baber/WOPTO huggingface dataset:
Patent KR-200491908-Y1 (KR)
Title: 레지스트층의 박막화 장치
IPC: H01L21/67
Filed: 2017-11-15
Granted: 2020-06-30
Abstract: (과제) 본 고안의 과제는, 액절 롤쌍에 부착된 박막화 처리액이 건조되고, 액 중의 성분이 석출·고착되어, 레지스트층 상의 박막화 처리액의 피복량이 불균일해지는 문제를 해결할 수 있는 레지스트층의 박막화 장치를 제공하는 것이다. 
(해결 수단) 기판 상에 형성된 레지스트층에 박막화 처리액을 공급하는 박막화 처리 유닛을 구비하여 이루어지는 레지스트층의 박막화 장치에 있어서, 박막화 처리 유닛이, 박막화 처리액이 들어가 있는 딥조와, 딥조의 출구 롤쌍과, 박막화 처리 유닛의 출구 롤쌍과, 딥조의 출구 롤쌍과 박막화 처리 유닛의 출구 롤쌍 사이에 설치된 액절 롤쌍을 갖고, 또한, 박막화 처리 유닛이, 그 액절 롤쌍에 박막화 처리액을 공급하는 박막화 처리액 공급 기구를 갖는 것을 특징으로 하는 레지스트층의 박막화 장치.
Patent KR-200490636-Y1 (KR)
Title: 로션 도포기
IPC: A46B7/04
Filed: 2018-04-10
Granted: 2019-12-09
Abstract: 본 고안은 로션 도포기에 관한 것으로, 더욱 상세하게는 전체적으로 유연하고 신축성이 우수한 실리콘소재로 형성되는 플렉시블 브러쉬의 베이스부의 하부에 가늘고 짧은 다수개의 브러쉬모를 형성하고, 이 플렉시블 브러쉬를 손잡이자루의 경질헤드부에 설치함으로써, 플렉시블한 베이스부가 단단한 판형의 경질헤드부에 지지되어 로션을 묻힌 플렉시블 브러쉬를 피부에 대고 문지를 때, 베이스부가 평탄한 상태를 유지하면서 가늘고 짧은 다수개의 브러쉬모는 피부와 접촉하는 데로 탄력적으로 눕혀지고 세워지는 동작을 반복하면서 물렁한 피부와 접촉하는 과정에서 브러쉬모와 베이스의 저면에 묻은 대부분의 로션이 피부에 얇게 발라지고, 브러쉬모를 포함한 베이스의 저면에 묻어 있던 로션의 잔량이 최소화될 수 있도록 하기 위한 것이다. 
본 고안에 따른 플렉시블 브러쉬(20)은 손잡이자루(10)의 선단부에 형성되는 경질헤드부(11)의 전후방에 삽입구멍(13)이 상하로 관통되게 형성되고, 경질헤드부(11)의 상면에는 머리부가 큰 리벳형 걸림핀(12)이 돌출되게 형성되며; 
상기 경질헤드부(11)의 저면에는 전체가 부드럽고 신축성이 우수한 실리콘 소재로 형성되는 플렉시블 브러쉬(20)가 착탈가능하게 설치되고; 
이 플렉시블 브러쉬(20)는 플렉시블한 판형 베이스부(21)의 저면에 가늘고 짧은 다수개의 브러쉬모(22)가 간격을 두고 형성되며, 베이스부(21)의 전후방 상부에는 삽입구멍(13)으로 끼워지는 결합밴드(23)가 형성되고, 이 결합밴드(23)의 선단부에는 걸림핀(12)에 끼워져 걸리는 걸림구멍(24)이 형성되는 구성이 포함되는 것을 특징으로 한다.
