William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 5897005 | Merchandising display rack A merchandising display rack is provided for displaying products in which the display rack is constructed of a freestanding framework. One or more of its sides includes a several of adjacently disposed partitioned bays or product display modules. Addition... | 04/27/1999 |
| 5861132 | Vapor phase flame process for making ceramic particles using a corona discharge electric field A gas phase process for the production of titanium dioxide powders having well-controlled crystalline and surface area characteristics is disclosed. In this process, which is preferably carried out in a laminar diffusion flame reactor, vapor phase TiCl | 01/19/1999 |
| 5836588 | Interactive wall art Interactive wall art is a game to be played indoors by one or more children. The game consists of a self-adhesive mural portraying characters playing an action sport, a loop-threaded stuffed ball corresponding to the sport portrayed in the mural, and a ho... | 11/17/1998 |
| 5833440 | Linear motor arrangement for a reciprocating pump system A magnetically-powered linear displacement device is disclosed which can be used as the highly efficient pollution-free prime mover. The linear displacement device utilizes a permanent magnet whose flux density can be readily shifted from one of two paral... | 11/10/1998 |
| 5832865 | Mechanical vehicle positioning device A mechanical vehicle positioning device provides a visible guide to the operator of a vehicle while that vehicle is being positioned. An indicator suspended at a desired vehicle locating position while a vehicle is being positioned can be retracted when n... | 11/10/1998 |
| 5823319 | Control system for the drop-out zone of a constant speed accumulating conveyor A control system for a conveyor system of the type having a first constant speed conveyor with a drop-out zone and a second variable speed downstream conveyor receiving products from the drop-out zone. The drop-out zone comprises a plurality of conveyor r... | 10/20/1998 |
| 5794939 | Thin faced balanced seal A mechanical seal 30 is disclosed comprising a sleeve 32 which is adapted to be affixed to the shaft 34 of a item of mechanical equipment, together with a rotary component 42 which carries a rotary seal face 44. Two O-ring grooves 46, 48 are provided on t... | 08/18/1998 |
| 5783501 | Paper machine felts The invention relates to postcondensed paper machine felts comprising a polyamide base fabric and a polyamide coating needled thereon, the paper machine felts having a relative solution viscosity in sulfuric acid in accordance with the DIN 53,727 standard... | 07/21/1998 |
| 5775021 | Collapsible cleaning rod for firearms An improved collapsible sectional rod for cleaning firearms is provided. The cleaning rod includes a plurality of hollow tubular elongated sections which are preferably metallic and of substantially equal lengths. Each section includes a tapered end and a... | 07/07/1998 |
| 5771985 | Earth penetrating apparatus for obtaining sediment samples, driving instrument probes, pilings, or sheet pilings A motor driven eccentric vibrator with a spring isolated biasing mass for applying force to an earth penetrating device to cause the device to penetrate into the earth. The vibrator is rigidly attached to a housing which is rigidly attached to the earth p... | 06/30/1998 |
| 5767441 | Paired electrical cable having improved transmission properties and method for making same A pre-twisted cable pair and a method for processing such pairs into an electrical cable having improved electrical and mechanical properties is disclosed. At least one insulated wire for transmitting electrical signals is pre-twisted prior to pairing wit... | 06/16/1998 |
| 5761350 | Method and apparatus for providing a seamless electrical/optical multi-layer micro-opto-electro-mechanical system assembly Optoelectronic interconnections can provide a practical solution for the ever increasing communication bottleneck problems when combining a multitude of information processing units to perform a function. As research activities progress in the field of se... | 06/02/1998 |
| 5756041 | Method and apparatus for processing blown tube films Methods and apparatus for the processing of a continuous blown film undergoing collapsing in which a plurality of differential elements of the film follow respective streamline paths which are approximately equal in length to the path of the longest strea... | 05/26/1998 |
| 5747687 | In-ground receptacle for fluid meter and valves An in-ground receptacle for a fluid meter and/or a valve, comprising a continuous wall defining a chamber for the meter and/or valve. The wall is molded in three layers comprising smooth inner and outer layers of plastic with an intermediate plastic layer... | 05/05/1998 |
| 5740665 | Riding saddles A riding saddle comprises, inter alia, two downwardly depending flaps from either side of the seat, which flaps may be altered to provide different configurations so that the saddle may be readily adapted for different riding pursuits. Such adaptability i... | 04/21/1998 |
| 5737796 | Roll type strip wiping system A wiping system for removing liquids such as lubricant and coolant liquids from the surfaces of a metallic strip. The system comprises upper and lower wiper rolls for wiping the upper and lower surfaces of the strip. The wiper rolls each comprise a metal ... | 04/14/1998 |
| 5719126 | Melanogenic inhibitor, and methods of producing and using the same A purified, naturally derived melanogenic inhibitor protein capable of inhibiting melanogenesis in pigmentary cells has an amino acid sequence SEQ ID NO: 4. A method of producing melanogenic inhibitor protein comprises grafting mammalian skin onto a live ... | 02/17/1998 |
| 5718273 | Blinds with improved decorative louvers Louvered blinds for use at windows and the like, having vertically or horizontally oriented louvers bearing decorative indicia, and which, when closed, are free of light gaps and free of overlap of the decorative indicia from louver-to-louver. Each louver... | 02/17/1998 |
| 5718705 | Internal fixation plate A multi-purpose internal fixation plate for stabilization of fractured or broken bones. The fixation plate comprises a central hub portion with a plurality of radial, integral fingers extending therefrom and evenly spaced thereabout. The fixation plate is... | 02/17/1998 |
| 5712466 | Perfect steak device A cooking device comprising a hot plate with a top surface; a heatable bottom cooking surface bearing a plurality of outwardly-projecting, spring-loaded, food piercing temperature probes of different lengths, configured for injecting into a piece of food ... | 01/27/1998 |
