baber/WOPTO huggingface dataset:
Patent DE-50308782-D1 (DE)
Inventor: RICHTER VOLKER
IPC: F21V15/015
Filed: 2003-12-24
Granted: 2008-01-24
Abstract: The module has at least one elongated fluorescent tube, end pieces with connection elements and an electronic voltage adapter. Tubes are held between tube holders. The end pieces have two levels, with input and output connection elements in at least one level for interconnection for series connection of modules using connection arrangements with each side exclusively compatible with single associated connection elements.  The module has at least one elongated fluorescent tube (10) and can be connected to further modules to form a light band of selectable length. Each module has end pieces (13,13') with connection elements (14,15) and an electronic voltage adapter. Tubes are held between tube holders (11,11'). The end pieces have two levels (A,B), with input and output connection elements in at least one level for interconnection for series connection of modules using connection arrangements with each side exclusively compatible with single associated connection elements
Patent DE-50309721-D1 (DE)
Inventor: NIEDERDRAENK TORSTEN DR
IPC: H04R25/00
Filed: 2003-06-16
Granted: 2008-06-12
Abstract: The electronic acoustic module (7) is embedded within the body of the hearing aid (1) which is battery powered (3). Within the hearing aid are two directional microphones (13) and the ear piece loudspeaker (11) that emits sound. The acoustic unit has a processor that performs a function to suppress any feedback between microphones and loudspeaker.
Patent DE-50310318-D1 (DE)
Inventor: SCHUETTINGER ALFRED
IPC: G02B25/00
Filed: 2003-03-04
Granted: 2008-09-25
Abstract: An optical visual aid, particularly a manual magnifier or standing magnifier, has a housing, a magnifying optical element (such as a magnifying glass) which is fixed to one area of the housing, and an electronic image-detection system in the form of a camera. The camera, which is mounted to the housing, or configured to be attached to the housing, is a color camera.
Patent DE-50312863-D1 (DE)
Inventor: GILL HARDIAL SINGH
IPC: H03C1/54
Filed: 2003-05-19
Granted: 2010-08-19
Abstract: A frequency up-converter integrated on a substrate comprises inputs for signals of different frequency (IF,LO), two control elements (Q1,Q2) with control (G) and main (S,D) connections and an output (HF) for the mixed signal. A symmetrizing component (Q3) connects the low-frequency input (IF) to the main connections.  An Independent claim is also included for a single side band frequency up-converter as above.
Patent DE-50313219-D1 (DE)
Inventor: VOELCKERS OLIVER
IPC: H01H19/00
Filed: 2003-01-11
Granted: 2010-12-09
Abstract: The aim of the invention is to improve a control element which is used to operate an electronically controlled electrical appliance, said control element being suitable for combining with digital circuits and operating on the basis of a membrane switch. To this end, a movable knob (14, 15, 16, 17) comprising elastic contact springs (19) on its lower side is arranged in an opening of a front plate (11), and a membrane switching element (13) comprising a base layer, an upper layer consisting of a deformable material, and an elastic spacer layer is provided. The base layer and the upper layer are provided with strip conductors on their opposing surfaces, said strip conductors comprising contact points at defined points of intersection. The inventive control element is provided with an integrated circuit which continuously scans the electrical connections of all contact points in quick succession and is always operative, even in standby mode, in addition to an electronic, non-volatile memory which is used to store information about the respective switching position of the knob.
Patent DE-50313292-D1 (DE)
Inventor: SCHMEHL THOMAS
IPC: A61K9/127
Filed: 2003-04-01
Granted: 2011-01-13
Abstract: The present invention discloses a method to prepare specific liposomal formulations for the pulmonary application of therapeutic substances. The liposomal components, DPPC and cholesterol at a molar ratio of 7:3 and 7:4, respectively, are combined with the non-toxic excipients, sphingomyelin, dimyristoylphophatidylcholine and/or polyethylene glycol, to prepare liposomes that are stabile during nebulization with commercially available nebulizers and exhibit sustained release kinetics of encapsulated drug substances.
