baber/WOPTO huggingface dataset:
Patent CS-215750-B1 (CS)
Inventor: SMISEK JIRI
IPC: G06F3/00
Filed: 1980-12-17
Abstract: Vynález se týká oboru samočinné počítače
- spojovací systém.
Zapojení řeěí zakončení obousměrné
asynchronní sběrnice v režimu diagnostiky
nebo ladění a v režimu normálního provozu.
Řešení se dosahuje rozdělením ovládaoího,
diagnostického a ladicího panelu na dva
konstrukční celky. Jeden celek tvoří deska
ovládacích a indi?<ačních prvků s konektorem
pro zasunutí desky zakončovacích členů.
Druhý celek tvoří deska logiky, zasunutá do
konektoru bloku malého počítače vedle procesoru.
V případě normálního provozu se deska
ovládacích a indikačních prvků odpojí a
deeka logiky se zamění deskou zakončovacích
členů, která se vysune z konektoru desky
ovládacích a indikačních prvků.
Možnost použití je pouze v uvedeném
oboru.
Patent CS-271571-B1 (CS)
Title: Piperazine derivatives, their salts and method of their preparation
Inventor: PROTIVA MIROSLAV DR ING DRSC
IPC: A61K31/495
Filed: 1987-12-10
Abstract: Pharmaceutically active piperazine derivatives, particularly piperazines substituted in position 1 with a 2-­(2-chloro-10,11-dihydrodibenzo(b,f)thiepin-10-yloxy)ethyl residue and in position 4 a hydrogen atom or a methyl, 2-­hydroxyethyl, 3-hydroxypropyl, 2-(aminocarbonyl)ethyl, 2-­(acetoxy)ethyl or 2 (decanoyloxy)ethyl group, their acid addition salts and processes for the preparation thereof. The compounds are noncataleptic neuroleptics with high affinity to dopamine D-2 receptors and with in vivo antidopaminergic activity but only slight sedative, adrenolytic and anticholinergic properties; but use as antipsychotic drugs free of undesirable side effects. Said compounds are available by several routes, such as (a) reaction of 10-(2-bromo-ethoxy)-2-chloro-10,11-dihydro­dibenzo(b,f)thiepin with piperazine, 1-methylpiperazine, 2-­(1-piperazinyl)ethanol, or 3-(1 piperazinyl)propanol and (b) acylation of aminoalcohols obtained by the preceding method with chlorides of the corresponding aliphatic carboxylic acids. Preferred addition salts are succinates, maleates, hydrochlorides and methanesulphonates prepared by the respective neutralization reactions.
Patent CS-245946-B1 (CS)
Inventor: PALKOVIC JOSEF
IPC: B66C1/12
Filed: 1984-11-27
Abstract: Úkolem řešení je vyvinout ochranný
prostředek palet proti jejich poškození ,
a to závěsnými lany při manipulaci s nimi
zvedacím zařízením, na jehož hák jsou
závěsná lana zavěšena přímo.
Ochranný prostředek k danému účelu je
tvořen čtvercovým rámem /1/, jehož protilehlé
rohy jsou navzájem spojeny tuhými
tyčemi /2/, které přesahují svými konci
obrys čtvercového rámu /1/ a jsou na
svých koncích opatřeny zaoblenými vodícími
lištami /3/ závěsných lan /4/ zvedacího
zařízení.
Patent CS-254491-B1 (CS)
Inventor: NOVOTNY BOHUSLAV
IPC: F16H63/30
Filed: 1985-12-12
Abstract: Vodicí pouzdro ovládacího táhla umožňující
posuvný a otočný pohyb táhlu sestávající
z půleného ložiskového tělesa a
na vnější válcové ploše opatřeného drážkami
pro "O" kroužek a pojistný kroužek
a na ložiskovém tělese je vytvořena příruba
o kterou se opírá svou plochou kovový
nákružek. V ložiskovém tělese je vymezena
radiální vůle "O" kroužkem vytvářejícím
potřebné radiální předpětí vodícího
pouzdra.
Patent CS-218633-B1 (CS)
Inventor: KUBIK IVAN
IPC: B23B27/16
Filed: 1980-12-23
Abstract: Účelom vynálezu je zdražený nástroj s presadenou
režnou hranou s mechanicky upevněnými
režnými doštičkami pre sústruženie vnútomých,
připadne vonkajších rotačných ploch s obmedzeným
priestorom pre režné nástroje.
