baber/WOPTO huggingface dataset:
Patent EP-0105675-A3 (EP)
IPC: B64C1/20
Filed: 1983-09-22
Abstract: A restraining fitting suitable for use with a mating track 
member affixed to a flat surface includes an upper portion 
having a ring affixed thereon suitable for receiving restrain­
ing straps or, alternatively, may include a bracket for 
receiving other mechanisms such as seat legs, shelves, etc., 
on its upper surface. The lower portion includes depending 
protrusions adapted to be received into and cooperate with 
bore holes provided in the track member. A lower member 
formed to be slidably retained by the upper member 
provides displacement of the depending protrusions locking 
the restraining fitting in the mating track member without 
requiring movement of the upper member from its initial 
position.
Patent EP-0102885-A3 (EP)
Title: Process for the surface halogenation of polymeric or metallic materials
IPC: C08J7/12
Filed: 1983-08-02
Abstract: The invention deals with a process for the surface halogenation of polymeric or metallic materials. 
<??>This process comprises:
 introducing the material into a chamber;
 heating the chamber and the material to a selected temperature in the range of 38 DEG C to 93 DEG C by recirculating the air through a heat exchanger; evacuating the system; introducing a halogen into the system in an amount (i) of up to about 10 percent in excess of the theoretical amount of halogen required to halogenate the material to a desired depth and (ii) sufficient to provide a partial absolute pressure in the system in the range of 0.007 x 10<5> Pa to 0.21 x 10<5> Pa absolute;
 introducing an inert gas into the system in an amount sufficient to provide a total pressure in the system of about one atmosphere;
 maintaining the selected temperature by recirculating the halogen/inert gas mixture through the heat exchanger;
 recirculating the halogen/inert gas mixture a sufficient number of times to reduce the amount of halogen to less than about 5 percent of the amount of halogen initially introduced into the system;
 evacuating the system;
 introducing air into the system to provide about atmospheric pressure; and
 removing the material.
Patent EP-0124687-A3 (EP)
IPC: A47K5/02
Filed: 1984-02-09
Abstract: Es wird eine Seifenverpackung (1) angegeben, die aus 
einem Muldenteil (2) und einem Deckelteil (3) besteht, die 
vorzugsweise fest miteinander verbunden sind und die 
gegeneinander verschwenkbar sind Zweckmäßig ist eine 
feste, jedoch lösbare Verbindung zwischen dem Muldenteil 
(2) und dem Deckelteil (3) vorgesehen, die ein Öffnen der 
Seifenverpackung (1) und damit eine Entnahme einer darin 
abgelegten Seife erste nach Ausüben einer bestimmten Zug­
kraft ermöglicht und mittels der ein Wiederverschließen der 
Seifenverpackung (1) möglich ist. Dazu eignet sich vorzugs­
weise eine federnde Verrastung zwischen Muldenteil (2) und 
Deckelteil (3) wie durch eine Vertiefung (18) mit Rücksprung 
(19) in dem einen und eine dazu kongruente Erhebung (21) mit 
Vorsprung (22) in dem anderen der beiden Teile. Die Seifen­
verpackung (1) ist vorzugsweise aus einer Kunststoffolie in 
einem einzigen Arbeitsgang geformt, wobei Einkerbungen (6) 
wie Einschnitte, Wanddickenverdunnungen, Einprägungen 
oder dergleichen zum Erreichen der Verschwenkbarkeit vor­
gesehen werden können. Nach Einlegen der Seife genügt es, 
den Deckelteil (3) über den Muldenteil (2) zu klappen, um das 
Verschließen der Seifenverpackung (1) zu erreichen. Die 
Seifenverpackung (1) kann in einfacher Weise mit Werbung 
oder dergleichen versehen werden.  
     Zur Vermeidung des Sumpfens der Seife können Löcher, 
Profilstege oder velourartige Aufrauhungen in zumindest 
dem die Seife aufnehmenden Abschnitt des Muldenteils vor­
gesehen sein.
