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Patent # Description
US-4,918,041 Catalyst for hydrocarbon conversion and conversion process utilizing the same
A sulfated calcined solid catalyst is provided which comprises (1) oxide or hydroxide or Group III or Group IV, e.g. zirconium, metal, (2) oxide or hydroxide or...
US-4,916,793 Straightening of unibody frames
An anchor assembly for use in straightening unibody frame rails comprises a weld plate having at least one internally threaded sleeve projecting from a face of...
US-4,916,101 Method of preparing heteropolyacid catalysts
Polyoxoanions are converted to the corresponding heteropolyacids by conversion to their tetrabutylammonium salt followed by pyrolysis.
US-4,910,683 Method and apparatus for fractional double buffering
A user, through the use of an input device, provides signals indicative of x,y and z coordinates to a host central processing unit (CPU). The x,y and z...
US-4,908,780 Anti-aliasing raster operations utilizing sub-pixel crossing information to control pixel shading
A method and apparatus for performing anti-aliasing of rendered lines, text and images displayed by a workstation on a video display. The anti-aliasing is...
US-4,907,176 Flag generation system
An engine analyzer includes an A/D converter for sampling analog data from an engine under test and developing digital data consisting of 11 magnitude bits and a...
US-4,907,174 Z-buffer allocated for window identification
Apparatus and methods for displaying two and three dimensional graphics within a plurality of windows on a display system. The display system includes a central...
US-4,906,672 Blowing agents for polyurethane foam
Improved methods are provided for incorporating carbon dioxide and carbon dioxide generating compounds into polyurethane foam forming compositions as blowing...
US-4,905,766 Adapter for plastic pipe
This invention relates to an adaptor for connecting a non-metallic pipe to a threaded metallic element, such as a sprinkler head, in leak-tight fluid ...
US-D306,456 Pocket calculator
US-D306,397 Caster for a chair
US-D306,288 Keyboard
US-4,903,220 Dual ported speed up memory in ROM location for engine analyzer
An IBM-compatible computer based engine analyzer includes a RAM memory in a ROM cartridge location. A data acquisition system operates substantially ...
US-4,903,219 Method of identifying flag bits
A technique for determining and resetting one or more flags in a digital word in memory in which the flags comprise added bits in known locations different from...
US-D306,199 Cover plate for a filter cartridge for a spa or swimming pool water filter
US-4,900,871 Hydrocarbon oxidations catalyzed by iron coordination complexes containing a halogenated ligand
Hydrocarbons, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidized with air or O.sub.2 to form such products as alcohols,...
US-4,898,989 Alkane oxidation process
Alkanes are catalytically oxidized using site-specific framework substituted heteropolyacid or a polyoxoanion thereof.
US-4,895,987 Phosphonite-and phosphonite-promoted ruthenium - cobalt catalysts for the dealkoxyhydroxymethylation of acetals...
Ruthenium-cobalt- or cobalt-containing catalysts which have been promoted with phosphonites or phosphinites effectively catalyze the dealkoxyhydroxymethylation...
US-4,895,818 Phosphonite-and phosphinite-promoted ruthenium - cobalt catalysts for the dealkoxyhydroxymethylation of acetals...
Ruthenium cobalt- or cobalt-containing catalysts which have been promoted with phosphonites or phosphinites effectively catalyze the dealkoxyhydroxymethylation...
US-4,895,682 Hydrocarbon oxidations catalyzed by azide-activated metal coordination complexes
Hydrocarbons, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidixed with air or O.sub.2 to form such products as alcohols,...
US-4,895,680 Hydrocarbon oxidations catalyzed by nitride-activated metal coordination complexes
Hydrocarbon, and particularly lower molecular weight alkanes and cycloalkanes, may readily be oxidized with air or O.sub.2 to form such products as alcohols,...
US-4,890,270 Method and apparatus for measuring the speed of an integrated circuit device
A circuit for detecting manufacturing deficiencies in semi-conductor devices and selecting marketable chips comprises a speed circuit to determine the speed at...
US-D305,134 Hand powered scooter
US-D304,881 Combined carrying bag and radio
US-4,884,266 Variable speed local area network
A local area network is disclosed including apparatus and methods for transmitting data between a plurality of data processing resources (agents) coupled to a...