Tohoto účelu sa dosiahne tým, že zdražený
nástroj umožňuje v obmedzenom priestore sústra-
ženie dvoch ploch tým, že jedna režná hrána je
presadená voči druhej režnej hrané o uhol φ, čím
zaberá menší priestor pri zachovaní, připadne
i zvýšení trvanlivostných a životnostných charakteristik
reznej i funkčnej časti nástroja.
Patent CS-260529-B1 (CS)
Inventor: JANKOVSKY JOSEF
IPC: H01H3/16
Filed: 1986-12-15
Abstract: Řeěení se týká souprav pro povrchové
úpravy drobných součásti, které jsou umístěny
v bubnech částečně ponořených do lázní a
řeší zařízení pro přepínání kývavého pohybu
bubnů. Na nosné desce upevněné na rámu jsou
na čepech uloženy výkyvné dvouramenné páky.
Na jednom rameni pák jsou kladky doléhající
na kladkovou dráhu vytvořenou na povrchu
bubnu. Druhá ramena pák jsóu umístěna proti
mikrospínačům. Při otáčení bubnu najíždí
kladky na výstupky umístěné v koncových
částech kladkové dráhy. Tím vykyvují střídavé
dvouramenné páky a přes mikrospínače se
vysílají impulsy ke změně smyslu otáčení
poháněcího motoru. Řešení se využije u souprav
pro povrchové úpravy, u kterých bubny vykonávají
kývavý pohyb v lázni, zejména ve
strojírenství.
Patent CS-258441-B1 (CS)
Inventor: IVANNIKOV ANATOLIJ P
IPC: G01S13/95
Filed: 1984-12-05
Abstract: Zařízení pro indikaci turbulehce atmosféry
může být využito v jjadiolokaČní
meteorologii pro zjištění zon zvýšené
turbulence v mracích, ve srážkách a v jiných
meteorologických jevech. Účelem řešení
je zvýšeni přesnosti a operativnosti
měření charakteristik turbulentních pohybů
v meteorologických objektech. Zařízení
obsahuje kanál oddělení zóny zvýšené turbulence,
který se skládá z omezovače amplitudy,
zpožaovaoí linky, fázového detektoru,
periodického kompenzátoru a prahového
bloku; kanál oddělení Oblasti meteorologických
jevů, skládající se z amplitudového
detektoru, bloku regulace prahu a
prahového bloku; atenuátoř, klíč, střádač
a indikátor kruhového obzoru^ Zařízení má
také generátor'kalibřovaoích radiovýoh
impulsů, komutátor, tvarovač vzorků, klíč
a zařízení pro tvarování prahových napětí.
Patent CS-238405-B1 (CS)
Inventor: ILLES ANDREJ
IPC: G01R17/02
Filed: 1981-12-28
Abstract: Elektrické zapojenie obvodov priebežného
merača malých zmien prevádzkovej kapacity
koaxiálnych káblov v procese ich výroby,
ktorého vstupné obvody sú zapojené
ako izolované — plávajúce voči zemnému
potenciálu, pozostáva z izolovaného tónového
generátora (1), na ktorého výstup je
dvomi vstupmi (41, 42 j připojený izolovaný
selektívny diferenciálny zosilňovač (4)
tak, že prvým vstupom (41) je připojený cez
izolovaná na dve časti delenň elektrodu (2]
pre snímanie kapacity izolovaného vodiča
(9) a druhým vstupom (42) je zapojený cez
izolovaný vyvažovači kondenzátor (3). Na
výstup izolovaného selektívneho diferenciálneho
zosilňovača (4) je cez transformátor
(5) připojený usměrňovač (6), na ktorého
výstup je zapojený blok (7) analogového
vyhodnotenia a/alebo blok (8) digitálneho
vyhodnotenia.
Patent CS-256984-B1 (CS)
Inventor: FILIP MILOSLAV
IPC: C11D7/54
Filed: 1985-12-28
Abstract: Řešení může být použito při veškeré
výstavbě, kde se vyskytují na povrchových
úpravách rzivé skvrny, tj. ve stavebnictví,
bytovém hospodářství, údržbě bytového
fondu a jinde. Prostředek podle řešení je
tvořen sodným roztokem kyseliny fluorovodíkové
a její sodné nebo draselné soli.