Patent EP-0129186-A3 (EP)
Title: Azole derivatives
IPC: C07D249/08
Filed: 1984-06-12
Abstract: 1. Claims for the Contracting States : BE CH DE FR GB IT LI NL SE An azole compound of the formula I  see diagramm : EP0129186,P30,F3 where R**1 is an alkylene chain of 3 to 10 carbon atoms which may be substituted by 1 to 3 C1 -C3 -alkyl radicals, R**2 is hydrogen, halogen, C1 -C4 -alkyl, C1 -C4 -haloalkyl, C1 -C4 -alkoxy, C2 -C5 alkenoyl, C1 -C4 -alkylthio, C1 -C4 -alkylsulfinyl, C1 -C4 -alkylsulfonyl, trifluoromethyl, cyano, phenoxy or benzyloxy, m is 1, 2 or 3, X is CH or N, and Z is carbonyl or the group, CR**3 OR**4 , where R**3 is hydrogen, C1 -C4 -alkyl or C2 -C4 -alkenyl and R**4 is hydrogen, C1 -C4 -alkyl, C2 -C4 -alkenyl, C2 -C4 -alkynyl, C1 -C4 -alkenoyl or benzyl, and their plant-tolerated acid addition salts and metal complexes. 1. Claims for the Contracting State : AT A fungicide containing an azole compound of the formula I  see diagramm : EP0129186,P32,F1  where R**1 is an alkylene chain of 3 to 10 carbon atoms which may be substituted by 1 to 3 C1 -C3 -alkyl radicals, R**2 is hydrogen, halogen, C1 -C4 -alkyl, C1 -C4 -haloalkyl, C1 -C4 -alkoxy, C2 -C5 -alkenoyl, C1 -C4 -alkylthio, C1 -C4 -alkylsulfinyl, C1 -C4 -alkylsulfonyl, trifluoromethyl, cyano, phenoxy or benzyloxy, m is 1, 2 or 3, X is CH or N, and Z is carbonyl or the group, CR**3 OR**4 , where R**3 is hydrogen, C1 -C4 -alkyl or C2 -C4 -alkenyl and R**4 is hydrogen, C1 -C4 -alkyl, C2 -C4 -alkenyl, C1 -C4 -alkynyl, C1 -C4 -alkenoyl or benzyl, or their plant-tolerated acid addition salts or metal complexes.
Patent EP-0133884-A3 (EP)
IPC: B60B21/10
Filed: 1984-06-15
Abstract: Die Erfindung bezieht sich auf ein Fahrzeugrad, das für 
einen Notlauf geeignet ist. Um den Reifen bei einem Notlauf 
besser zu schützen, wird eine Gleitmittelschicht vorge­
schlagen, die außer Silikonöl als weiteren Bestandteil Ruß 
enthält.
Patent EP-0132761-A3 (EP)
IPC: F02K1/12
Filed: 1984-07-17
Abstract: Strahlaustrittsdüse für Gasturbinenstrahltriebwerke, 
Rafetentriebwerke oder dergleichen, welche Klappensysteme 
(6, 6′) zur Konvergent-Divergenteinstellung des Düsen­
querschnittes und zur Schubvektorsteuerung in einer Ebene 
besitzen und ferner Klappen (18, 18′) zur Schubvektor­
steuerung in einer zur ersten Ebene senkrechten Ebene.
Patent EP-0138232-A3 (EP)
Title: Composition for producing plastic or hard materials for the dental industry, (dental) medicine and related use, process for its preparation and its use
IPC: A61K6/884
Filed: 1984-10-18
Abstract: 1. Claims for the Contracting States : BE CH DE FR GB IT LI LU NL SE Composition for the preparation of plastic or hard materials for dental technical, (dental) medical and related purposes, which includes a thermoplastic material and ordinary additives, characterised in that the said composition also contains 0.05 to 10 wt.% jojoba oil. 1. Claims for the Contracting State : AT Process for the production of a preparation for plastic or hard compositions for dental technical, (dental) medical and related purposes, which includes a thermoplastic material and ordinary additives, characterised in that the said composition also contains 0.05 to 10 wt.% jojoba oil.
Patent EP-0117701-A3 (EP)
IPC: F16J15/43
Filed: 1984-02-20
Abstract: A single-stage, ferrofluid magnetic seal apparatus compri­
ses an annular, permanent-magnet ring element (12) adapted 
to surround a shaft (18) to be sealed, which shaft extends be­
tween first low pressure and second high-pressure; first and 
second pole pieces (14, 16) in a magnetic-flux relationship 
with the permanent magnet, and having one and the other 
ends, the other end extending into a close, noncontacting rela­
tionship with the surface of the shaft, to define a radial gap 
therebetween; a plurality of stages (24) formed in the radial 
gap under the other end of the second pole piece (16), which 
pole piece is placed toward the high-pressure side of the envi­
ronment, and the radial gap (26) under the first pole piece (14), 
placed toward the low-pressure side of the environment, being 
shallow and generally less than about 2 mils (0.05 mm); and 
ferrofluid (20) in the radial gap under the other end of the 
second pole piece to form a plurality of separate O-ring ferro­
fluid seals of defined pressure capacity, thereby providing a 
single-stage, ferrofluid magnetic seal apparatus which has a re­
duced tendency to permit unpredictable air bursts, when in­
stalled about the rotary shaft between first and second pres­
sure environments.