Patent KR-200493123-Y1 (KR)
IPC: H01L23/62
Filed: 2018-11-29
Granted: 2021-02-04
Abstract: 발광 소자 패키지(light emitting device package)는, 리드 프레임 유닛(leadframe unit)(2), 성형층(molding layer)(3), 및 발광 소자(light emitting device)(4)를 포함한다. 상기 리드 프레임 유닛(2)은 서로 반대쪽의 리드 프레임 상면(201)과 리드 프레임 바닥면(202)을 가진다. 상기 성형층(3)은 상기 리드 프레임 유닛(2)을 둘러싸며, 성형층 바닥면(33), 상기 리드 프레임 유닛(2)을 둘러싸기 위해 상기 성형층 바닥면(33)으로부터 위쪽으로 연장된 성형층 둘레면(surrounding surface)(31), 및 상기 성형층 바닥면(33)으로부터 오목한 다수의 납땜 홈들(solder grooves)(34)을 가진다. 상기 납땜 홈(34)들 각각은 상기 리드 프레임 유닛(2)과 만나는 제1 단부(341)와, 상기 성형층 둘레면(31)에서 개방된 제2 단부(342)를 가진다. 상기 발광 소자(4)는 상기 리드 프레임 유닛(2)의 리드 프레임 상면(201) 상에 배치된다.
Patent KR-200494093-Y1 (KR)
IPC: F24F1/027
Filed: 2020-08-03
Granted: 2021-08-02
Abstract: 창문에 설치되어 후방으로 열 교환된 열기를 배출하고 전방으로 열 교환된 차가운 공기를 배출하는 에어컨 본체와, 에어컨 본체의 후방에 설치되어 창문의 개폐 여부를 감지하는 창문 감지센서와, 에어컨 본체의 구동부의 구동을 위해 전원을 공급하는 전원공급부 및 창문 감지센서의 감지정보를 전달받아 상기 전원공급부의 전원을 선택적으로 공급하거나 차단하는 제어부를 포함하는 것을 특징으로 하는 창문형 에어컨이 개시된다.
Patent KR-200493089-Y1 (KR)
Title: Smps의 결합 분리가 용이한 조명기구
IPC: F21S8/00
Filed: 2020-08-07
Granted: 2021-01-29
Abstract: SMPS의 결합 분리가 용이한 조명기구가 개시된다. 본 고안의 일 실시예에 따른, SMPS의 결합 분리가 용이한 조명기구는, 벽이나 천장에 설치되는 브라켓부; 얇은 판 형상으로 형성되되, 양 끝단이 브라켓부에 연결되는 베이스부; 베이스부의 하측에 마련되는 LED 모듈부; 베이스부의 상측에 마련되는 전원 공급부; 전원 공급부의 일측에 인입되어, LED 모듈부에 전원이 공급되도록 하는 SMPS부; 및 전원 공급부의 일측에 체결되어, 인입된 SMPS부의 상측을 덮는 하우징 역할을 수행하며, 인입된 SMPS부를 고정시키는 체결부;를 포함한다. 이에 의해, 조명기구와 연결된 SMPS를 설치 또는 교체하는 과정에서 고정 피스를 이용한 고정 또는 해제 작업, 연결된 선들의 제거 또는 정리 작업 등을 수행할 필요 없이 쉽고, 간단하게, 조명기구에 연결되는 SMPS의 결합 또는 분리 작업을 수행할 수 있다. 더불어, SMPS 또는 SMPS에 전원을 공급하는 전원 공급 수단에 연결되는 케이블이 LED 모듈의 하단 밑으로 쳐지는 것을 방지할 수 있다.
Patent PH-22018001635-Y1 (PH)
Title: PROCESS OF MACROPROPAGATING SABA BANANA (Musa balbisiana)
Inventor: RAMIREZ JIMSON S
IPC: A01G2/35
Filed: 2018-12-17
Abstract: This present utility model relates to a process of macropropagating Saba banana (Musa balbisiana) using Benzyl Amino Purine (BAP) and misting system, following the steps of: harvesting of corms from healthy sword suckers, removing of roots of the corms, then washing them with soapy water, disinfecting of corms using 40 pcnt hypochlorite solution for 15 minutes, removing of outer sheaths to expose axillary buds using sterilized sharp knives; cutting transversely the exposed apical meristem and axillary buds of the mother corm 2 cm above the rhizome collar region, removing of apical meristem and leaving a cavity of 2 cm diameter and 4 cm depth to suppress the apical dominance and induce sprouting, soaking of corms in Benzyl Amino Purine at 2.0 mg/1 solution for 12 hours, planting of corms to the prepared propagators, constructing of three concrete propagators inside a glasshouse with each propagator measuring 1m wide, 6m long, and 1m high, then filling up with the prepared soil media with 1:1 ratio of sandy loam soil and decomposed rice hull, sterilized with hot water and cooled down for 24 hours, installing of computer-controlled misting system in the propagators, then setting of the misting system at 5-minute misting duration with 2 hours interval and to operate for 8 hours a day at nominal operating pressure of 14.22 psi.