Patent FI-104172-B1 (FI)
Inventor: ROBERTS DAVID ALAN
IPC: C07C205/58
Filed: 1990-09-10
Granted: 1999-11-30
Abstract: Compounds of formula <CHEM>  wherein R<1> represents: an optionally substituted alkyl, alkenyl, or alkynyl group ; or an optionally substituted cycloalkyl group; or an optionally substituted cycloalkenyl group ; or a group such as aryl, aralkyl, COOR<3>, COR<3>, CN, NO<2>, NR<3>R<4>, OR<5>, halogen atom. R2 represents a group such as NO<2>, CN, R<5>, S(O)mR<5>, SO2NR<3>R<4>, COOR<3>, COR<3>, CONR<3>R<4>, CSNR<3>R<4>, OR<5>, or alkyl substituted by OR<5>, or a halogen atom.  R<3> and R<4> represent H or an optionally substituted alkyl.  R<5> represents an optionally substituted alkyl  m represents zero, 1 or 2  n represents an integer from 1 to 5  p represents zero or 1 and agriculturally acceptable salts thereof. The herbicidal composition comprising these compounds and their application to crop protection.
Patent FI-101231-B1 (FI)
Inventor: PIETERSE JAN KAREL
IPC: C08K3/00
Filed: 1991-03-19
Granted: 1998-05-15
Abstract: PCT No. PCT/NL90/00096 Sec. 371 Date Mar. 19, 1991 Sec. 102(e) Date Mar. 19, 1991 PCT Filed Jul. 16, 1990 PCT Pub. No. WO91/01346 PCT Pub. Date Feb. 7, 1991.Thin self-supporting green compact, less than 25 mu  thick, containing an inorganic substance and as a binder a polymer with a weight average molecular weight of more than 400,000, which polymer in a suitable solvent can form a thermoreversible gel above room temperature, the volume fraction of the inorganic substance being more than 45% relative to the total amount of binder plus inorganic substance and a process to prepare such green compacts.
Patent FI-103333-B1 (FI)
Title: Pneumatic tyre
Inventor: OCHIAI KIYOSHI
IPC: B60C11/04
Filed: 1992-10-21
Granted: 1999-06-15
Abstract: The pneumatic tyre main running surface has two or more main peripheral grooves (G01,G02) and axial ones defining heel sections (SB) at opposite edges. Peripheral ribs (ES,S) at the edges divide the heel sections into two or more axial parts.The rib width is between 0.2 and 1.5 mm.
Patent IE-64067-B1 (IE)
Title: Benzylphosphonic acid tyrosine kinase inhibitors
Inventor: DOW ROBERT LEE
IPC: A61K31/66
Filed: 1991-03-28
Abstract: PCT No. PCT/US91/01731 Sec. 371 Date Sep. 16, 1992 Sec. 102(e) Date Sep. 16, 1992 PCT Filed Mar. 14, 1991 PCT Pub. No. WO91/15495 PCT Pub. Date Oct. 17, 1991.Certain benzylphosphonic acid compounds, and their pharmaceutically-acceptable salts, are inhibitors of tyrosine kinase enzymes, and so are useful for the control of tyrosine kinase dependent diseases (e.g., cancer, atherosclerosis).
Patent IE-40621-B1 (IE)
Title: Improvement in and relating to the production of compositearticles including an injection moulding
IPC: B29C45/14
Filed: 1974-05-17
Abstract: 1468817 Moulding composite articles AIRFIX INDUSTRIES Ltd 22 May 1974 [12 June 1973] 27981/73 Heading B5A [Also in Division B8] Apparatus for moulding an article, e.g. a lid, including a blank 1, e.g. of card, metal, paper, or plastics, having a periphery 6 injection moulded thereon, comprises a core tool 12 having an end face 28 to engage the blank, a first cavity tool 10 having a face opposed to the face 28 to engage the other side of the blank, and a peripheral face 25 to engage the periphery of the core tool, and in part define a cavity around the blank, the tools 10 and 12 being relatively movable, or guide 30 to feed blanks under gravity between the tools in the open condition, and an injector 23 opposite the end face of the core tool. In operation, blanks are fed in the guide 30, the tools are closed so that the blank periphery is deformed at 3 in a second cavity member 11, and the periphery around the blank is injection moulded. In Fig. 1 the apparatus comprises several moulding stations and a stop 33 holds blanks in the guide whilst first blanks are being moulded. The finishing article is removed by an ejector 19. The blank is retained on core face 28 by vacuum at a port 34.