| 5711211 | Chlorine generator for preservation of fruits and vegetables A chlorine generator for preserving fruits and vegetables includes a first layer of paper or polyethylene and a second layer of polyethylene. The first layer has a weight of from about 20 to about 70 g/m2 and is preferably made from a laja-type... | 01/27/1998 |
| 5697421 | Infrared pressureless infiltration of composites The present invention provides a method for infrared pressureless infiltration of composites, including infiltration of carbon fibers and silicon carbide fibers with aluminum and titanium matrices. Composites produced by the methods of the present inventi... | 12/16/1997 |
| 5698177 | Process for producing ceramic powders, especially titanium dioxide useful as a photocatalyst A gas phase process for the production of titanium dioxide powders having well-controlled crystalline and surface area characteristics is disclosed. In this process, which is preferably carried out in a laminar diffusion flame reactor, vapor phase TiCl | 12/16/1997 |
| 5694199 | Method and apparatus for performing automated vision performance tests An improved visual performance tester is provided which measures and stores very precise information concerning the visual sensitivity of a human eye, by use of a series of contrasting images on a computer monitor screen under a controlled-lighting enviro... | 12/02/1997 |
| 5690109 | Method of destructive, noninvasive hyperpyrexia of tissues and organisms utilizing nuclear magnetic resonance A method of selectively heating targeted cells within a specimen while avoiding heating of non-targeted cells is provided. The method comprises the steps of: (a) determining at least one combination of magnetic field strength and radio wave frequency (str... | 11/25/1997 |
| 5687936 | Gutter bracket A single piece gutter bracket having a gutter support arm is connected to a centrally disposed web with two spaced apart flanges extending substantially perpendicularly from opposing edges of the central web, in the direction opposite the gutter support a... | 11/18/1997 |
| 5681617 | Large scale metal coating of continuous ceramic fibers The present invention provides a method for application of metal coatings, specifically copper and silver, to continuous ceramic fibers, by electroless deposition. The method comprises the steps of: winding the uncoated ceramic fibers over a frame so that... | 10/28/1997 |
| 5671615 | Fixation panty brief A fixation panty brief (7, 29) comprises a tubular body portion (10) and a crotch portion (11). The panty brief comprises a waistband portion (16) for encircling the body of the user and at the same time a snug fit to the user known from ordinary circular... | 09/30/1997 |
| 5660580 | Nozzle for cryogenic particle blast system A convergent-divergent Single/Multiple Expansion wave contour wall and wave Reflection solid wall Nozzle (S/MERN) for use with particle blast systems is provided which includes a single contoured converging-diverging wall opposing a generally flat, solid ... | 08/26/1997 |
| 5660240 | Water and dust collector for wet core drilling A water and dust collector for the bit of a wet core drilling operation. The device comprises a dome-shaped element with a hole in its top to receive the core bit with relatively close clearance, and an annular planar bottom edge adapted to rest upon the ... | 08/26/1997 |
| 5658607 | Process for shipping and ripening fruits and vegetables A method for uniformly controlling the ripening of bananas and other perishable products from harvest to delivery, wherein a combination shipping and ripening container having an internal volume capable of receiving and maintaining a controlled atmosphere... | 08/19/1997 |
| 5653273 | Universal precision woodworking center A woodworking center comprising a horizontal frame supporting a work table assembly at a level comfortable for the operator. For most woodworking operations the workpiece is supported by the work table assembly. The work table assembly can be moved horizo... | 08/05/1997 |
| 5647051 | Cold therapy system with intermittent fluid pumping for temperature control A cold therapy system for applying a cooling pad to an area of the body of the user. The system comprises a portable insulated cooler having a lid and serving as a reservoir for water and ice. A pump is located within a housing affixed to the exterior of ... | 07/08/1997 |
| 5644915 | Control system for a hydraulic press brake A control system for controlling the movement of the ram of a press or press brake of the type having one or two main cylinders with pistons operatively attach to the ram. The control system comprises a programmable processor with inputs from a pressure t... | 07/08/1997 |
| 5640809 | Rain gutter shield A rain gutter shield for preventing leaves, other debris and animals from entering a rain gutter of the type attached to a structure adjacent to and directly beneath an edge of a roof of the structure. The rain gutter shield comprises a sheet of material ... | 06/24/1997 |
| 5639226 | Portable, battery operated air pump A portable, battery operated air pump comprising a battery power supply, an electric motor having a drive shaft, a drive wheel affixed to the motor shaft, a driven wheel mounted on a pivot pin and driven by the drive wheel, a cylinder-piston air pump havi... | 06/17/1997 |
| 5628718 | Method of operating a folder A method of operating a folder comprising a plurality of sequentially arranged folding units. At least one folding unit is provided with a sheet detector arranged upstream of a sheet abutment and at least one lateral guide. Apart from automatic and single... | 05/13/1997 |
| 5619771 | Oscillating and reverse cleaning sootblower A sootblower is provided for cleaning boiler tubes with steam, in which individual time-delays allow the lance tube to move in an axial direction only for certain time intervals at the beginning of the extension and retraction strokes before the lance tub... | 04/15/1997 |
| 5617711 | Method of producing a container of bananas and method of transferring bananas A method of producing a container of banana clusters is provided wherein a flexible inner container is inserted into an outer container prior to placing the banana clusters into the outer container, placing a first row of banana clusters in the inner cont... | 04/08/1997 |
| 5618228 | Holding fixture for a wheel and tire assembly A holding fixture for a wheel and tire assembly enabling a single person to perform an operation on the tire such as grooving or the like. The fixture comprises a first U-shaped bracket having a base for mounting on a wall or other vertical surface and le... | 04/08/1997 |