent KR-970006450-B1 (KR)
Inventor: TACHIBANA HIROSHI
IPC: B29C53/04
Filed: 1993-10-26
Granted: 1997-04-28
Abstract: 내용없음.
Patent KR-970007951-B1 (KR)
Inventor: SATO KAZUO
IPC: C08G18/10
Filed: 1993-12-01
Granted: 1997-05-19
Abstract: 요약없음
Patent KR-100265193-B1 (KR)
Inventor: KATO MOTOKI
IPC: H04N19/196
Filed: 1993-12-08
Granted: 2000-09-15
Abstract: ＜구성＞ 필드 메모리 군(11)으로부터의 화상신호(S1)와 움직임 보상회로(18)로부터의 신호(S3)의 차분을 취하는 차분기(13)와, 이 차분신호(S2)를 DCT변환하는 동시에 양자화하는 차분 신호 부호화기(14)와, 이 부호화 신호(S4)를 역양자화 및 역 DCT 변환하는 차분 신호 복호화기(15)와, 얻어진 블럭재생 차분 신호(S5)에 움직임 보상회호(18)로부터의 예측화상(신호 S3)을 가산하는 가산회로(16)와, 부호화 신호(S4)와 더불어 현재의 GOP에 속하는 P픽쳐의 부호화시에 과거의 GOP에 속하는 복호화 화상을 사용해서 부호화를 행하고 있는지 여부를 나타내는 랜덤 액세스 가능 지시 플래그(S9)를 가변 장부호화하는 가변 장부호화기(19)를 갖는다. 
     ＜효과＞ 대응하는 화상 복호화 장치에선 GOP로의 랜던 액세스가 가능해진다.
Patent KR-960006593-B1 (KR)
Title: Method for analyzing chromium guantities on a chromated zinc steel sheet surface
Inventor: LIM EUN-HO
IPC: C23C22/00
Filed: 1993-12-18
Granted: 1996-05-20
Abstract: The method of analizing Cr quantity has the steps of : washng the sample surface by ultra sonic waves; preparing chromate standard sol.; preparing the chromate sols. by concentrations by using the standard sol.; applying the chromate treatment sol. to the sample surface, X-ray analysis for Cr intensity; Cr concentration analysis by an atom absorption spectroscope after separation of Cr from selected sample; drawing the formula from analysis data and getting the quantity of Cr by inputting the value of Cr intensity measured through X-ray analysis. The method can increaes the saving analysis time and accuracy greatly.
Patent KR-970009200-B1 (KR)
Title: Electro-static discharge circuit
Inventor: AHN JONG-KOO
IPC: H01L27/04
Filed: 1993-12-31
Granted: 1997-06-07
Abstract: A circuit is described that is provided with a part which can remove a discharge voltage reversely applied to an input terminal of a buffer. The circuit comprises a PMOS and NMOS transistor parts. The PMOS transistor part includes a poly resistor R14 connected to an input gate of a buffer, a poly electrode capacitor C10 cnnected between the front terminal of the poly resistor R14 and a source of a PMOS transistor MP1 and a poly resistor R0 connected between the source of the PMOS transistor MP1 and a voltage source. The NMOS transistor part includes a poly resistor R15 connected to the input gate thereof, a poly electrode capacitor C13 cnnected between the front terminal of the poly resistor R14 and a source of a NMOS transistor MN1 and a NMOS transistor MN2 connected between the source of the NMOS transistor MN1 and a ground source. Thereby, it is possible to prevent the current by an electric discharge from flowing reversely at a main ESD part.
Patent KR-970001430-B1 (KR)
Title: Safety penetrating instrument
Inventor: YUN INN-BAE
IPC: A61B17/34
Filed: 1991-12-18
Granted: 1997-02-06
Abstract: A tubular needle for penetrating the tissue and the safety probe for protecting the needle are disclosed for stability and efficiency in surgical treatments. The device comprises a tubular needle (32) having an open tail portion (42) and head portion (51) with leading edge and trailing edge (48) constituting the sharp tip (46); a safety probe (34) having a tail portion (66) and head portion (70); a hub (38) accommodating the safety probe (34) and the head portion of the tubular needle (32); a diverting means (80) for diverting and reverting the safety probe (34); and a tubular inlet sleeve (100) having a head (100) secured in a housing (40) and a tail (94) having the trailing edge of the needle tail and an external edge.