[GB1468817A]
Patent IE-35501-B1 (IE)
Title: Herbicidal phosphonomethylglycine compounds and compositions containing them
IPC: A01N57/20
Filed: 1971-10-22
Abstract: 1366379 N-phosphonomethyl glycine and derivatives thereof MONSANTO CO 22 Oct 1971 [10 March 1971 9 Aug 1971] 49263/71 Heading C2P [Also in Division A5] Compounds of Formula I where R, R<SP>1</SP> and R<SP>2</SP> are each -OH; -NR<SP>4</SP>R<SP>5</SP> where R<SP>4</SP> and R<SP>5</SP> are each H, C 1-4 alkyl or hydroxyalkyl or C 2-4 alkenyl or R<SP>4</SP> and R<SP>5</SP> together with N form a heterocyclic ring; -OR<SP>3</SP> where R<SP>3</SP> is C 1-18 hydrocarbyl or hydrocarbyloxyhydrocarbyl optionally substituted by 1 to 3 halogen atoms, the hydrocarbyloxyhydrocarbyl groups also being optionally substituted by one or more hydrocarbyloxy groups, or a -C n H 2n -NR<SP>4</SP>R<SP>5</SP> group where n is 1 to 4; or -OR<SP>6</SP> where R<SP>6</SP> is alkali metal, alkaline earth metal, Cu, Zn, Mn, Ni, ammonium or organic ammonium, provided (i) that no more than 2 of R, R<SP>1</SP> and R<SP>2</SP> are selected from -NR<SP>4</SP>R<SP>5</SP> and -OR<SP>3</SP>, (ii) that when R<SP>6</SP> is arylammonium it is the cation of a primary amine, (iii) that no more than 2 of R, R<SP>1</SP> and R<SP>2</SP> are -OR<SP>6</SP> when R<SP>6</SP> is ammonium or organic ammonium, and (iv) that no more than 2 of R, R<SP>1</SP> and R<SP>2</SP> are -OH; and salts of the compound of Formula I in which R, R<SP>1</SP> and R<SP>2</SP> are each -OH with an acid having a pK of 2 5 or less are claimed per se. Compounds of Formula I, including the compound in which each of R, R<SP>1</SP> and R<SP>2</SP> is -OH (N-phosphonomethyl glycine), which compounds may be used as the active ingredients in conventional pesticidal compositions, may be prepared by phosphonomethylation of a glycine, by phosphite addition to azomethines or by oxidation of the corresponding phosphinic compounds. The amides and esters may also be prepared by reacting the corresponding acid halide or the methyl ester with the corresponding amine or alcohol. The salts may be prepared by partial or complete neutralization with the appropriate base.
[GB1366379A]
Patent IE-34177-B1 (IE)
Title: Process for the manufacture of tubular film having at least one longitudinal lane in which the wall thickness of the film is greater than the wall thickness of the remainder of the tubular film
IPC: B29C48/10
Filed: 1969-10-10
Abstract: 1,250,945. Locally thickened tubular film. VOOR TECHNO - COMMERCIELE SIGNALISATIE, IN HET KORT N.V. 16 Oct., 1969 [28 Aug., 1969], No. 50836/69. Heading B5B. A synthetic organic thermoplastic tubular film having at least one longitudinal zone of which the wall thickness is greater than that of the remainder of the film is made by melt extruding the tube from an annular die, subjecting the tube to primary cooling and inflating it, and locally cooling at least one longitudinal zone of the inflated and still plastic film to solidify this zone before cooling the remainder of the film. Cooling may be by a jet of pressurized air, the temperature and pressure of which are adjustable. Two opposite zones on the film may be cooled to equilibrate stresses.
[GB1250945A]
Patent IE-73450-B1 (IE)
Title: Optical waveguide laser
Inventor: SMITH KEVIN
IPC: H01S3/067
Filed: 1991-05-02
Abstract: A laser includes a soliton supporting waveguide of SiO2-Al2O3-P2O5 with an erbium doping level of 1100 ppm, the fibre having a core radius of 2.5 mu m and a core-cladding refractive index difference of 0.015 operated such that the solitons propagating in the waveguide have a soliton period greater than the amplification period of the laser.