Patent DE-58901190-D1 (DE)
Inventor: WESSNER MICHAEL
IPC: G01D5/34
Filed: 1989-12-01
Granted: 1992-05-21
Abstract: The arrangement comprises a tracking sensor with a light source, an optical means and a receiver with two photosensitive detectors, as well as a measuring apparatus with a computing unit. The optical means focuses light to provide a beam which falls on a moving web of foil. The tracking sensor may, for example, be installed in a re-winding installation, and during re-winding of the web, senses by means of the beam a marking track which is embossed in the web in the longitudinal direction of the web and which is composed of two different diffraction grating tracks. Each diffraction grating track projects the light diffracted therefrom in a predetermined direction of incidence to a respective detector. The sensed signals supplied by the receiver are converted into a difference signal by the measuring apparatus, and processed to provide correction signals which are supplied to a control means of the re-winding installation in order to compensate for lateral deviation of the moving web of foil.
Patent DE-58904793-D1 (DE)
Inventor: KNOBBE KARL HEINZ ING
IPC: H01S3/097
Filed: 1989-11-03
Granted: 1993-07-29
Abstract: An oscillator circuit for supplying a gas discharge path. A self-oscillating oscillator is controlled by pulses whose width, amplitude, and/or frequency are regulated as necessary to stabilize the oscillator output power, energy, and/or voltage.
Patent DE-58908171-D1 (DE)
Inventor: HEDIGER JACOB
IPC: C12M1/12
Filed: 1989-06-29
Granted: 1994-09-15
Abstract: The invention relates to a working method for the sterile connection of objects to containers or lines to be sterilised in situ, a connection valve with the associated connection line being sterilised away from the connection point, then being assembled in the closed state and the container and/or the line only then being sterilised in situ, so that the valve parts on the container side or line side are also sterilised at the same time up to the isolation zone. In addition, the invention relates to valves for carrying out the working method. <IMAGE>
Patent DE-58908228-D1 (DE)
Inventor: ENGLERT HEINRICH CHRISTIAN DR
IPC: A61K31/443
Filed: 1989-07-14
Granted: 1994-09-29
Abstract: The use of 3,4-dihydro-2H-benzo[b]pyrans of the formula I <IMAGE>  in which   R<1> is H, OH, (C1-C2)-alkoxy, (C1-C2)-alkyl or NR<4>R<5>, where R<4> and R<5> are identical or different and are H, (C1-C2)-alkyl or (C1-C3)-alkylcarbonyl, R<2> and R<3> are identical or different and are alkyl with 1-4 C atoms, Ar is an aromatic or heteroaromatic system which is unsubstituted or substituted by 1 to 3 identical or different radicals (C1-C2)-alkyl, (C1-C2)-alkoxy, halogen, trifluoromethyl, CN, NO2, CO-(C1-C2)-alkyl or SOm-(C1-C2)-alkyl with m = 1 or 2,   n is 1 or 2, X is a chain (CH2)r which can be interrupted by a heteroatom O, S or NR<6> where R<6> is H or (C1-C4)-alkyl and r is the numbers 2, 3, 4 or 5, for the production of a medicament for urinary tract disorders.
Patent DE-59000679-D1 (DE)
Inventor: HERRSCHE WALTER
IPC: F16L39/00
Filed: 1990-04-04
Granted: 1993-02-11
Abstract: The coupling sleeve forms a plurality of pipe-like separated passages (10) into which the pipe ends to be connected are inserted from both sides. Each of the passages (10) has a circumferential slot (6), near the inlet opening, having a sealing ring (5) inserted therein. The coupling sleeve is constructed from a plurality of pipe pieces (2) which are connected to two end pieces (3), each pipe piece (2) forming one of the passages (10). The sealing slot (6) is formed between the pipe pieces (2) and the end pieces (3), which allows the sleeve to be assembled from injection moulding parts, without reworking. The sealing is simplified by the seal (6) onto individual pipes and allows pipe dilations to be absorbed. <IMAGE>
Patent DE-59003668-D1 (DE)
Inventor: FREUDENBERG ULRICH DR
IPC: F16F13/00
Filed: 1990-03-07
Granted: 1994-01-13
Abstract: A hydraulically damped mount for a piston engine, in which the fluid-filled working space (4) is connected by a conduit (7) of channel-like design to the compensating space. The effective length of the conduit (7) can be shortened by arbitrary actuation of a relief valve (10) arranged at a distance from the outlets (8, 9) at both ends. The particular distance is dimensioned so that, when vibrations of a frequency corresponding to the idling speed are introduced, the fluid mass contained in the portion describing the effective length L, has imparted to it a relative motion in which it vibrates essentially in phase with the support. <IMAGE>
Patent DE-59006141-D1 (DE)
Inventor: FRICKE HELLMUTH
IPC: H05B39/10
Filed: 1990-12-05
Granted: 1994-07-21