Patent KR-100275221-B1 (KR)
Title: Controlled power supply
Inventor: JARVIK JAAN
IPC: H02M7/08
Filed: 1993-01-08
Granted: 2000-12-15
Abstract: PCT No. PCT/EP93/00023 Sec. 371 Date Oct. 8, 1993 Sec. 102(e) Date Oct. 8, 1993 PCT Filed Jan. 8, 1993 PCT Pub. No. WO93/14557 PCT Pub. Date Jul. 22, 1993.A controlled power supply in which an electric arc is used as a loading element. A single phase ac-to-dc invertor is provided with a matching transformer and a main rectifier and diodes which form the bridge and are connected to the matching transformer. The invertor has a controllable output. The bridge has a diagonal corresponding to an output of the rectifier and electrodes between which an electric arc can be initiated. a circuit for controlling the voltage across the electrodes includes a comparator to compare an actual rectified voltage with a reference value. The comparator provides for changing positions of the electrodes relative to each other. The single-phase ac-to-dc invertor is provided with two phase-shifting circuits that are connected in series and to the matching transformer. One of these phase-shifting circuits is a choke, whereas the other phase-shifting circuit is a capacitor. Each phase-shifting circuit is connected to a corresponding input of the main rectifier. The phase-shifting circuits are connected to an output of the main rectifier in the same polarity with diodes of the main rectifier connected to the electrodes.
Patent RO-121906-B1 (RO)
Title: Corrosion protective epoxy system
Inventor: RAICU-CHIRIAC EMILIA
IPC: C09D5/08
Filed: 2000-12-21
Abstract: The invention relates to a corrosion preventing epoxy system made of layers of corrosion preventing epoxy primer, epoxy plaster and epoxy enamel, each of them being made of two components.
Patent RO-122617-B1 (RO)
Title: Cupric fungicidal composition and process for obtaining the same
Inventor: BARABAS REKA
IPC: A01N59/20
Filed: 2007-10-11
Abstract: The invention relates to a cupric fungicidal composition, of high dispersion, used in viticulture, horticulture, vegetable growing, and to a process for obtaining the same. According to the invention, the composition consists of 4...8% copper; 40...60% apatite; 40...50% potassium nitrate and 0.5...2.5% surface-active agents, and it is presented as suspension or powder having the particles dimension under 35 nium. According to the invention, the process consists in precipitating copper from a solution of a soluble salt thereof, preferably nitrate, acetate, sulphate, at a temperature of 40...60A C, on particles of apatite A, previously obtained by precipitation in presence of surface-active agents, at a Cu:A ratio of 1:24...50, there being obtained a suspension which is processed in a known per se way, in order to obtain the desired composition, as powder.
Patent RO-126293-B1 (RO)
Title: Process for treating cloths of carbon, poly() and carbon-poly() fibres
Inventor: CÎRCIUMARU ADRIAN
IPC: B29K307/04
Filed: 2009-11-16
Abstract: The invention relates to a process for treating cloths made of carbon, Kevlar or carbon-Kevlar fibres to be used for manufacturing composite polymeric boards. According to the invention, the process consists in washing the extended cloth by pulverization of a 30% surface-active solution, degreasing the same by pulverization of a 20% sodium hydroxide solution, rinsing with water jet, drying naturally for 24 h, at the ambient temperature, applying by pulverization a solution of 30% hypochlorite, followed by natural drying for 1 h, applying by pulverization a solution of 20% polybutadiene rubber addittivated with 6% alumino-silicate and 6% amorphous carbon, followed by natural drying for 2 h, applying by pulverization a component A - epoxy resin precursor addittivated with 6% alumino-silicate and 6% amorphous carbon, followed by natural drying for 2 h, applying by pulverization a component B - amine precursor addittivated with 6% alumino-silicate and 6% amorphous carbon, followed by a final natural drying for 24 h at the ambient temperature.