Patent IE-37001-B1 (IE)
Title: Surface coatings
IPC: E01D19/08
Filed: 1972-12-11
Abstract: Plastic sheet material for use as a reinforcing layer in such bituminous sandwich structures as rollable sheet material especially for roof covering purposes and bituminous coatings on concrete bases especially trafficcarrying concrete surfaces.
[US3909144A]
Patent IE-42216-B1 (IE)
Title: Benzomorphane derivatives
IPC: C07D405/06
Filed: 1975-08-05
Abstract: 1513950 2 - Tetrahydrofurfuryl - 6,7 - benzomorphanes BOEHRINGER INGELHEIM GmbH 4 Aug 1975 [5 Aug 1974] 32576/75 Addition to 1496418 Heading C2C The invention comprises compunds of the formula wherein R is H, CH 3 or CH 3 CO and R 1 is CH 3 or phenyl, and acid addition salts thereof. They may be obtained by (1) reacting a compound of the formula with a compound of the formula wherein X is an atom or group removable as an anion; (2) reducing either a compound of the formula wherein Y is O or S; or a compound of the formula wherein R 2 is (C 1 -C 4 ) alkyl and A is an anion, of an organic or inorganic acid, of valency n; (3) reacting a compound of the formula wherein R 3 is an aralkyl radical with a base; (4) cyclizing a compound of the formula wherein Z is an atom or group removable as an anion; (5) cyclizing a compound of the formula wherein X is an atom or group removable as an anion, (6) when R is H, ester cleavage of a compound of the formula wherein R 4 is an acyl group derived from an inorganic or organic acid; or ether cleavage of a compound of the formula wherein R 5 is an alkyl or aralkyl group; (7) when R is acetyl, acetylation of a compound of Formula I above wherein R is H; and (8) when R is CH 3 , methylation of a compound of Formula I above wherein R is H. Diastereoisomers and racemic compounds may be separated by known methods. Pharmaceutical compositions comprise compounds of Formula I which have a pronounced analgesic effect in association with a pharmaceutical carrier or excipient, and may include other physiologically active compounds such as sedatives, hypnotics or tranquillizers. Compounds of Formula VIIa or VIIb may be obtained by alkylating a piperidine of the formula with an alkylating agent of Formula III. Compounds of Formula VIII may be obtained by reacting compounds of Formula II with γ- ketoacid esters of the formula and reducing the intermediate compound of the formula thus obtained with a complex hydride.
Patent IE-40024-B1 (IE)
Title: Improvements in or relating to apparatus for the application of strip material to cases, particularly to corrugated board cases
IPC: B31B50/72
Filed: 1974-09-09
Abstract: An apparatus for adhering strips of predetermined length that previously have been severed from a running web of material to folded blank boxes which includes cutting the strips to length, advancing them by a conveyor seriatim past an adhesive activation station and then coordinating the leading edge of the strip with the arrival of the folded blank box at a roller assembly station where the strip is secured to the box and then discharged.
[US3955481A]
Patent IE-64661-B1 (IE)
Title: New 4,5,7,8-Tetrahydro-6H-thiazolo[5,4-d]azepines their preparation and their use as pharmaceutical compositions
Inventor: GRELL WOLFGANG DR
IPC: C07D513/04
Filed: 1989-06-19
Abstract: The present invention relates to new 4,5,7,8-tetrahydro-6H-thiazolo[5,4-d]azepines of general formula II <IMAGE> (II)  wherein the substituents are defined herein below, which compounds have valuable pharmacological properties, namely selective effects on the dopaminergic system which are achieved by stimulating (predominantly D2) dopamine receptors.
Patent IE-49623-B1 (IE)
Title: Xanthine derivatives,pharmaceutical preparations containing these derivatives for use in the treatment of chronic obstructive airway disease and cardiac disease
IPC: A61K31/522
Filed: 1979-10-18
Abstract: A method for the treatment of chronic obstructive airway disease or cardiac disease, characterized by the administration of a compound of the formula wherein R is n-propyl, n-butyl or isobutyl or a therapeutically acceptable salt thereof.
Patent IE-60986-B1 (IE)
Title: Ostomy coupling
IPC: A61F5/448
Filed: 1987-07-30
Abstract: A three part ostomy coupling has a first part (10) having a flange (16), a central chute (18) and an array of space projections (20). A second part (12) has a peripheral seal (36) for engaging and surrounding the outer wall of the chute an outwardly projecting rim which can be snap fitted on the space projection. A third part (14) is rotatable to effect a positive lock between the rim the projections, for example by deforming the projections inwardly.
