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| Patent # | Description |
|---|---|
| US-4,497,998 |
Temperature stabilized stop-restart oscillator A closed loop integrated circuit temperature stabilizer 10 has an on-chip temperature sensor 12 for supplying a voltage indication of temperature to an op amp 22... |
| US-4,497,997 |
Method and apparatus for metal arc welding with constant currents The invention relates to a process and an apparatus for metal arc welding with a consumable electrode. A pulsating current is supplied to the electrode from a... |
| US-4,497,996 |
Arc welding system with vision An arc welding system with image acquisition utilizing a non-planar beam of electro-magnetic radiation, such as, a hollow conical beam of light, to illuminate at... |
| US-4,497,995 |
Apparatus for continuously advancing and welding metal can bodies and
the like An apparatus is disclosed for continuously forming and laser welding metal can bodies and the like. The apparatus comprises a former for successively forming... |
| US-4,497,994 |
Contact device for resistance spot welder Means for making electrical contact with a pair of spot welding electrodes and workpieces engaged by the electrodes. The means includes two rigid insulating... |
| US-4,497,993 |
Door lock apparatus of electric cooker A door lock apparatus of an electric cooker has a handle movably supported by a door which is mounted on a housing of the cooker and capable of moving to... |
| US-4,497,992 |
Air circuit breaker The disclosure describes an air circuit breaker including a compression coil; a second spring holder to compress the compression coil in the axial direction... |
| US-4,497,991 |
Gas-blast switch A stationary contact element and a movable contact element are coupled to a drive unit. The movable contact element is surrounded by a co-movable blast nozzle... |
| US-4,497,990 |
Vacuum switch tube Vacuum switch tube, including a housing, a stationary and an axially movable contact being mutually aligned in the housing, a bellows vacuum-tightly connecting... |
| US-4,497,989 |
Electric mat switch An electric mat switch including a pair of outer wear layers, a pair of inner moisture barrier layers between the wear layers and a separator layer between the... |
| US-4,497,988 |
Handlebar switch A handlebar switch is disclosed having a thin, flat, circular switch body with a centrally disposed opening therein to accomodate the handlebar. The switch body... |
| US-4,497,987 |
Keyboard spacer A keyboard spacer for inhibiting the depression of selected push buttons upon a keyboard is shown including a longitudinal trunk having a first resilient arm... |
| US-4,497,986 |
Line switch assembly for a timing mechanism A timing mechanism has a rotating camstack which opens and closes electrical contacts that are carried by electrical contact blades which are actuated by the... |
| US-4,497,985 |
Line and program switch assembly for a timing mechanism An electrical contact blade is manually operated through an actuator to close a circuit to a main power supply and another electrical contact blade is operated... |
| US-4,497,984 |
Rotary switch assembly A rotary switch assembly comprises dielectric housing members stacked together, each of the housing members having electrical brush contact members extending... |
| US-4,497,983 |
Electrical hook switch A hook switch comprises a dielectric base member having series of stationary electrical contact members secured in aligned rows therein; the contact members in... |
| US-4,497,982 |
Input unit Input unit for electronic equipment, consisting of a body of insulating material with finger guides in which sensor contacts and pushbutton switches are... |
| US-4,497,981 |
Multi-driver loudspeaker A multi-driver loudspeaker assembly having high and low frequency transducers in which the high frequency transducer(s) is directly coupled to the diaphragm of... |
| US-4,497,980 |
Handsfree circuit for telephone instrument A handsfree or loudspeaking telephone circuit employing loudest speaker comparison for controlling the direction of transmission of speech signals. The circuit... |
| US-4,497,979 |
Method for processing essential lines in a communication system A telephone switching office having essential service protection is disclosed. As each service request is received it is put in a common queue. Periodically, and... |
| US-4,497,978 |
Method and apparatus for preventing overloading of the central
controller of a telecommunication system In telecommunication systems in which tasks are performed collectively and centralized by the processor of the central controller, the problem is encountered... |
| US-4,497,977 |
Automatic coordinate determining device having electrostatic shielding An automatic coordinate determining device has a coordinate tablet comprised of a plurality of conductive lines, and a hand-held probe positionable relative to... |
| US-4,497,976 |
Method for emitting additional information in conjunction with message
signals to be transmitted over a data... Additional information is transmitted, in conjunction with message signals which are transmitted over a data switching center belonging to a public switched... |
| US-4,497,975 |
Resistor and capacitor graded termination A termination is provided for terminating a high voltage DC cable. The termination has an outer annular insulator containing stacked capacitor elements for... |
| US-4,497,974 |
Realization of a thin film solar cell with a detached reflector The present invention is an optically enhanced solar cell having a detached reflector. The optically enhanced solar cell includes a semiconductor material... |
| US-4,497,973 |
Thermoelectric device exhibiting decreased stress A thermoelectric device exhibiting both structural integrity and decreased stress across the device notwithstanding the application of thermally cycled... |
