Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4800319 | Low-pressure mercury vapor discharge lamp A low-pressure mercury vapor discharge lamp having a very satisfactory color rendition, (R(a,8)ࣙ85), a color temperature of 2300-3300 K and a color point on or near the Planckian curve. The lamp is provided with a luminescent layer comprising: a. a lumi... | 01/24/1989 |
| 4775464 | Process for separating materials of different specific gravities through a closed loop system utilizing a liquid medium of different densities This invention relates to a process for the dynamic separation of mixtures of materials, such as minerals having different specific gravities, by using one dense medium having two different densities, the process includes a closed loop flow system utilizi... | 10/04/1988 |
| 4759826 | Process for purifying thionyl chloride An improved process for purifying thionyl chloride by the double distillation of an impure mixture of thionyl chloride, sulfuryl chloride, sulfur monochloride, sulfur dichloride and sulfur dioxide is disclosed. The double distillation process is conducted... | 07/26/1988 |
| 4758311 | Method for avoiding the corrosion of the strippers in the urea manufacturing plants A method for passivating the surface of the strippers of the urea plants, where the temperatures are very high, where the pressures range from 120 to 240 Kg/cm2 and where the effluent process flow from the synthesis reactor undergoes one or mor... | 07/19/1988 |
| 4758309 | Device for mounting fabrics in papermaking machines A device for mounting felts in papermaking machines, which device consists of a supplementary strip mounted along the lengthwise edge or edges of the felt. Spaced apart apertures are formed in the strip along the length of the felt. The apertures are shap... | 07/19/1988 |
| 4756797 | Multiple effect evaporator with an evaporative condenser as a liquid evaporation effect A multiple effect evaporator system and a process for concentrating a process liquid wherein evaporated process liquid from one effect serves as heating fluid in an adjacent effect. Low energy heating fluid in vapor form is fed to an evaporative surface c... | 07/12/1988 |
| 4755260 | Method for producing felt for paper making A papermaker's felt having an elongated base fabric, at least one batt layer, and means to interconnect the opposite longitudinal ends of the base fabric to make an endless felt. The endless felt is made by providing seaming loops on opposite longitudinal... | 07/05/1988 |
| 4755258 | Method and apparatus for deactivating spent liquor Calcium containing sulphate spent liquor is deactivated by means of heating. Spent liquor is heated by means of direct condensing in a flash-steam-system. Liquor vapors generated during expansion of the already deactivated spent liquor are used for heatin... | 07/05/1988 |
| 4752315 | Suction head for slag removal A nozzle or nozzles for spraying cooling water are disposed at the lower end of a slag suction path. A cooling water down-flow passage is provided on the outer periphery of an inner tube which constitutes a slag suction path. A water sump is provided belo... | 06/21/1988 |
| 4750971 | Method of manufacturing a semiconductor device An improved method of manufacturing a semiconductor device having a narrow groove or slot is provided. There are formed on a substrate a heavily n-doped first silicon layer, and oxidation-preventing layer such as silicon nitride, and a weakly doped or und... | 06/14/1988 |
| 4750975 | Vapor/liquid contact column structure Vapor and liquid contact structure for distillation, fractionation, rectification, absorption, and the refining, in a column, of various liquid materials such as petroleum, chemical, and alcohol solutions. Provision is made for the inclusion of vertically... | 06/14/1988 |
| 4751427 | Thin-film electroluminescent device A highly efficient, AC-excited, blue light-emitting phosphor for solid-state thin-film electro-luminescent (TFEL) devices is comprised of strontium sulphide (SrS) host material doped with cerium fluoride (CeF3) acting as an emitter providing a ... | 06/14/1988 |
| 4749395 | Process for producing a glass body Preforms for drawing into glass fibers are relatively quickly produced by extruding filaments or tapes from polysiloxanes and/or heteropolysiloxanes and curing such filaments. A cylindrical wound body is produced from such cured filaments by winding such ... | 06/07/1988 |