Patent EP-0124998-A3 (EP)
IPC: C01B33/20
Filed: 1984-03-29
Abstract: This invention relates to novel porous zincosilicates hav­
ing a Theta-1 type structure and to a process for preparing the 
same. The zincosilicates can be loaded with catalytic compo­
nents e.g. gallium oxide and can be used with or without the 
catalytic components to catalyse a number of hydrocarbon 
conversion reactions, dehydration reactions and for the con­
version of synthesis gas to hydrocarbons.
Patent EP-0131371-A3 (EP)
IPC: G01N29/26
Filed: 1984-06-04
Abstract: An ultrasonic scanning probe 10 for inspecting structures 
for internal defects and providing a plan position display 
comprises a transducer 70 mounted within a block 12 of ultra­
sonically absorbent material, such as polyethylene, adjacent 
to a window 30 which may be placed in contact with a surface 
of the structure. The block 12 is turnable about a rotation axis 
normal to the window 30, while the transducer 70 is oriented 
at an angle to the axis so as to scan a sector of the surface as 
the block 12 is turned, and an attenuating coupling medium 
160 occupies the space between the transducer 70 and the 
window 30. The scanning probe 10 may be used in wet or dry 
situations.
Patent EP-0150703-A3 (EP)
IPC: B60B25/16
Filed: 1984-12-19
Abstract: Gegenstand der Erfindung ist eine zwei- oder mehrteili­
ge Felge, insbesondere für Schrägschulterreifen, die zu­
mindest zwei Elemente enthält, die an um den Umfang der 
Felge verteilten Stellen (3,5) in Axialrichtung der Felge in­
einandergreifen, wobei diese Stellen einen bestimmten 
Winkelbereich der Felge umfassen, wobei durch das gegen­
seitige Bewegen dieser zwei Elemente ein Sperren bzw. 
Lösen dieser Elemente erreicht wird, wobei eine radiale 
und axiale, vorzugsweise um 360° der Felge sich erstrecken­
de, Abstützung (1) für den Reifen im abschliessbaren Be­
reich der Grundfelge (6) in einstückiger Form vorliegt, wel­
che Abstützung - in Umfangsrichtung der Felge gesehen - 
zumindest einmal eine Unterbrechung (13) aufweist.
Patent EP-0151537-A3 (EP)
IPC: E21B10/56
Filed: 1985-01-30
Abstract: An elongate cutter 14 for a drag-type drill bit includes a 
stud defining one end thereof and a cutting formation 
comprising a cutting face 16 generally adjacent the other 
end. Length extends from one end to the other, depth 
extends generally transverse to the cutting face 16, as well as 
transverse to the length, and width extends transverse to 
both length and depth. The stud has a cross section 
transverse to its length such that the cross section cannot be 
circumscribed by a reference circle C1 whose diameter is 
equal to the maximum width of the cross section. The cross 
section also has an assumed section modulus, in the 
direction of depth, greater than that of the reference circle. 
The leading side of the cutter 14 may comprise a first planar 
zone adjacent the one end and a second planar zone adjacent 
the other end, and on which the cutting formation is carried. 
The maximum lateral dimension of the leading side is 
generally greater than or equal to the maximum width of the 
cutter.
Patent EP-0180416-A3 (EP)
IPC: C07C65/40
Filed: 1985-10-24
Abstract: A benzoic acid derivative of the formula: 
  
wherein R¹ and R² independently stand for a hydrogen atom, 
a lower alkyl group, or, they form, together with the adjacent 
nitrogen atom, a 5- or 6-membered heterocyclic ring, n denotes 
an integer or 2 to 4 and X stands for a halogen atom or a salt 
thereof, has excellent antiasthmatic and antiinflammatory ac­
tivities and therefore is useful as an antiasthmatic or antiinflam­
matory agent for a mammalian animal.