Abstract: The circuit is designed such that it assumes a first switching state when a monitored signalling lamp (L) is operating correctly, and a second switching state in the event of a fault. A fault is regarded as the interruption of the supply circuit passing through the main filament (HF) when the signalling lamp is switched on and, when the main filament is intact, lack of readiness of the standby filament (NF) of this signalling lamp to switch on. An alarm (M), which is connected in series with the standby filament of the signalling lamp in a high-resistance manner, is used to emit a monitoring alarm. This alarm is short-circuited by the switching means (JH/1) of an indicator (JH) connected in series with the main filament, when the main filament circuit is broken, and is also deactivated when the standby filament circuit is broken. The circuit is particularly suitable for functional monitoring of signalling lamps in railway signalling lights. <IMAGE>
Patent DE-59103109-D1 (DE)
Inventor: MUENCH KARL
IPC: B65G47/82
Filed: 1991-11-12
Granted: 1994-11-03
Abstract: In a grouping device (7) for separating container groups (5) from a conveyor-fed tightly-packed container stream, there are on at least two continuously rotating belt- or chain-like drive elements (18) a plurality of grouping elements (15) with stopping and accumulating surfaces for the containers. The stopping and accumulating surfaces are moved together with the drive element in a self-contained path of rotation and extend into the path of movement (TE) of the conveyor over part of the length of said path of rotation running in the conveying direction of the conveyor. The mutual spacing (GL) (gap size) between the stopping and accumulating surfaces of two successive grouping elements can be adjusted according to the diameter of the containers. For this purpose, each grouping element (15) is fixed pivotably on the drive elements (18) and is provided with a guiding arm (28) which extends radially with respect to the pivot axis and interacts with an adjusting element (31). The latter is mounted pivotably relative to the drive element for changing the gap size and possesses a self-contained control cam (30) in which the guiding arm engages with a slider or a cam roller (29) at a radial distance from the pivot axis. 
<IMAGE>
Patent DE-59103423-D1 (DE)
Inventor: ROSENSTOCK FRIEDRICH
IPC: B03D1/004
Filed: 1991-11-07
Granted: 1994-12-08
Abstract: Contaminated soils are treated in that an aqueous slurry of the soil is separated into a coarse fraction and a fine fraction, the fine fraction is subjected to flotation, the resulting froth is dewatered and then carried away as a pollutant concentrate, and the underflow from the flotation is dewatered and is then carried away as purified soil. An emulsified oily vegetable oil is used as a collector agent for the selective flotation or an emulsified light mineral oil is used as a collector agent for the selective flotation and a light mineral oil is stirred as a conditioning agent into the fine fraction before it is subjected to the selective flotation.
Patent DE-59107917-D1 (DE)
Inventor: DILLA WOLFGANG DR
IPC: B01D53/70
Filed: 1991-03-28
Granted: 1996-07-18
Abstract: In this process, organic-chemical solvents or solvent mixtures which contain carbonic acid and are free of or low in chlorohydrocarbons are treated or mixed with calcium compounds or calcium-containing compounds which are reactive and/or act as an adsorbent towards acids and have a solubility product in water at room temperature of more than (1.0 +/- 0.5) x 10<-11>, and/or amines and/or quaternary ammonium compounds in excess and in finely divided or dissolved form at temperatures in the range between + 10 DEG C and the boiling point of the solvent or solvent mixture, and the organic-chemical solvent or organic-chemical solvent mixture is separated off. The device according to the invention for carrying out the process comprises a vapour condenser (4) for the purified, evaporated solvent or solvent mixture, at least one separator (5) for the water-containing solvent mixture, at least one heatable reactor (1) connected with the distillate tank (8), at least one reagent storage tank (2) for the reagent used, at least one intermediate tank (6) for water separated from the solvent, at least one drying unit (10) and at least one residue tank (15), the separator (5) for the purified water-containing solvent or solvent mixture being connected in its lower portion via a pipeline to the intermediate tank (6) and in its upper portion to the distillate tank (8) for the pure solvent or solvent mixture. <IMAGE>
Patent DE-59109099-D1 (DE)
Inventor: BECKER REINHARD DR
IPC: A61K31/275
Filed: 1991-11-21
Granted: 1999-03-25
Abstract: An angiotensin converting enzyme inhibitor (I) can be used in combination with Ca antagonists (III) in the prevention and therapy of proteinuria. Pref. (A) Ramipril and felodipine; (B) Ramipril and 4-(2,3-dichlorophenyl) -2,6-dimethyl-3- (1,2,4-oxadiazol-5-yl) -S-isopropoxy carbonyl-1,4-dihydropyridine (IIb), (c) Trandolapril and felodipine; (D) Trandolapril and (IIb), (E) Trandolapril and Verapamil; (F) Quinapril and felodipine; (G) Quinapril and (IIIb) or the physiologically acceptable salts of these components.