Patent IE-52824-B1 (IE)
Title: Method and apparatus for filling of flexible containers
IPC: B65B1/06
Filed: 1981-10-01
Abstract: A method and an apparatus for filling bulk material into flexible containers. The filling is carried out through a filling pipe or spout while the container is hanging on a hook. The impervious part of the container, which may be in form of an inner bag, is fastened around the spout and kept in place during the filling operation without any special fastening means. This is obtained by first hanging at least one lifting loop on the hook before the pipe is put into the container. Then the remaining loops are hooked onto the hook during simultaneous or subsequent filling of the container with air. The loops are secured together while the container is hanging on the hook. Thus, the container will be made ready for further transport as soon as it is filled and its impervious bag is closed. The apparatus comprises a batch weigher, storage bin having an outlet into a funnel with a pipe for supplying air. The funnel is connected to a filling pipe which is horizontally movable and placed close to a holding device comprising the hook which is movable both horizontally and vertically.
Patent IE-43993-B1 (IE)
Title: Support, intended to be used primarily as a christmas tree stand
IPC: A47G/
Filed: 1976-11-26
Abstract: 1536976 Stands B O ALMER and K G GIDLOF 26 Nov 1976 [9 Dec 1975] 49442/76 Heading A4H [Also in Divisions A6 and E1] A stand for a Christmas tree, road sign, sunshade, rod, &c. comprises a base 2 on which is an upstanding tube 4 containing a compressible body 5 having diametrically opposite holes to receive the end of the tree, &c, the body 5 being forced partially down into the tube to compress it. Turning a lever 11 fast with a shaft 9 engages a crank 10 on the shaft with an extension 7 of a ring 6 so that the ring is forced down about the compressible body 5 to clamp the tree, &c. The base 2 as shown has a peripheral wall 3 forming a container for water, sand, &c. The compressible body 5 is made from plastics.
Patent IE-55011-B1 (IE)
Title: Ground/working implement depth control system
IPC: G05G1/01
Filed: 1983-11-18
Abstract: The working depth of an implement attached to the 3-point hitch of a tractor is normally controlled by a draft load error signal formed as the difference between a load set point signal and an actual load signal provided by a draft sensor. For lowering the implement into the ground and raising it a depth position lever (50) actuates a transducer (54) to provide a position set point signal A(3) which is compared with an actual position signal from another transducer to form a position error signal. A large position error takes precedence over a smaller load error. In order to provide the load set point signal without the need for a separate lever, a swith (58, 60) is mounted on the lever (50) and, when depressed, causes the draft load set point signal to increase up to the desired value as the implement is lowered into the ground by pushing the lever (50) forwards.
Patent IE-63874-B1 (IE)
Title: Use of gamma-interferon for the treatment of vascular stenosis
Inventor: HANSSON GOERAN
IPC: A61P9/10
Filed: 1989-09-29
Abstract: The present invention relates to the use of gamma-interferon for the preparation of a pharmaceutical preparation for the treatment of vascular stenosis caused by e.g. intimal hyperplasia, including the treatment of restenosis following treatment of arterial stenosis or occlusion. In a preferred embodiment the present invention relates to the use of gamma-interferon for the treatment of arterial stenosis following vascular surgery and/or angioplasty.
Patent IE-60696-B1 (IE)
Title: Detergent compositions containing cellulase
IPC: C11D3/386
Filed: 1987-11-20
Abstract: Detergent compositions comprising detergent cellulases are disclosed. The compositions are formulated to provide a near-neutral or mildly-alkaline wash liquor pH. The compositions comprise a clay soil removal polymer and, optionally, a fabric-softening clay.
Patent IE-71640-B1 (IE)
Title: Improvements in chemical compounds
Inventor: MURRER BARRY ANTHONY
IPC: C07D257/02
Filed: 1990-12-20
Abstract: Pharmaceutical compositions containing as active ingredients a linked cyclic compound of the general formula I    Z - (A)n - Y (I)   in which Z and Y are independently polyheterocyclic moieties having from 9 to 32 ring members and from 3 to 8 amine heteroatoms, especially nitrogen, in the ring, A is a linking atom or group, and n is 0 or an integer from 1 to 6, are indicated for the treatment of viral infections, and preventative administration, especially for retroviral infections.