Patent EP-0202442-A3 (EP)
Title: Device for controlling the heating element in a binding device
IPC: B42C9/00
Filed: 1986-04-04
Abstract: 1. Device for controlling the heating element in a binding device for the binding of loose sheets in covers, which are provided with a thermoplastic adhesive on their spine, with a switch for switching on the heating element and with a timer, which can be switched on at a high temperature at the beginning of the binding cycle and which indicates the end of the binding cycle by means of a signal, characterized in that, to detect the temperature of the heating element, a temperature sensor is provided, which is connected via an electronic circuit to the timer in such a manner that it switches the timer on automatically and only when the heating element is at or above a given, high temperature.
Patent EP-0203488-A3 (EP)
IPC: C07D401/04
Filed: 1986-05-17
Abstract: Die vorliegende Erfindung betrifft neue 7-Azolyl-1-cyclo­
propyl-1,4-dihydro-4-oxo-3-chinolincarbonsäuren und -1,8-­
naphthyridin-3-carbonsäuren und ihre pharmazeutisch ver­
wendbaren Hydrate, Salze und Ester, Verfahren zu ihrer Her­
stellung sowie diese enthaltende antibakterielle Mittel.
Patent EP-0226170-A3 (EP)
IPC: B27N1/00
Filed: 1986-12-09
Abstract: A process is provided for producing a molded wooden 
product from a fibrous wood mixture made of wood fibers, 
binder, water-repelling agent, and other additives. The fib­
rous mixture is placed in a heated compression mold directly 
or after forming into a mass of predetermined shape and then 
placing the mass into the compression mold. The wood fiber 
(fibrous mixture) are then hot-compression molded to form 
the molded wooden product. During the compression step, 
air and gases are evacuated and vented from the mold cavity 
through various air passages formed in the mold.
Patent EP-0229393-A3 (EP)
Title: Water-in-oil emulsion
IPC: C08J3/02
Filed: 1986-12-28
Abstract: 1. Water-in-oil (W/O) emulsion that contains a liquid non-miscible with water, hydrosoluble monomers and/or polymers, water and an emulsifier combination, characterized in that the emulsifier combination comprises at least one alkylpolyglykolether-carboxylic acid or alkylphenolpolyglykolether-carboxylic acid of HLB-value smaller than 7.
Patent EP-0206382-A3 (EP)
IPC: F15B11/22
Filed: 1986-05-23
Abstract: A hydraulic system for lifts provided with two independently 
supported parallel platforms comprises at least two cylinder-­
piston units (80, 81) for raising the platforms, a metering 
device (7) for feeding identical quantities of fluid to said two 
units, and a balancing device (74, 75) operated by means (31, 32) 
for measuring the height difference between the platforms and 
arranged to feed a quantity of supplementary fluid to that 
cylinder-piston unit (80) or (81) operating the lower platform by 
withdrawing it from that cylinder-piston unit (81) or (80) 
operating the higher platform.
Patent EP-0187720-A3 (EP)
IPC: C02F1/465
Filed: 1986-01-10
Abstract: In a method and apparatus for removing impurities from 
a liquid, the liquid containing impurities is supplied to an 
electrolytic bath at a pressure higher than atmospheric 
pressure. Electrolysis is performed by applying a voltage to 
electrodes consisting of a metal which easily dissolves upon 
electrolysis. The liquid is then exposed to atmospheric 
pressure, and is treated in a flotation separation tank. Fine 
bubbles formed during the treatment of the liquid in the 
flotation separation tank attach to the impurities flocculated 
in the liquid by electrolysis. The flotation separation of the 
flocculated impurities is performed very efficiently, and 
high-purity water can be recovered.  
The apparatus comprises an electrolytic bath (3) consisting 
of a pressure vessel, in which electrodes of a metal which 
easily dissolves upon electrolysis are housed, and a constant 
current source for applying a voltage to said electrodes so as 
to obtain a predetermined current density in a liquid 
contained in said electrolytic bath, wherein impurities in the 
liquid are caused to flocculate by a hydroxide of the metal.