Patent PH-22018050016-Y1 (PH)
Title: A multi-purpose power shredder
Inventor: NACALABAN CARLITO R
IPC: B02C18/00
Filed: 2018-01-08
Abstract: Disclosed is a combination of power shredder and water pump which comprises a frame which houses a shredder compartment, an engine and a pressurized washer; a shredder blade located in the shredder compartment shaftly mounted on the frame and both ends of the shaft is provided with a pulley; and an anti-jam release lever mounted on the shredder compartment adjacent to the shredder blade comprises a control lever and a lever handle situated to one end of the frame, said anti-jam release lever is mechanically engage to the shredder blade when the lever control through the lever handle is pulled, and mechanically disengaged to the shredder blade when the lever control through the lever handle is pushed.
Patent PH-22019001205-Y1 (PH)
Title: A chamber coil heating device for a diesel-fueled stove
Inventor: JUANZO JOHN F
IPC: F24C5/00
Filed: 2019-08-30
Abstract: The present utility model relates to a chamber coil heating device for a diesel-fueled stove that would allow the use of cheaper diesel fuel in a regular kerosene-fueled stove. The chamber coil heating device for a diesel-fueled stove generally comprises a header tube having closed opposing ends, and a tubular coil having one end communicating with the header tube through an access hole provided thereat, said tubular coil having its free end being adapted to be connected to a burner of a regular kerosene stove, said header tube having a fuel access teat at a distant portion from the access hole where the tubular coil is connected.
Patent JP-2582847-Y2 (JP)
IPC: B42D15/10
Filed: 1996-07-10
Granted: 1998-10-15
Abstract: A document with an embossed macroscopic structure and acting through optical diffraction is disclosed. The structure, which serves as a security element comprises a plurality of surface portions with predetermined relief structures having spatial frequencies of over 10 lines/mm. Each surface portion is different from directly adjoining surface portions and at least some of the surface portions have a maximum dimension of less than 0.3 mm. To the naked eye, the pattern of surface portions on the document appears as a mesh of dots and lines. However, to an examiner with a magnifying device, the dots and lines appear as numbers, characters or other graphic features.
Patent IT-225090-Z2 (IT)
Title: Astuccio particolarmente del tipo per occhiali con cerniera flessibile agente per innesto sulle parti da unire
IPC: G02C/
Filed: 1991-07-17
Granted: 1996-09-18
Abstract: In base alla presente innovazione si realizza un astuccio, del tipo con fondo e coperchio a bauletto, dotato di un sistema di innesto delle cerniere che concilia la massima sicurezza e stabilità di unione tra fondo e coperchio, con la massima rapidità di innesto e con una applicazione delle cerniere del tipo a scomparsa.Caratteristica sostanziale del presente trovato è quella di avere sia il fondo A? che il coperchio B] dotati di staffe 1?-2] e 5]-6], tra loro simmetriche e contrapposte, atte ad alloggiare le antine 11? e 12? di un corpo di cerniera flessibile C], essendo tale cerniera sostanzialmente sagomata e forma di "M" con vertice di unine delle pareti centrali agente da parte flessibile e con dentini 16] e 17], disposti sulle pareti contrapposte 11? e 12], per innestarsi nelle staffe 1? e 5?, rispettivamente del fondo e del coperchio dell'astuccio.
Patent JP-H04230524-A (JP)
Title: System for setting basic data
Inventor: HONDA KANEHISA
IPC: G06F9/06
Filed: 1991-01-07
Abstract: PURPOSE:To eliminate an erroneous data input causing the interruption or malfunction of a system by enabling the data input easy to understand from a screen as well as checking the input data. CONSTITUTION:An input analyzing means 4 judges whether or not the inputted request is data retrieval. When it is the data retrieval request, a data retrieving means 5 retrieves user form data designated by a data retrieving means 5 from a file 9. Then, an editing means 6 adds a necessary work to the data to edit an image to be outputted, and outputs it to a display 2 or a printer 3. On the other hand, when the result of decision is the updation of the data or a new registration request, the data is inputted from a keyboard 1 and the data is set and corrected according to the screen. Then, a data testing means 7 performs a test referring to an effective value definition table 10, and registeres it in the file 9 by a data registering means 8 when it is within the range of the effective value. If it exceeds the range, an editing means 6 edits the output image of input data illegality to be displayed on a display 2.