Patent DE-59201206-D1 (DE)
Inventor: CAVIEZEL GEROLD
IPC: A61K31/44
Filed: 1992-01-20
Granted: 1995-03-02
Abstract: A process for the production of free-flowing, directly compressible, at least 99.5% by weight pure vitamin B1, vitamin B2, vitamin B6, vitamin C, sodium ascorbate or calcium ascorbate comprises spray drying a 5 to 25% aqueous solution or suspension of the corresponding vitamin or sodium or calcium ascorbate. The products of this process as well as tablets and other solid dosage forms, which can be formed from these products, are also described.
Patent DE-59202677-D1 (DE)
Inventor: MALOW SIEGMAR
IPC: F16H21/02
Filed: 1992-02-04
Granted: 1995-08-03
Abstract: PCT No. PCT/EP92/00228 Sec. 371 Date Oct. 5, 1992 Sec. 102(e) Date Oct. 5, 1992 PCT Filed Feb. 4, 1992 PCT Pub. No. WO92/13784 PCT Pub. Date Aug. 20, 1992.The invention relates to a device for pivoting a pivotable module out of the path of a conveyor belt. The device is composed of a coupling triangle whose corner points are pivotally arranged in such a manner that one corner point is pivotally disposed at the pivotable module and the other two corner points are pivotally arranged at the piston rods of actuating cylinders. The housings of the actuating cylinders constitute the fixing points for the pivoting movement of the coupling triangle. The pivoting movement of the coupling triangle is effected in that only one cylinder is actuated and the other cylinder remains in its withdrawn or extended state to act as a rod.
Patent DE-59302315-D1 (DE)
Inventor: RENZ WALTER
IPC: E05D7/083
Filed: 1993-02-11
Granted: 1996-05-30
Abstract: In up-and-over wings, but also in revolving wings, which are usually large wings, the upper and the lower wing half must, in the closing position, be drawn or pressed firmly up against the fixed frame (1), in order to guarantee the necessary sealing and to prevent a warping of the wing frame (2). Such fastenings (30) can be attached and actuated in a simple way by means of standard or at least virtually standard elements, if, according to the invention, the fitting is formed in the region of the pivot bearings (6) and (7). For this purpose, there is mounted displaceably in the wing-bearing part (8) of at least one of the pivot bearings (6, 7) a coupling part (33), to which are coupled, on the one hand, a first push rod (27) displaceable directly on the basic profile (18) of the wing frame (2) and a second push rod (32) offset outwards relative thereto and mounted displaceably on a rebate strip (20) of the wing frame (2). The rebate jump or the jump in the sealing plane is thereby bridged in a simple way. <IMAGE>
Patent DE-59305695-D1 (DE)
Inventor: HINZ WERNER DR
IPC: C08G18/50
Filed: 1993-06-01
Granted: 1997-04-17
Abstract: The invention relates to a process for the preparation of elastic, cellular or compact elastomers containing bonded urethane groups or urethane and urea groups, preferably elastomer mouldings, in particular airbag covers, by reacting   a) at least one organic and/or modified organic polyisocyanate with   b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms,   c) at least one N-perethoxylated polyoxyalkylene-polyamine and   d) low-molecular-weight chain extenders and/or crosslinking agents,  in the presence or absence of   e) catalysts,   f) auxiliaries and   g) blowing agents, in a mould.o
Patent DE-59310057-D1 (DE)
Inventor: HEIMBERG WOLFGANG DR
IPC: F02N19/00
Filed: 1993-03-04
Granted: 2000-07-13
Abstract: The fuel injection system has a unit for producing increase in pressure which includes an impingement device (25), e.g. a rear wall or a piston type stop. The impingement device is provided in a fuel storage element (6) arranged outside an injection pump (1), connected at a pressure line (2) between the injection pump and the injection nozzle (3). The storage element (6) includes a fuel storage chamber (22), in which a spring preloaded diaphragm (23) is arranged. One side of the chamber is arranged at a specified distance to the diaphragm.
