The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 6049942 | Apparatus for rejuvenating a drainfield or drywell An apparatus is provided for cleaning and rejuvenating septic tank sewage systems. Where the septic tank has a drainfield associated therewith, the method comprises penetrating the ground near a drainfield lateral, and agitating the area near the drainfie... | 04/18/2000 |
| 5788409 | Drain field container system A drain field container system for use in filtering sewage water from a distribution box. A plurality of separate containers are used to receive equal amounts of sewage water from distribution pipes extending from a distribution box. Sewage water is dispe... | 08/04/1998 |
| 5753259 | Method of preparing controlled-release preparations for biologically active materials and resulting compositions A method and product for preparing a controlled-release composition are provided. The method comprises formation of a mixture containing at least one amphiphilic substance capable of forming a liquid crystalline phase, in contact with a liquid selected fr... | 05/19/1998 |
| 5473793 | Method and apparatus for rejuvenating a drainfield or dry well A method and apparatus is provided for cleaning and rejuvenating septic tank sewage systems. Where the septic tank has a drainfield associated therewith, the method comprises penetrating the ground near a drainfield lateral, and agitating the area near th... | 12/12/1995 |
| 5419614 | Crewseat with adjustable lumbar and thigh supports The present invention relates to crewseats for aircraft such as helicopters, and to thigh support and lumbar support mechanisms for such crewseats. The thigh support mechanism is a tilt plate hingeably attached to a base plate, and a locking tang extendin... | 05/30/1995 |
| 5383974 | Method for rejuvenating a drainfield or dry well A method and apparatus is provided for cleaning and rejuvenating septic tank sewage systems. Where the septic tank has a drainfield associated therewith, the method comprises penetrating the ground near a drainfield lateral, and agitating the area near th... | 01/24/1995 |
| 5369686 | Method and apparatus for secondary-option message delivery through enhanced service message handlers A system that facilitates the efficient transfer of digitally encoded messages comprising an enhanced service exchange device in combination with an enhanced service message handler. The system provides alternate delivery paths for digitally encoded messa... | 11/29/1994 |
| 5368391 | Method and apparatus for high resolution analysis The present invention relates to analytical methods for determining the composition of a material that undergoes a transition as a function of a driving variable. As applied to thermogravimetric analysis (TGA), a first preferred embodiment comprises (1) d... | 11/29/1994 |
| 5346306 | Method and apparatus for modulated differential analysis The present invention relates to differential analytical techniques for determining the composition, phase, structure, identification or other properties of a material that undergoes a transition as function of a driving variable. As applied to differenti... | 09/13/1994 |
| 5335993 | Method and apparatus for thermal conductivity measurements A method and apparatus for measuring the thermal conductivity of materials using modulated differential scanning calorimetry (MDSC). Two MDSC heat capacity measurements are made consecutively. One measurement is made under conditions which ensure obtainin... | 08/09/1994 |
| 5330799 | Press polymerization of lenticular images Methods and apparatus for producing autostereograms using ultraviolet radiation-curable thermosetting polymers. A stereoscopic image is printed upon a plastic or paper sheet, which is fed directly onto a surface having an inverse lenticular pattern relief... | 07/19/1994 |
| 5322322 | Side impact head strike protection system The present invention is a tubular structure which inflates upon side or oblique impact to protect the occupants of a vehicle such as an automobile. The structure is mounted in its undeployed state along the periphery of the vehicle's window. The primary ... | 06/21/1994 |
| 5321719 | Thermogravimetric apparatus The present invention is a thermogravimetric instrument having a ceramic sample support and a ceramic balance beam. The ceramic platform is rigidly attached to the hot end of the ceramic balance beam. An inert metal liner is press fitted into the ceramic ... | 06/14/1994 |
| 5318382 | Method and apparatus for hydraulic embedment of waste in subterranean formations There is disclosed a method and apparatus for waste disposal by hydraulic embedment in a subterranean formation. A method in accordance with the present invention comprises the steps of drilling into stable geologic formations thousands of feet below grou... | 06/07/1994 |
| 5302515 | Chemotactic test apparatus and method The present invention is a single site or multiple site chemotaxis test apparatus or chemotaxis chamber for measuring the effect of concentration gradients of diffusible chemicals upon the directional response of biological cells. The chemotactic test app... | 04/12/1994 |
| 5297031 | Method and apparatus for order management by market brokers There is provided a broker workstation for managing orders in a market for trading commodities, securities, securities options, futures contracts and futures options and other items including: a device for selectively displaying order information; a compu... | 03/22/1994 |
| 5288147 | Thermopile differential thermal analysis sensor A differential thermal analysis sensor consisting of two low-impedance differential thermopiles. Each thermopile consists of a series of thermocouples joined in series, with the measuring junctions of the thermocouples arranged around a uniform temperatur... | 02/22/1994 |
| 5284753 | Multiple-site chemotactic test apparatus and method A simple chemotaxis apparatus and method wherein surface tension, capillary action, and hydrophobic forces are used to hold cell suspensions, chemotactic factors, and control fluids in place on both membrane filters and chemotaxis plates. In one embodimen... | 02/08/1994 |
| 5282648 | Inflatable body and head restraint system The present invention relates to an inflatable air bag apparatus attached to a harness restraint system in a vehicle which inflates if an impact sensor detects an impact. The apparatus comprises an bladder attached to the harness's shoulder strap. The sid... | 02/01/1994 |
| 5259765 | Biofidelic manikin neck The present invention is a biofidelic manikin neck comprising a butyl rubber beam inserted between an aluminum base and an aluminum top, with a stainless steel cable assembly in the middle of the beam connecting the top to the base. In a first preferred e... | 11/09/1993 |