Patent JP-H11289164-A (JP)
Title: High wiring-density circuit board
Inventor: GERALD WALTER JONES
IPC: H01L21/48
Filed: 1999-01-04
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a circuit structure comprising lamination and a plurality of internal flat surfaces of high wiring-density. SOLUTION: A method of manufacturing a circuit structure comprises a step, where an organic substrate 12 comprising a circuit 14 over it is provided, a step for coating a dielectric film 30 on the organic substrate 12, a step for forming a micro via in the dielectric film 30, a step for sputtering a metal seed layer 20 on the dielectric film 30 and in the micro via, a step for placing a metal layer 22 on the metal seed layer 20, and a step for forming a circuit pattern over it.
Patent AT-A83292-A (AT)
Inventor: JACOPICH WERNER ING
IPC: H02M3/335
Filed: 1992-04-23
Abstract: In the case of a flyback converter, a voltage production unit (10) for charging an energy storage unit (60) and a connecting unit (20) for connecting the energy storage unit (60) for continuing the supply in the event of the voltage falling below a minimum input voltage (UE) are provided. Such a circuit can be retrofitted, in the case of a known flyback converter, in a simple manner in that, in particular, an energy storage module (50) is installed which can be connected in a simple manner to, in particular, three circuit points (X1, X2, X3).   <IMAGE>
Patent CR-10473-A (CR)
Title: Compuestos novedosos como ligandos del receptor de canabinoides y usos de los mismos
Inventor: DART MICHAEL J
IPC: A61K31/426
Filed: 2008-11-28
Abstract: Compuestos de la formula (I), o sales farmaceuticas, prodrogas, sales de prodrogas, o combinaciones de los mismos, donde R1, R2, R3, R4 y L1 se definen en la memoria descriptiva, composiciones que comprenden dichos compuestos, y metodos para tratar condiciones y trastornos usando dichos compuestos y composiciones. La presente invencion tambien se refiere a compuestos de formula (II) o sales farmaceuticas, prodrogas, sales de prodrogas, o combinaciones de los mismos, donde R1a, R2a y Rxn tienen los valores definidos en la memoria descriptiva, composiciones que comprenden dichos compuestos, y metodos para tratar condiciones y trastornos usando dichos compuestos y composiciones.
Patent DK-27293-A (DK)
Inventor: BOERRESEN BJARNE
IPC: E05F15/619
Filed: 1993-03-10
Abstract: For opening and closing a window or a door into and from a ventilation position a chain operating device is provided, having a first and a second fixture secured on the main frame and the frame, respectively. One fixture is firmly connected with one end of a chain (4) in engagement with a sprocket wheel mounted in the second fixture and which is driven by a rotating driving member. Said one connected fixture is designed as a two-parted coupling fixture comprising a first fixture part (1, 5) connected with the chain (4) and a second fixture part (17 to 19) connected with a frame or main frame structure. Said two fixture parts (1, 5; 17 to 19) have the form of elongated profiles that may be coupled together having individually at one end a stationary locking means (7, 22) and at the other end a releasable locking means (9, 23) so that the stationary locking means on one fixture part may be retained in releasable engagement with the releasable locking means on the second fixture part. Each of the releasable locking means (9, 23) can be switched over between two positions for releasing and retaining, respectively, the corresponding stationary locking means (22, 7).