| 4749441 | Semiconductor mushroom structure fabrication A method of fabricating single crystal silicon in a "mushroom" shape for use in fabricating devices such as a Silicon-On-Insulator-Like MOSFET. One embodiment of the inventive method entails fabricating a hole-within-a-hole structure in a thick silicon di... | 06/07/1988 |
| 4749445 | Method of finishing paper utilizing substrata thermal molding Disclosed in a process for producing gloss and smoothness on the surface of a paper web, comprising: A. advancing a web of papermaking fibers through a nip formed by a smooth metal finishing drum and a resilient backing roll; and B. heating the drum to a tempe... | 06/07/1988 |
| 4749439 | Method for manufacturing thin film magnetic head A thin film magnetic head including a first magnetic material layer, a gap material layer formed on the first magnetic material layer, an inorganic insulating layer having a generally trapezoidal shape in cross section and formed on the gap material layer... | 06/07/1988 |
| 4749473 | Process for removing ink from wastepaper Wastepaper is treated by a ink-removing process in which an aqueous wastepaper pulp slurry is introduced into a treating vessel, air is blown into the wastepaper pulp slurry preferably through a number of air-blowing orifices formed on a peripheral surfac... | 06/07/1988 |
| 4749396 | Method of forming an optical fiber preform An improved method of forming an optical fiber preform includes separately forming a rod-like inner member and a hollow tube-like outer member by a soot glass deposition technique. The inner member is inserted into the outer member, while they are both in... | 06/07/1988 |
| 4747861 | Method for the manufacture of glass by means of deposition from the vapor phase A method for depositing glass by decomposition of glass forming compounds in the vapor phase wherein a gaseous mixture of glass forming compounds is introduced into a refractory tube, and a source of heat is applied to the tube while the tube is being rot... | 05/31/1988 |
| 4747915 | Falling-film process for the cocurrent evaporation of a solution A falling-film process and apparatus for the cocurrent evaporation of a solution is disclosed. The process utilizes a tube-bundle heat exchanger in which the upper ends of the individual tubes of the tube-bundle are closed. Apertures, preferably in the fo... | 05/31/1988 |
| 4746422 | Method for the separation of a mixture of plastic and contaminant The present invention relates to a method for the separation of a mixture of plastic particles and contaminant. According to the invention, a two-phase solution composed of a halogenated hydrocarbon and water are applied to the mixture of plastic and cont... | 05/24/1988 |
| 4746546 | Method of forming endless wire belt for paper machines or the like In order to avoid marking by the supporting surfaces in an endless belt for paper machines or the like with a number of helices consisting of opposing winding legs and headcurves joining these flanks together and into whose intermediary spaces the headcur... | 05/24/1988 |
| 4744890 | Flotation apparatus and method Flotation apparatus and methods for separating particles from particulate suspensions such as coal and mineral ore slurries, wherein fluid discharge is removed annularly from a flotation vessel. Preferably, the flotation apparatus includes a vertically or... | 05/17/1988 |
| 4744869 | Process for purifying methanol A process for purifying methanol which comprises introducing crude synthetic methanol obtained by catalytic reaction of carbon oxide and hydrogen into a rectifying column either as such or after it is first introduced into a topping column and distilled w... | 05/17/1988 |
| 4743559 | Method for the determination of redox reactions using iodate to eliminate ascorbic acid interference The present invention provides a process for the detection of redox reactions by introducing a redox reagent system into a test system, wherein a soluble iodate is additionally added to the test system in an amount which is in excess of the highest amount... | 05/10/1988 |
| 4743344 | Treatment of wastes from high purity silicon process Method for treating waste slurries containing solid impurities, e.g. in the form of metal chlorides, and silicon tetrachloride and trichlorosilane by evaporation and separation techniques to recover more of the silicon tetrachloride and trichlorosilane.... | 05/10/1988 |
| 4743557 | Composition having regulated occurence of opacity and clarity at selected temperatures and method of making the same and also use of the composition A composition having regulated occurrence of opacity and clarity at selected temperatures; method of making and using such a composition to create a temperature-indicating device by filling the composition in a suitable container of transparent material a... | 05/10/1988 |