US-4,884,198 Single cycle processor/cache interface
An improved interface between a processor and an external cache system, having particular application for use in high speed computer systems. A cache memory for...
US-D304,823 Computer housing
US-4,882,436 Semi-polar hyperdispersants for pigment bases
Quaternized oligourethanes, useful as dispersing agents in preparing high-solids pigment concentrates for use in manufacturing inks, especially inks intended for...
US-4,881,651 Rotatable organizer with integral pivot nub and peripheral reduced area contact nubs
A rotatable organizer includes a container having a circular flat bottom, a circumferential cylindrical side wall secured at the outer periphery of the flat...
US-4,881,353 Cubicle
A toilet cubicle having a pair of post engaging side panels bracketed to a rear wall and a top headrail engaging the side panels have doors rotatably joined in...
US-4,881,183 Method and apparatus for emission testing
A computerized emissions tester determines concentrations of HC, CO, and CO2 in exhaust emissions. An IR test bench assembly develops an analog voltage...
US-4,879,451 Laser cut video display terminal filter screen
A filter screen for a video display terminal is formed by ablating a sheet of plastic material with an excimer laser beam to produce desired apertures in the...
US-4,877,920 Process for removing arsine impurities in process streams
A process for removing arsenic contaminants from a hydrocarbon fluid by contacting the fluid with copper oxide supported on activated carbon.
US-4,875,311 Beam construction
A simulated beam construction comprises a rectangular elongated core member with several laterally arranged prongs or barbs. Wooden, laminated wooden or plastic...
US-4,872,916 Phosphate ester pigment dispersant
An aqueous pigment dispersion containing as the dispersing agent a phosphate ester salt having the general formula: ##STR1## wherein: R and R' are the same...
US-4,872,004 Plural source arbitration system
The plural source arbitration system relates generally to communications systems for linking peripheral devices to a computer. Specifically, the arbitration...
US-4,871,914 Low-cost radon detector
A low-cost radon detector using a solid state diode having a depletion layer disposed close enough to a test medium that alpha particles deposit their energy in...
US-4,870,139 Polyamide/acrylic graft copolymers
A water-dispersible graft copolymer of a polyamide and at least one acrylic monomer is prepared by reacting the polyamide with the acrylic monomer(s) in an...
US-D303,662 Cursor control
US-D303,592 Rack for records or the like
US-4,867,416 Portable hydraulic lift for large lamps and the like
A portable hydraulic lift is provided for supporting lamps and the like at selected vertical positions. The disclosed lift includes five concentrically...
US-4,860,251 Vertical blanking status flag indicator system
An improved display system which includes a central processing unit (CPU) coupled to a display utilizing vertical blanking intervals. A frame buffer memory is...
US-4,859,798 Oxidation of alkanes
Alkanes are oxidized in the liquid phase at relatively low temperatures using heteropolyacids or polyoxoanions promoted with azide or certain metals. Such azide...
US-4,857,768 Triple rail logic gate
A multi-input logic gate is disclosed having particular application for use as an AND or OR gate in a digital circuit. The OR gate of the present invention...
US-4,856,455 Apparatus for holding electrical or electronic components during the application of solder
A carrier for dual-in-line packages to be wave soldered, comprises a frame with tracks into which the packages can be slid. The tracks are defined by aligned...
US-4,855,935 Method and apparatus for rendering vectors using bresenham parameters
An adaptive forward differencing apparatus wherein, when rendering curves, calculated x, y values are increased or decreased in order to create values which...
US-4,855,485 Process for production of cinnamates
In the process of preparing esters of cinnamic acid by reacting a styrene compound with carbon monoxide, oxygen, and an aliphatic alcohol in the presence of a...
US-4,854,969 Lithographic fountain solutions
Lithographic fountain solutions containing water, one or more nonionic surfactants having an HLB in the range of 1 to 8 and one or more hydrotropes to maintain...
US-D302,512 Sod plugger
US-4,848,144 Method of predicting the torque and drag in directional wells
A method is provided for generating an improved torque-drag model for at least the collar portion of the drill string in a directional oil or gas well. The...
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