Patent DE-59310252-D1 (DE)
Inventor: ANDERSKEWITZ RALF
IPC: C07C315/04
Filed: 1993-01-14
Granted: 2002-01-24
Abstract: Amidine derivs. of formula (I), in the form of their racemates, enantiomer pure or enriched forms, diastereomer pairs, cis- and trans-isomers, free bases or salts (pref. with physiologically acceptable acids) are new. In (I), R1 and R2 are each CF3, halogen, R5, OR5, COR6, SR6, SOR6, SO2R6, SO2NR5R7, C(OH)R5R7, or R1 and R2 connect neighbouring C atoms on the benzene ring to which they are attached with -CR8=CR9CH=CH-, -CH=CR8CR9=CH-, -CR8=CHCR9=CH-, -OCHR10CH2-, -OCH2O-, -OCH2CH2O-, -(CH2)3-4-, -NHCOO-, -NHCOCH2O-, -COCH2O- or -COCH2CH2O-, each of these gps. being opt. substd. with 1-4C alkyl; R3 is H, OH, CF3, R5, OR6, COR6, CONR5R7, CH2OH, CH2O(1-4C alkyl), SR6, SOR6, SO2R6, SO2NR5R7, NHCO(1-4C alkyl), NHSO2(1-4C alkyl), NR5R7 or C(OH)R5R7 or a heterocyclic 5-ring contg. 1-3 heteroatoms and of formulae (a), (b) or (c); provided that if R3 is R5, R5 can only be H if at least one of R1 and R2 is not H; D, E and G are each CH, N, C(1-4C alkyl) or C-Ph; L is O or S; R4 is halogen, NH2, NH(1-4C alkyl), N(1-4C alkyl)2, OH, 1-4C alkoxy; R5 is H, 1-12C alkyl, phenyl(1-4C)alkyl or Ph (opt. substd. with halogen, 1-4C alkyl, 1-4C alkoxy or 2-5C acyl); R6 is 1-12C alkyl, Ph (opt. substd. with halogen, 1-4C alkyl, 1-4C alkoxy or 2-5C acyl); R7 is H or 1-12C alkyl; R8 and R9 are each H, OH, 1-4C alkyl, 1-4C alkoxy or 2-5C acyl; R10 is H or 1-4C alkyl; R11 and R12 are each H, OH, halogen, CF3, 1-4C alkyl or 1-4C alkoxy; A is (d), (e), X1A1X2, X2A2X3, X4A2X2, (CH2)1-2NHCO(CH2)1-3X2, -CH=CHA2X2; B is CH=CH, CH=N, S or (f); A1 is 2-4C alkylene, cis- or trans-CH2CH=CHCH2, CH2CCCH2, etc.; A2 is 1-5C alkylene; X1 is O, NH, S, SO, SO2, CO, CH2 or a gp. of formula (d); X2 is O, NH, S or a gp. of formula (e); X3 is NHCO, CONH, SO2NH or a gp. of formula (d); X4 is NHCO, CONH, NHSO2, SO2NH or NHCONH.
Patent DE-59404012-D1 (DE)
Inventor: KUNERT HEINZ DR
IPC: C03C27/06
Filed: 1994-01-11
Granted: 1997-10-16
Abstract: PCT No. PCT/EP94/00069 Sec. 371 Date Sep. 12, 1994 Sec. 102(e) Date Sep. 12, 1994 PCT Filed Jan. 11, 1994 PCT Pub. No. WO94/16187 PCT Pub. Date Jul. 21, 1994.The insulating glazing unit in accordance with the invention consists in its simplest form of two panes 1 and 2 which are joined together by means of a shaped body 13 constituted by a textile spacer fabric. By means of its high elasticity, flexurally rigid rib fibers 16 the textile spacer fabric renders possible a force transmitting coupling of the panes and the formation of a dimensionally stable and self-supporting sheet body. This sheet body is suitable in particular for the production of frameless window lights.