Patent GB-544753-A (GB)
Title: Improvements relating to pressure-responsive devices for valve actuation
IPC: F16J3/02
Filed: 1941-01-03
Abstract: 544,753. Fluid actuated valves. GORDON & CO., Ltd., J., and SCHPPERS, J. F. Jan. 3, 1941, No. 106. Addition to 544,643. [Class 135] The invention of the parent Specification is modified by providing three or more pressure sensitive members jointly operating to control the inlet and outlet valves in the chamber connected to a pressure sending line so that changes in the controlling pressures produce rapid variations in the pressure in the said chamber. As shown, the device comprises six chambers A ... F spaced by three diaphragms 16, 17, 151. Bellows 28, 29, 152, 153 seal the chambers from one another. The three diaphragms are secured together by a rod 18 in which is formed an outlet valve seating 21 for the end of a valve member 40. The other end 39 of the valve member 40 co-operates with a fixed seating 38 to form an inlet valve for a source of fluid pressure to the chamber D. Bore 42 in the rod 18 leads to the atmosphere and the valve member 40 is biased by a spring 46. The sending pressure in the pipe 15 is used for controlling temperature or pressure regulating means. A pipe 66 connected to B maintains a predetermined loading pressure. A thermostat at 68 controls a valve in pipe 67 and varies the pressure in C, F, according to temperature. Pipe 67 is also connected to E through a needle valve 154 and to a volume tank 71. A is connected to pipe 15 through a needle valve 69. In operation, variation of temperature causes by means of the thermostat 68 change of pressure in F and C. This produces a large change of pressure in D and the control makes a corresponding large initial movement. Meanwhile the pressure in E approaches and thus neutralizes the effect of the pressure in F. Thus the temperature is quickly restored to that preset by the valve of the loading pressure in the pipe 66. If desired the chambers F, E may receive pressure impulses, not from piping 67, but from different conditions known to have an influence on the system.
Patent GB-587801-A (GB)
Title: Improvements in or relating to the manufacture of elastic fabrics
IPC: D03D15/56
Filed: 1945-01-02
Abstract: 587,801. Elastic fabric. INTERNATIONAL LATEX PROCESSES, Ltd. Jan. 2, 1945, No. 120. Convention date, Feb. 24, 1944. [Classes 42 (i) and 140] Elastic fabric is made by gathering up opposite edges of an extensible textile fabric, stretching the fabric by moving these edges apart while the fabric is free to contract in a direction parallel to these edges and applying a layer of elastic material while the fabric is so stretched. The gathering and stretching may be of such extent as to cause the fabric to contract 15 per cent. or more of its normal length. The gathers may be formed by a sewing machine and stitched in place, or, as shown in Figs. 3 and 4, may be produced by intermeshing gears 47, 48, and held in place by pins 50 in chains 53 of a tenter machine 44. Fig. 1 shows previously gathered fabric 12 from roll 14 travelling in the direction of the arrow at A and stretched sideways by the diverging tenter chains. At points 19 the chains assume a parallel course and then a rubber containing fluid 20 is applied by doctor blade 21 to form a coating 22 which is converted into an elastic medium and vulcanized if desired in drier 23. Two examples of suitable rubber mixes are given, or, instead of rubber a styrene-butadiene copolymer may be used. U.S.A. Specification 2,004,110 is referred to.
Patent GB-159715-A (GB)
Title: Improvements in and relating to wheels for motor road vehicles
IPC: B60B7/02
Filed: 1920-01-02
Abstract: 159,715. Barker & Co. (Coachbuilders), Ltd., and Penney, S. Jan. 2, 1920. Wheels with non-supporting casings enclosing spokes.-The outer disc d is secured by a nut b on a flanged ring a which is secured on the outer end of the hub by a series of plates c lying behind the spokes and screws c<1>. The inner disc e is formed with a central aperture large enough to fit over the hub flange v<1> and is secured by two semicircular plates f pivoted together and to the disc and, when secured together at their free ends, adapted to lie inside the hub flange. The ends of the plates f are secured together and to the disc by a screw h passing through holes f<1>, e<1>. A clip m may be provided to engage one of the spokes and hold the disc e against rotation.
Patent GB-641229-A (GB)
Title: Improvements relating to devices employing spark discharge gaps to produce illuminating flashes for photographic purposes
IPC: H05B41/32
Filed: 1947-01-02
Abstract: 641,229. Pulse generating circuit. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 2, 1947, No. 150. Convention date, Jan. 4, 1946. [Class 40 (vi)] In a circuit for producing spark discharges a capacitor 1 is charged through a limiting resistor 4 to a potential which is greater than, but not more than twice, the individual breakdown voltage of two similar spark-gaps 9 and 10 connected in series across the capacitor, resistors 5 and 6 ensuring equal voltage distribution. Discharge of the capacitor through the gaps is effected by firing a thyratron 12, connected in series with a limiting resistor 13 across gap 10, causing gap 9 to be subjected to the whole capacitor voltage so that it breaks down, whereupon gap 9 breaks down as it in turn is subjected to the full capacitor voltage, the capacitor then discharges through the two gaps. The thyratron is fired by closing switch 16 which reduces its positive cathode potential until capacitor 15 has charged through resistor 5 and 6, the purpose of this capacitor being to prevent the thyratron from firing again until the switch has been re-opened, thus allowing the capacitor 15 to discharge through resistor 17. The spark-gap electrodes 9a and 10b may be attached to the terminals of capacitor 1, while electrodes 9b and 10a may be attached to an inverted U-shaped member mounted above the capacitor terminals. Specification 582,850 is referred to.