Patent EP-0197631-A3 (EP)
Title: Dry blend concentrate of solid biocide and thermoplastic resin powder and method for its preparation
IPC: A01N25/10
Filed: 1986-02-12
Abstract: A composition comprising a dry blend mixture of a porous thermoplastic resin powder and from 1 to 80 wt. % of a microbiocide based upon the weight of the composition. The microbiocide is present in the mixture at a concentration of at least about 20 times greater than the normal upper usage concentration of the microbiocide, and is held within the pores of the thermoplastic powder. The resulting concentrate is a substantially non-dusting, free-flowing powder which is readily incorporated into a second thermoplastic resin to produce a resulting article having the appropriate level of microbiocide.
Patent EP-0195540-A3 (EP)
IPC: B29C48/10
Filed: 1986-02-27
Abstract: An improved method for the production of polyolefin film 
by extruding molten film from an annular die in a tubular form 
into an extrusion zone is disclosed wherein the physical 
properties of the film are enhanced by controlling polymeric 
crystalline growth. The method comprises providing a liquid 
quench medium maintained at a constant temperature range in the 
extrusion zone immediately adjacent the annular die, extruding 
the molten film directly into the liquid quench medium, and then 
orienting the quenched film in a tubular bubble whereby the size 
and amount of crystalline growth is controlled.
Patent EP-0213697-A3 (EP)
IPC: C08G65/26
Filed: 1986-06-24
Abstract: The invention relates to polyether polyols having an aver­
age hydroxyl value in the range of 100 to 250 MgKOH/g, which 
are alkoxylated derivatives of a polyhydric alcohol being a 
mixture of compounds according to formula (I) or/and (II) 
  
or (II) 
  
wherein R¹ is H, CH₃ or OCH₃,  
R² is H, CH₂OH or CH₂ C(CH₂OH)₃, and  
R³ and R⁴ are  
H, CH₂OH or CH₂OCH₃
Patent EP-0241644-A3 (EP)
IPC: H01M10/052
Filed: 1987-01-24
Abstract: Galvanische Hochenergiezellen mit negativen Leichtmetallelektroden (Li) ent­
halten als Elektrolytbestandteil häufig Lösungsmittel, darunter Äther, die 
aufgrund nachbarständiger Gruppen -0-, =CO oder =N- aktivierte C-H-Bindun­
gen aufweisen und zur Bildung explosibler Peroxide neigen. Stabilisator-Zu­
sätze zum Elektrolyten in Mengen von ca. 100 ppm, neben anderen alkyl­
substituierten Phenolen namentlich die Substanz 2,6-Di-tert-butyl-4-methyl-­
phenol oder leicht oxidierbare schwefel- bzw. phosphororganische Verbindun­
gen wie Trimethylphosphit, verhindern diesen Prozeß und machen eine ge­
fahrlose Handhabung der Zellen auch unter ungewöhnlichen Betriebsbedin­
gungen (z.B. lange Überladung bei hohem Strom) möglich.
Patent EP-0239768-A3 (EP)
Title: Measuring device measuring device
IPC: G01B11/02
Filed: 1987-02-18
Abstract: In a measurement device for measuring the relative position of two objects, a scale (M1) is scanned by a scanner unit with a scanning plate (AP1) and a photocell plate (PP1). The scale (M1) has graduations (T) and identical reference marks (R1n) equispaced (spacing d) in the direction of measurement X and precisely coordinated with these graduations (T). On the scanning plate (AP1) there are two sets of reference scanning graduations (RAT1a, RAT1b) and on the photocell plate (PP1) two reference photocells (RP1a and RP1b) with the same mutual spacing (d). To select a reference mark (R1x) required for the measurement an ineffective reference mark (R1u) is provided adjacent to the latter. If two unselected reference marks (R1n-1, R1n) are scanned and one unselected reference mark (R1n) and the selected reference mark (R1x), two reference signals of opposite polarity are generated, additive superimposition of which produces a resultant reference signal that cannot be evaluated; only when the selected reference mark (R1x) and the ineffective reference mark (R1u) are scanned is a reference signal (RS1x) generated which gives a resultant reference signal (RRS1x) that can be evaluated. <IMAGE>
Patent EP-0258794-A3 (EP)
IPC: H01L21/027
Filed: 1987-08-25
Abstract: Disclosed are the probes (P) of an air gauge 
(10) with diffusers (D) which when brought into close 
relationship with a wafer (W) serve to reduce the 
velocity of the air (A) escaping from the periphery of 
the diffusers (D) to the point where, instead of a 
creating a vortex (V), any loose or floating particulate 
matter is blown off the wafer (W). Each diffuser (D) 
comprises a flat circular plate (22) affixed to, or 
forming a part of, the probe (P) substantially coplanar 
with the probe's exit orifice (20) thereby effectively 
increasing the diameter of the probe (P) at the interface 
with the wafer (W).