Patent DE-59500764-D1 (DE)
Inventor: LANTZSCH REINHARD DR
IPC: C07C323/44
Filed: 1995-07-24
Granted: 1997-11-13
Abstract: The prepn. of cyanimino-1,3-thiazolidine of formula (I) comprises reacting a cysteamine salt of formula (II) with a dialkyl N-cyanimidocarbonate of formula (III) in the presence of a diluent, at least 2 equivalents base and opt. in the presence of a protective gas atmosphere to give the intermediate prod. (IV) which is then cyclised at pH 8-9.5 to (I). X (-) =an acidic residue; R1 and R2=Me, Et, n-Pr, i-Pr, n-Bu, i-Bu, sec-Bu or tert.Bu; A (+) =a metal ion equivalent or an ammonium ion.
Patent DE-59503118-D1 (DE)
Inventor: WYDRA WOLFGANG
IPC: F16L11/08
Filed: 1995-05-09
Granted: 1998-09-17
Abstract: The hose (1) has a walling (2) of polymer, partic. elastomers, and contains at least to concentrically arranged reinforcement inlays (3,4) comprising fibres or threads. The radial outer reinforcement inlay has a greater chemical resistance to media conveyed through the hose than the radial inner reinforcement inlay. The polymer outer walling layer (2.2) surrounding the radial outer reinforcement inlay (4) is finely perforated. The internal width of the perforation channels (5) is less than 0.5 mm. The perforations are formed by closed, elastically widenable channels (5) and their density amounts to 0.5 to 5 channels per cm2.
Patent DE-59505487-D1 (DE)
Inventor: KLEEMANN HEINZ-WERNER DR
IPC: A61K31/275
Filed: 1995-09-04
Granted: 1999-05-06
Abstract: Benzoyl guanine derivs. of formula(I) and their salts are new. One of the substits. R1-R3 = Y-Ph-Ä(CH2)k-CHR7-CO-R8Ü; and the others = 1-8C alkyl, 2-8C alkenyl, (CH2)mR14, SO2NHC(=Y')NR18R19, H, halo, CN, Z(CH2)p-CqF2q+1, SOuR22, CONR23R24, COR25, SO2NR26R27, OR35 or NR35R36; Ph = phenylene (opt. mono- or di-substd. by Fl, Cl, CF3, Me, OH, OMe or NR37R38); R37, R38 = H or Me; Y = a bond, O, S or NR9; R9 = H or 1-4C alkyl; R7 = OR10 or NR10R11; R10 = H 1-8C alkyl, 1-8C alkanoyl, 1-8C alkoxycarbonyl, benzyl, or benzyloxycarbonyl; R11 = as R10 or trityl; R8 = OR12 or NR12R13; R12, R13 = H, 1-8C alkyl or benzyl; R14 = 3-8C cycloalkyl or phenyl (both opt. substd. by 1-3 F, Cl, CF3, Me, OMe, or NR15R16); R15, R16 = H or Me; Y' = O, S or NR20; R18, R19 = H, 1-8C alkyl, 3-6C alkenyl or (CH2)tR21; or R18+R19 = A; R21 = 5-7C cycloalkyl or phenyl, (both opt. mono- to tri-substd. by F, Cl, OMe or 1-4C alkyl); R20 = as R18 or amidine; Z = a bond, O, S or NR28; R22 = 1-8C alkyl, 3-6C alkenyl, (CH2)nR29 or CF3; R23, R25, R26 = as R22 or H; R24, R27 = H or 1-4C alkyl; or R23+R24, R26+R27 = A; A = (CH2)4 or (CH2)5 (both opt. having a CH2 replaced by O, S, NH, NMe or N-benzyl; R28 = H or 1-3C alkyl; R29 = 3-7C cycloalkyl or phenyl (both opt. substd. by 1-3 F, Cl, CF3, Me, OMe or NR30R31; R30, R31 = H or 1-4C alkyl; R35, R36 = H or 1-6C alkyl; or R35+R36 = (CH2)y (opt. having a CH2 gp. replaced by O, S, NH, NMe or N-benzyl); R4, R5 = H, 1-4C alkyl, F, Cl, OR32, NR33R34 or CrF2r+1; R32-R34 = H or 1-3C alkyl; k, n, t = 0-4; m, u, p = 0-2; q = 1-6; r = 1-4; and y = 4-7.