Patent GB-605680-A (GB)
Title: Improvements in high speed reciprocating engines especially for fluid-pressure-operated hammers
IPC: B25D17/06
Filed: 1946-01-03
Abstract: 605,680. Fluid-pressure engines: CARLING, F. R., and WRIGHT, C. S. Jan. 3, 1946, No. 250. [Classes 122 (ii) and 122 (iii)] In a reciprocating engine particularly for a fluid-pressure-operated hammer, two pistons g, hare interconnected by a stem i each working in and opening to exhaust a different cylinder of a pair of cylinders b, c, open at one end and to which fluid under pressure is admitted from a port f between the cylinders by a sleeve valve k freely sliding on the stem i. Each piston has a collar g<1>, h<1> with passages g2, h<2> extending therethrough. As shown in the drawing, pressure fluid from the port f is pass-. ing through the passage g<2> to raise the piston g. Piston h, is being drawn into its cylinder c and the collar h<1> will contact the valve k to move it to close communication between port f and passage g<2> and open passage h<2> to the port f.
Patent GB-1243721-A (GB)
Title: Improvements in parachute apparatus
Inventor: MARTIN JAMES
IPC: B64D17/34
Filed: 1969-01-02
Abstract: 1,243,721. Parachutes. J. MARTIN. 9 Dec., 1969 [2 Jan., 1969], No. 281/69. Addition to 931,255. Heading B7G. In a parachute apparatus as claimed in claim 1 of Specification 931,255, the anti-squid line 1 is formed with a loop 6 as a result of two spaced-apart parts of the line being connected to one another by means of a releasable or frangible element 7. The element 7 may be a cord or a releasable two-part connector 8 (Fig. 3, not shown), or it may be formed by means of stitching. If desired, the loop 6 may be connected to another portion of the anti-squid line in an easily releasable manner (9, Fig. 3) to aid stowage and packing of the parachute. Drogue drag loads in excess of a predetermined value cause the link 7 to break or be released, so that squidding of the parachute may take place.
Patent GB-674835-A (GB)
Title: Improvements in a knitted article of footwear and method of making the same
IPC: A41B11/00
Filed: 1948-01-05
Abstract: 674,835. Knitted fabrics; stockings and socks. INTERWOVEN STOCKING CO. Jan. 5, 1948 [Feb. 6, 1947], No. 282/48. Drawings to Specification. Class 74 (ii). The sole portion of a circular-knitted article of footwear is formed of inwardly-facing stitches, so as to present a smooth surface to the foot. That portion of the coursewise extent of the toe band may be similarly knitted; the last course or two of the band may be wholly of outwardly-facing stitches. In making the stocking on a - double-cylinder machine, the inwardly-facing stitches are formed on the upper cylinder. The heel and toe may be of terry fabric. The leg and instep may be of broad rib fabric, with the broad ribs on the outer face of links-links fabric, or of outwardlyfacing stitches. The heel is of outwardly-facing stitches. An anti-ravel selvage orwelt isprovided.
Patent GB-816855-A (GB)
Title: Improved processes of manufacture of 4-bromo-4-nitrocarbanilide
Inventor: HEPWORTH WALTER
IPC: C07C273/18
Filed: 1956-01-04
Abstract: 4-Bromo-41-nitrocarbanilide is prepared either by bromination of 4-nitrocarbanilide or by interaction of p-bromophenylurea and p-nitroaniline.  The bromination is advantageously carried out in the presence of an inert diluent or solvent, e.g. acetic acid, either at ordinary temperatures, e.g. about 15 DEG  to 25 DEG  C., or at elevated temperatures, e.g. about 90 DEG  to 95 DEG  C.  The interaction is also preferably carried out in an inert diluent or solvent, e.g. o-dichlorobenzene or acetic acid. Examples are given. Specification 816,856, [Group VI], is referred to.