Patent RO-128707-B1 (RO)
Title: Bio-compatible powder impurified with silver oxide
Inventor: ŞTEFAN MARIUS-RĂZVAN
IPC: A61P31/04
Filed: 2011-12-12
Abstract: The invention relates to a dermatological powder. According to the invention, the powder comprises 0.55% AgO, 49.7% BO, 39.8% CaO, 9.95% PO, the percentage being expressed by substance moles.
Patent SA-515360108-B1 (SA)
Title: Universal serial bus power outlet
Inventor: SATOSHI HIRATA
Filed: 2015-03-03
Abstract: A USB power outlet includes: a printed circuit board on which a USB socket is mounted; and a housing that accommodates the printed circuit board and has an insertion hole for a USB plug to be connected to the USB socket. The housing is provided with a contact part that is in contact with the printed circuit board in the proximity of the USB socket from an opposite direction of an insertion direction of the USB plug into the USB socket. Fig. 1
Patent SA-515360124-B1 (SA)
Title: Loading device for catalysts
Inventor: JOHANNING JOACHIM
Filed: 2015-03-10
Abstract: The present invention relates to a method for filling ammonia synthesis reactors and the filling devices that are used for this purpose . wherein the loading device having N loading heads offset by N/360°, wherein N is the number 3 or an integer multiple thereof, wherein each of the N loading heads has a connecting device for a hose arranged at the upper end, through which hose the catalyst material can be delivered from above, wherein each of the N loading heads has a deflecting cone with the tip pointing upwards beneath the connecting device and joined to the connecting device, a vertical holder is mounted on the underside of said deflecting cone, at least two circular deflector funnel elements are mounted on the vertical holder by means of horizontal braces, the deflector funnel elements open more narrowly at the top than at the bottom, gaps are provided between the deflector funnel elements and the lower deflector funnel elements have a larger diameter than the deflector funnel el
Patent SA-516371078-B1 (SA)
Title: Full aperture end
Inventor: GARRY RICHARD CHANT
Filed: 2016-05-07
Abstract: A full aperture unseamed can end having a vent test rating of at least 620.5 kPa (90 psi) comprising a center panel having an periphery and including a coined portion proximate a rivet, a first score defining a removable panel, a tab, including a nose, mounted to of the removable panel, and a second score disposed on the removable panel, the second score having (i) a central portion spaced apart from the coined portion; (ii) a pair of check slots disposed on either side of the central portion; (iii) a pair of lateral portions that extend from the check slots; and (iv) a pair of side portions that extend from the lateral portions, respectively. Fig. 4
Patent SA-517381665-B1 (SA)
Title: Chimeric Antigen Receptors Targeting G-Protein Coupled Receptor and Uses Thereof
Inventor: ERIC L SMITH
Filed: 2017-06-05
Abstract: The presently disclosed subject matter provides for methods and compositions for treating multiple myeloma. It relates to chimeric antigen receptors (CARs) that specifically target a G-protein coupled receptor (e.g., a G-protein coupled receptor family C group 5 member D (GPRC5D)), and immunoresponsive cells comprising such CARs. The presently disclosed CARs targeting a G-protein coupled receptor (e.g., GPRC5D) have enhanced immune-activating properties, including anti-tumor activity.