| 5253826 | Lightweight sealed parachute and harness assembly An environmentally-sealed parachute deployment system for bail-out parachutes comprising a spring-loaded pilot parachute, an environmentally sealed vacuum bag, a deployment bag having one or two elastic closure loops, and a man-rated parachute. The drag f... | 10/19/1993 |
| 5248199 | Method and apparatus for spatially resolved modulated differential analysis The present invention is a spatially-resolved differential analysis technique. A modulated differential analysis technique is applied using a proximal probe to obtain a spatially resolved characterization of a heterogeneous sample comprising at least two ... | 09/28/1993 |
| 5241461 | Computerized dynamic displacement display control systems A computerized dynamic displacement control display system which involves a method of systematically simulating and displaying the cyclical components of the behavior of the movement of a curve represented by a plurality of points relating two parameters ... | 08/31/1993 |
| 5231674 | Eye tracking method and apparatus In applications where it is desired to determine the locations of image features, such as eye monitoring to determine the direction that a person is gazing, determining the point at which he is gazing, or measuring the motions of his eye using a camera to... | 07/27/1993 |
| 5229832 | Optical ultrasonic material characterization apparatus and method A dual-interferometer apparatus for simultaneously measuring in-plane and out-of-plane ultrasonic displacements of the surface of materials comprising a single laser source, optical fibers, optical couplers and dividers, a phase-conjugate mirror, and a pa... | 07/20/1993 |
| 5224775 | Method and apparatus for modulated differential analysis The present invention relates to differential analytical techniques for determining the composition, phase, structure, identification or other properties of a material that undergoes a transition as function of a driving variable. As applied to differenti... | 07/06/1993 |
| 5210021 | Multiple-site chemotactic test apparatus and method A simple chemotactic apparatus and method wherein surface tension is used to hold cell suspensions, chemotactic factors, and control fluids in place on membrane filters. In some embodiments, chemotaxis factors and controls are placed on one side of a memb... | 05/11/1993 |
| 5165792 | Method and apparatus for high resolution analysis The present invention relates to analytical methods for determining the composition of a material that undergoes a transition as a function of a driving variable. As applied to thermogravimetric analysis (TGA), a first preferred embodiment comprises (1) d... | 11/24/1992 |
| 5158246 | Radial bleed total thrust control apparatus and method for a rocket propelled missile A radial bleed total thrust control system for a rocket propelled missile. In the preferred embodiment, the apparatus employs at least two pairs of straight radial nozzles which are disposed within and penetrate the skin of the missile and at least two pa... | 10/27/1992 |
| 5154310 | End nesting stackable container modified to maintain material firmly in place An end nesting stackable container is modified with means to firmly contain material being shipped or stored inside the container. The means contact the load being shipped at at least 4 points and are advantageously pivoted out of the way of the container... | 10/13/1992 |
| 5152692 | Biofidelic manikin neck The present invention is a biofidelic manikin neck comprising a butyl rubber beam inserted between an aluminum base and an aluminum top, with a stainless steel cable assembly in the middle of the beam connecting the top to the base. In a first preferred e... | 10/06/1992 |
| 5143123 | Cylindrical armor There is provided a cylindrical link and armor for electrical, electronic, or fiber-optic cables, hoses, conduits and the like. The armor comprises links which can either rigidly or flexibly interlock and can support their own weight.... | 09/01/1992 |
| 5133624 | Method and apparatus for hydraulic embedment of waste in subterranean formations There is disclosed a method and apparatus for waste disposal by hydraulic embedment in a subterranean formation. A method in accordance with the present invention comprises the steps of drilling into stable geologic formations thousands of feet below grou... | 07/28/1992 |
| 5124932 | Method for analyzing asymmetric clusters in spectral analysis The multiple linear regression approach typically used in near-infrared spectrometry yields equations in which any amount of reflectance at the analytical wavelengths leads to a corresponding composition value. As a result, when the sample contains a comp... | 06/23/1992 |
| 5121338 | Method for detecting subpopulations in spectral analysis A method for using spectral analysis to detect subpopulations is disclosed. According to this method, a training set of spectra of a first plurality of samples is obtained and a bootstrap distribution is formed. A test set of spectra of a second plurality... | 06/09/1992 |
| 5113213 | Computer-generated autostereography method and apparatus There is disclosed a method of making autostereographic images of an object, comprising the steps of inputting to a computer a predetermined number of planar images of the object, each of the planar images being a view of the object, from one of the prede... | 05/12/1992 |
| 5095278 | Planar interdigitated dielectric sensor A planar interdigitated dielectric sensor useful for measuring the surface properties of a material is disclosed. The sensor is formed on an insulating substrate. Attached to the surface of the substrate is an excitation electrode and a response electrode... | 03/10/1992 |
| 5090797 | Method and apparatus for mirror control It is sometimes required to track randomly moving objects with precision and high speed. This inventioin pertains to a mirro rotation assembly that provides precise, high-speed pitch and yaw tracking by rotating a low-moment-of-inertia mirror rather than ... | 02/25/1992 |
| 5076429 | Sharps container There is provided a sharps container comprising a receptacle and a lid engaging the receptacle, the lid including a rotatable tray and a baffle flap for sealing the receptacle when the tray is in an open position. The tray is biassed toward the open posit... | 12/31/1991 |
| 5065106 | Apparatus and method for analyzing dielectric properties using a single surface electrode and force monitoring and adjusting A parallel plate or single surface dielectric analyzer is disclosed including: a distance sensor for accurately measuring the varying distance between the electrodes, such as a linear voltage differential transformer (LVDT), and apparatus responsive to th... | 11/12/1991 |