Patent EP-0261439-A3 (EP)
Title: Medicament for curing arteriosclerosis, comprising pyrimido (2,1-b) benzothiazole derivative
IPC: A61K31/505
Filed: 1987-08-27
Abstract: A medicament for curing arteriosclerosis which comprises pyrimido [2,1-b] benzothiazole derivative.
Patent EP-0260653-A3 (EP)
Title: High-efficiency heating unit for producing hot water
IPC: F24H1/18
Filed: 1987-09-15
Abstract: High-efficiency heating unit for producing hot water, which includes in combination a heat pump (1) which exploits the thermal energy of the sun and/or that of the environmental air for heating water or for producing sanitary water, namely warm water, and an electric burner or boiler (2) for possible supplementary heating of the heated water or water preheated by the heat pump and designed either to be supplied to a heating system or for sanitary use.
Patent EP-0272693-A3 (EP)
IPC: A61K31/451
Filed: 1987-12-22
Abstract: 1,4-Dihydropyridines of formula I: 
  
wherein:  
- X is a -CO₂R₁, cyano, nitro, -COCH₃ group;  
- R and R₁, that can be the same or different, are a 
primary, secondary or tertiary, saturated or 
unsaturated, linear or branched C₁-C₆ alkyl group that 
can be substituted or not by one or more hydroxy, 
C₁-C₇-monoalkylamino, di-C₁-C₇-alkylamino, benzylamino, 
C₁-C₆-alkoxy, phenoxy groups optionally substituted by 
one or more C₁-C₆ alkyl, C₁-C₆ alkoxy, halo-C₁-C₆ 
alkyl, halo-C₁-C₆-alkoxy, halogen, nitro, cyano, C₁-C₆ 
alkoxycarbonyl, C₁-C₆ alkylthio, NHCOR₅, SO₂R₆, 
C₁-C₄-alkylamino , di(C₁-C₄)alkylamino, hydroxy.  
- R₂ is hydrogen;  
- R₃ is hydrogen or a hydroxy, -OCOR₅, OSO₂R₆, azide, 
amino, -NHPO(OR₇)₂, -NHCOR₅ group, a C₁-C₄-alkoxy group 
 
 
or a fluorine, chlorine, bromine or iodine atom, a SH 
group, a SCOR₆ or a C₁-C₆-alkylthio, phenylthio or 
benzylthio group;  
- R₄ is an optionally substituted aromatic or an 
optionally substituted 5- or 6-membered heteroaromatic 
group, containing one or more heteroatoms selected in 
the group of N,S,O, wherein the substituent is selected 
from one or more hydroxy, C₁-C₇-monoalkylamino, 
di-C₁-C₇-alkylamino, benzylamino, C₁-C₆-alkoxy, phenoxy 
groups optionally substituted by one or more C₁-C₆ 
alkyl, C₁-C₆ alkoxy, halo-C₁-C₆ alkyl, halo­
-C₁-C₆-alkoxy, halogen, nitro, cyano, C₁-C₆ 
alkoxycarbonyl, C₁-C₆ alkylthio, NHCOR₅, SO₂R₆, 
C₁-C₄-alkylamino , di(C₁-C₄)alkylamino, hydroxy;  
- Y is one or more substituents, that can be the same or 
different, selected in the group of C₁-C₄-alkoxy, 
halogen, nitro, cyano, C₁-C₆-alkoxycarbonyl, C₁-C₆-al­
kylthio, halo-C₁-C₆-alkyl, halo-C₁-C₆-alkoxy, NHCOR₅ or 
NHSO₂R₆;  
- R₅ is hydrogen or a C₁-C₄-alkyl, trihalomethyl, 
C₁-C₄-alkoxy or phenyl group, optionally substituted by 
one or more nitro, halogen, C₁-C₄ alkyl, C₁-C₄-alkoxy, 
amino groups;  
- R₆is hydrogen or a C₁-C₄-alkyl, trihalomethyl, phenyl 
or p-methylphenyl group;  
- R₇ is a C₁-C₄-alkyl group or a phenyl group;  
are useful as antihypertensive, cytoprotecting or 
anti-ulcer agents.