| US-4,497,972 |
Process for the separation of ethylbenzene A process for separating ethylbenzene from a feed mixture comprising ethylbenzene and at least one xylene isomer. The mixture is contacted with an adsorbent... |
| US-4,497,971 |
Oxidative dehydrogenation and cracking of paraffins with a promoted
cobalt catalyst A paraffin or mixture of paraffins having from 2 to 5 carbon atoms is oxidatively dehydrogenated in the presence of a cobalt based catalyst composition which has... |
| US-4,497,970 |
Aromatics production This invention relates to a process for converting a feedstock comprising aliphatic or alicyclic hydrocarbons into aromatic hydrocarbons by bringing into contact... |
| US-4,497,969 |
Process for the production of catalysts based on crystalline
aluminosilicates and the use of catalyst so produced A process for the production of a catalyst based on a crystalline aluminosilicate having a silica to alumina molar ratio greater than 12:1 which is obtained by... |
| US-4,497,968 |
Multistage process for converting olefins or oxygenates to heavier
hydrocarbons A multistage technique for converting olefins to heavier hydrocarbons including a sorption prefractionation unit for separating olefinic feedstock into a sorbate... |
| US-4,497,967 |
Process for the preparation of ethanol from methanol, carbon monoxide
_and hydrogen An integrated process for the preparation of ethanol from methanol, carbon monoxide and hydrogen feedstock is disclosed; the process featuring the steps of... |
| US-4,497,966 |
Process for the preparation of nitrophenylalkanols Nitrophenylalkanols are prepared by hydroxyalkylation of nitrotoluene(s) by the reaction with an aldehyde in the presence of a solid catalyst prepared by... |
| US-4,497,965 |
Substituted phenoxyalkanetriones Substituted phenoxyalkanetriones and the use thereof for the control of weeds. |
| US-4,497,964 |
Process for production of N-acyl-.alpha.-amino acids A process for the production of an N-acyl-.alpha.-amino acid represented by the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4,... |
| US-4,497,963 |
Process for the preparation of an aliphatic, cycloaliphatic, and/or
aliphatic-cycloaliphatic di- and/or... A process for the preparation of an aliphatic, cyclo-aliphatic, and/or aliphatic-cycloaliphatic di- and/or polyurethane comprising the steps of A. reacting a primary... |
| US-4,497,962 |
Preparation of polysiloxane/polyoxyalkylene copolymer useful as
stabilizers in making polyurethane foams Polyorganopolysiloxane/polyoxyalkylene block copolymers suitable for use as stabilizers in making soft polyurethane foams, of the formula in which R is an optionally... |
| US-4,497,961 |
Process for the preparation of ranitidine The invention relates to a process for the preparation of ranitidine of formula (I) ##STR1## which comprises reacting a thiol of formula (II) ##STR2## ... |
| US-4,497,960 |
Chiral, optically active compounds useful as protective groups for
hydroxy, thiol and amino compounds The invention declares new chiral, optically active compounds of the general formula ##STR1## wherein a 5 or 6 membered lactol ring (E), with X and Y... |
| US-4,497,959 |
Substituted (4-hydroxyphenylthio) succinic anhydride or succinate
stabilizers Substituted succinic anhydride or succinate stabilizers of the formula I or II ##STR1## where R.sub.1 and R.sub.2 are independently alkyl, cycloalkyl,... |
| US-4,497,958 |
Process for oxidizing a carboxylic anhydride with heterogeneously
prepared vanadium-phosphorus-oxygen... A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This... |
| US-4,497,957 |
Process for preparing optically active tryptophans Biochemical optical resolution of DL-tryptophans in which DL-tryptophan amides are interacted with the culture products, or their treated products, of a... |
| US-4,497,956 |
Manufacture of antibiotics The invention provides crystalline (Z)-2-(2-t-butoxycarbonyl-prop-2-oxyimino-2-(2-triphenylmethylaminothiazol -4-yl)acetic acid in association with dioxan and its... |
| US-4,497,955 |
Preparation of 2-chloro-5-trichloromethyl pyridine from lower
chlorinated beta-picolines A non-catalytic liquid phase chlorination of lower chlorinated beta-picolines comprising 3-trichloromethyl pyridine, 2-chloro-5-dichloromethyl pyridine, or... |
| US-4,497,954 |
Cyclopentanone derivatives Certain substituted cyclopentanone ethylene ketal compounds, and ketones and amides derived therefrom are useful synthetic intermediates for compounds of... |
| US-4,497,953 |
Imido, amido and amino derivatives of mercaptoacyl prolines and
pipecolic acids Imido, amido and amino derivatives of mercaptoacyl prolines and pipecolic acids are useful for the treatment of hypertension. |
| US-4,497,952 |
Process for the production of
(.+-.)-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline
derivatives This invention discloses a process for the preparation of (.+-.)-4-oxo-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinoline derivatives which comprises... |
| US-4,497,951 |
Ethynyl-phenylene-substituted-1,3,5-triazine derivatives and process for
their production Acetylene terminated s-triazine oligomers are disclosed which polymerize into stable high temperature resins. The oligomers of this invention are readily... |
| US-4,497,950 |
Benzotriazine compounds This application relates to the use of certain dihydro-benzotriazine compounds as photographic silver halide developing agents and to photographic processes,... |
| US-4,497,949 |
Process for the manufacture of cephalosporin derivatives The invention relates to a process for the manufacture of a cephalosporin derivative of the formula I: ##STR1## in which X is a sulphur or oxygen atom or a... |
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