Patent SA-519402273-B1 (SA)
Title: Apparatus and method for protecting the tube-sheet of a syngas loop boiler
Inventor: SARTI SILVIO
Filed: 2019-07-23
Abstract: A syngas loop boiler (10) comprises a casing (12) that surrounds a tube bundle (14), wherein the tube bundle (14) comprises a plurality of tubes (16). One end of each of the tubes (16) is joined to a tube-sheet (18) provided with corresponding tube-sheet inlet holes (20) for inletting the syngas in the boiler (10), wherein each tube-sheet inlet hole (20) is internally provided with at least a protective sleeve (22) welded at both ends to corresponding surfaces of the tube-sheet inlet hole (20). Each tube-sheet inlet hole (20) is provided with a first respective weld overlay (24A) placed at the inlet mouth of the tube-sheet inlet hole (20), so that a first end of each protective sleeve (22) is welded to the first weld overlay (24A). Each tube-sheet inlet hole (20) is internally provided with at least a bore groove (26) that contains a respective in-bore second weld overlay (24B), so that the second end of the protective sleeve (22) is welded to the in-bore second weld overlay (24B). Eac
Patent AU-2011201684-B1 (AU)
Title: A process for producing C1-C4 alkyl nitrite
Inventor: JUNTAO LIU
IPC: C07C203/04
Filed: 2011-04-14
Abstract: Abstract A Process for Producing CI-C 4 Alkyl Nitrite The present invention relates to a process for producing CI-C 4 alkyl nitrite, comprising the following steps of a) firstly feeding nitrogen oxide 5 and oxygen into Reactor I, contacting with an aluminosilicate catalyst, and reacting to produce an effluent I containing NO 2 and unreacted NO; b) feeding the effluent I and CI-C 4 alkanol into Reactor II, and reacting to produce an effluent II containing Ci-C 4 alkyl nitrite; and c) separating the effluent II containing CI-C 4 alkyl nitrite to obtain CI-C 4 alkyl nitrite; 10 wherein reactor I is a fixed bed reactor, and Reactor II is a rotating high gravity reactor; said nitrogen oxide in step a) is NO, or a mixed gas containing NO and one or more of N 2 0 3 and NO2 , wherein the molar number of NO is greater than that of NO 2, if any; and the molar ratio of NO in nitrogen oxide to oxygen is 4-25:1.
Patent AU-2014201444-B1 (AU)
Title: Method for transferring money using email
Inventor: DORSEY JACK
IPC: G06Q40/00
Filed: 2014-03-13
Abstract: Method, systems, and apparatus for receiving the email message from a sender device; identifying, using data processing apparatus of a payment service system, a sender email address, a service email address, and one or more recipient email addresses from the 5 email message; identifying, for the sender email address, a sender financial account associated with the payment service system and, for each of the one or more recipient email addresses, a respective recipient financial account associated with the payment service system; identifying a payment amount from a subject or body of the email message; submitting a request to transfer, using the payment service system, the payment amount from 10 the respective sender financial account to the respective recipient financial account.
Patent AU-2019201745-B1 (AU)
Title: A shock-resistant eyeglasses box
Inventor: Shuai Xiangyi
IPC: A45C11/04
Filed: 2019-03-13
Abstract: The invention discloses a shock-resistant eyeglasses box, including an eyeglasses box 11 that is internally provided with a shock-resistant device 101 and a clamshell device 102 at the top; one side of the shock-resistant device 101 is provided with a transmission device 103; the shock-resistant device 101 comprises a storage cavity 12 set in the eyeglasses box 11, wherein a support plate 14 is set in the lower side of storage cavity 12; clamp plates 21 are arranged around the support plate 14; the clamshell device 102 includes a cover plate 31 set at the upper side of the eyeglasses box 11, wherein a lifting block 33 is arranged in the cover plate 31; the support plate 14, the clamp plates 21 and the lifting block 33 are configured to clamping the eyeglasses box 11 with springs outsides for shock absorption protection.
Patent AU-2019236622-B1 (AU)
Title: Control system
Inventor: SHARPE LACHLAN
IPC: F04D15/00
Filed: 2019-09-24
Abstract: Abstract A control system for an electric pump comprising an input and an output electrically connectable to, respectively, a power source and the electric pump. The control system also comprises a controller configured to cause variable electrical power to be supplied to an AC motor of the electric pump via the output and thereby control a rotational speed of the AC motor. The controller is selectively switchable between first and second motor operating modes, wherein in the first of the motor operating modes the AC motor is a synchronous AC motor and in the second of the motor operating modes the AC motor is an asynchronous AC motor. The control system also comprises a storage device coupled to the controller that stores at least one set point relating to an operating parameter of the electric pump, wherein the set point is either a constant fluid flow rate, fluid pressure or fluid level of the environment in which the electric pump is operating. The control system also comprises a communications interface for connecting the controller to a user control device. The controller is further configured such that in response to receiving a signal from the user control device, the controller toggles between the first and second motor operating modes. The controller is further configured such that in response to receiving signals from one or more pump operating sensors, the controller automatically varies the rotational speed of the AC motor to thereby maintain the set point based on a pump control mode selected via the user control device.