| 4741803 | Spray dryer and operating method therefor A spray dryer consisting of a tower-like drying container with spraying elements for introducing therein the material to be dried, pipelines and heater for injecting a heated drying gas, and a separator for separating dry fine material and gas. The dry fi... | 05/03/1988 |
| 4741748 | Heating oven for preparing optical waveguide fibers A heating oven for processing glass materials from which optical waveguide fibers are prepared is provided which comprises: (a) an elongated chamber for receiving the glass material to be processed; and (b) means for heating the chamber, said means comprising ... | 05/03/1988 |
| 4741805 | Guiding apparatus for guiding an extended nip press blanket A guiding apparatus is disclosed for guiding an extended nip press blanket relative to a pressing shoe. The apparatus includes a nose member which is pivotally-connected to the shoe for guiding the blanket relative to the shoe. An actuator is secured to t... | 05/03/1988 |
| 4738752 | Heated extended nip press apparatus A press apparatus is disclosed for removing fluid from a fibrous web. The apparatus includes a press member and a blanket cooperating with the press member for defining therebetween an elongate pressing section such that the web is pressed between the pre... | 04/19/1988 |
| 4738703 | Method of molding optical lenses Optical lenses high in configurational accuracy with smooth surfaces are press molded in a carefully finished, polished and properly dimensioned mold preferably in a non-oxidizing atmosphere. The molding operation includes placing a quantity of glass havi... | 04/19/1988 |
| 4738754 | Method of recovering ammonia from an aqueous effluent which contains NH.sub . 2 and H2 S An aqueous effluent is supplied to a stripping column (total stripping column) from which a mixture that is rich in NH3, CO2 and H2 S is withdrawn as a head product. In at least one additional stripping column the mixture ... | 04/19/1988 |
| 4737238 | Method of processing waste paper with white water and aluminum recycle to papermill Processes for treating waste paper containing aluminum and having a high lignin content are disclosed, including producing an aqueous pulp suspension of the waste paper, screening the pulp suspension, dewatering the pulp so as to produce a first white wat... | 04/12/1988 |
| 4737241 | Method of making a papermaker's felt A method of making a papermaker's felt which includes the steps of forming a pin seam fabric having interdigitated loops at the ends of the fabric joined by a pin. A batt of fibrous material is needled into at least one face of the fabric and across the p... | 04/12/1988 |
| 4737273 | Flotation process for recovery of phosphate values from ore A process for recovering phosphate values from silica-containing phosphate ores is provided. The ore has a particle size in the range of about 0.6 to 1.2 mm and is subjected to selective flotation in the presence of a cationic flotation reagent comprising... | 04/12/1988 |
| 4737272 | Froth flotation method and apparatus A method for improving separation of the flotable phase from the non-flotable phase of a slurry of particulate material in a froth flotation machine comprising a tank, an upper outlet port for discharge of the flotable phase, and a mechanism for deliverin... | 04/12/1988 |
| 4735709 | Method and apparatus for concentration of minerals by froth flotation using dual aeration A froth flotation system for separating a mineral fraction from an aqueous pulp containing a mixture of mineral and gangue particles. The aqueous pulp is supplied to a pulp-filled vessel (or column) wherein a froth is formed on the surface of the pulp and... | 04/05/1988 |
| 4735679 | Method of improving silicon-on-insulator uniformity A method of improving silicon-on-insulator uniformity using polishing. A polishing stop layer of substantially uniform thickness is provided having a first side which is made coplanar with a first side of a thicker layer of semiconductor material. A polis... | 04/05/1988 |
| 4735710 | Beryllium flotation process A process and reagents are described for separating beryllium silicate concentrates by flotation from oxidic minerals. The process is especially suitable for the separation of phenacite and bertrandite present in ores with complex gangue compositions. The... | 04/05/1988 |
