Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 7282152 | Selenium removal method The present invention provides a method for removing selenium from an aqueous stream by passing the aqueous stream, in combination with a quaternary amine compound, through a filter and recovering a treated aqueous stream which is depleted in selenium content relati... | 10/16/2007 |
| 6875377 | Gamma radiation source A gamma radiation source comprising selenium-75 or a precursor therefore, wherein the selenium is provided in the form of one or more thermally stable compounds, alloys, or mixed metal phases. ... | 04/05/2005 |
| 6861037 | Method of removal of impurities from gold concentrate containing sulfides The present invention focuses on the method for the removal of impurities, such as tellurium and bismuth, from gold concentrate containing sulfides. According to the present method, the impurities are leached from the gold concentrate with the aid of an acidic aqueo... | 03/01/2005 |
| 6517792 | Combustion exhaust gas treatment system Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se is transformed into insolu... | 02/11/2003 |
| 6350419 | Combined supported liquid membrane/strip dispersion process for the removal and recovery of metals The present invention provides a novel process for the removal and recovery of metals from waste waters and process streams. The process of the present invention utilizes a combination of a supported liquid membrane (SLM) and a strip dispersion to improve... | 02/26/2002 |
| 6113863 | Combustion exhaust gas treatment system Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se is transformed into insolu... | 09/05/2000 |
| 5939042 | Tellurium extraction from copper electrorefining slimes The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes ... | 08/17/1999 |
| 5804424 | Process for the production of hydrogen using photosynthetic proteobacteria The invention relates to Proteobacteria that show unusually high level resistance to a wide range of metal oxides and oxyanions and to methods using selected Proteobacteria subgroups for efficient reduction of certain metal oxides and oxyanions to the fre... | 09/08/1998 |
| 5435830 | Method of producing fine powders First, an aqueous solution of water soluble compounds or an aqueous solution of water soluble complexes, which is a salt of elements belonging to the 6A, 7A, 1B, 2B, 3B, 4B, 5B, 6B, or 8 group in a periodic table are prepared. The pH of the aqueous soluti... | 07/25/1995 |
| 5405589 | Production of selenium-72 and arsenic-72 Methods and apparatus for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72. The invention provides app... | 04/11/1995 |
| 5352608 | Bioreduction of metal oxides and oxyanions by photosynthetic bacteria The invention relates to Proteobacteria that show unusually high level resistance to a wide range of metal oxides and oxyanions and to methods using selected subgroups for efficient reduction of certain metal oxides and oxyanions to the free metal. High l... | 10/04/1994 |
| 5294370 | Selenium or tellurium elemental hydrosols and their preparation The invention relates to a process for the preparation of a sol of a metallic or a non-metallic element, such as selenium, tellurium, gold and silver, wherein said process comprises the reduction of a chemical compound, which contains said element in a re... | 03/15/1994 |
| 5271909 | Method of tellurium separation from copper electrorefining slime A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100° a... | 12/21/1993 |
| 5204072 | Production of selenium-72 and arsenic-72 Methods for producing selenium-72, separating it from its daughter isotope arsenic-72, and generating multiple portions of a solution containing arsenic-72 from a reusable parent substance comprised of selenium-72.... | 04/20/1993 |
| 5160588 | Process for recovering tellurium from copper electrolysis slime An improved process for recovering tellurium from copper electrolysis slime. The process comprises leaching copper and tellurium from said slime with sulfuric acid and recovering tellurium from the solution after leaching (called "leach") by suspending at... | 11/03/1992 |
| 4915928 | Process for removing selenium from wastewater effluent Disclosed is a process for removing selenium from wastewater effluent. The processd includes the steps of; (i) contacting a selenide containing wastewater and a strong-base anion exchange resin to absorb selenide on the resin; (ii) eluting the ion exchange res... | 04/10/1990 |
| 4911905 | Method of forming stoichiometric II-VI compounds of high purity The disclosure relates to a method of purifying cadmium and tellurium and forming pure, stoichiometric cadmium telluride therefrom as well as the apparatus for making such cadmium telluride. The cadmium and tellurium are purified by heating each separatel... | 03/27/1990 |
| 4904559 | Processes for suppressing the fractionation of chalcogenide alloys A process for the preparation of chalcogenide alloy compositions which comprises providing a chalcogenide alloy; admixing therewith crystalline or amorphous selenium; and subsequently subjecting the resulting mixture to evaporation.... | 02/27/1990 |
| 4855203 | Imaging members with photogenerating compositions obtained by solution processes A layered photoresponsive imaging member comprised of a supporting substrate; an amorphous photoconductive layer and a hole transport layer dispersed in a resinous binder, which layer is formulated from a solution mixture; and wherein the photoconductive ... | 08/08/1989 |
| 4801442 | Method for purifying starting materials for fabricating chalchogenide glass A method for purifying starting materials for chalcogenide glass is disclosed, which comprises contacting chalcogen starting materials at a high temperature with a metal which is more susceptible to oxidation than the chalcogen starting materials to allow... | 01/31/1989 |
| 4780386 | Selenium alloy treatment A process for preparing an electrophotographic imaging member comprising providing large particles of an alloy comprising selenium, tellurium and arsenic, the large particles having an average particle size of at least about 300 micrometers and an average... | 10/25/1988 |
| 4770700 | Hydrometallurgical process for the separation and enrichment of gold, platinum, and palladium, together with recovery of selenium from the anode sludge of copper electrolysis A hydrometallurgical process for enrichment of gold, platinum and palladium from copper electrolysis anode sludge, and simultaneously recovery of selenium, in which the sludge is treated with Cl2 /HCl to transform the selenium of a hexavelent s... | 09/13/1988 |
| 4695447 | Destruction of inorganic hazardous wastes Hazardous waste containing inorganic compounds which contain heavy metals or particular hazardous anionic groups or which are hazardous halides or non-metal oxides or sulfides is contacted with molten aluminum to provide reduction to lower less hazardous ... | 09/22/1987 |
| 4690725 | Purification of Cd and Te by zone refining Cd and Te are purified by multiple-pass zone refining in the presence of a small amount of an added gettering substance chosen from Cd, Te and CdTe. In the purification of Cd, Te, or CdTe is added, the amount of Te or of Te in CdTe being less than the amo... | 09/01/1987 |
| 4663141 | Process for recovering or purifying selenium A process for recovering or purifying selenium is disclosed. A selenium-containing material is reacted with carbon monoxide and ammonia or a primary or secondary amine to form a compound soluble in an aprotic solvent. The reaction product is subjected to ... | 05/05/1987 |
| 4624701 | Coreduction process for incorporation of halogens into chalcogens and chalcogenide alloys A process for the preparation of halogenated chalcogens, or halogenated chalcogenide alloys which comprises providing in solution pure esters of the desired chalcogen, and subsequently subjecting a mixture of the esters and a chalcogenide halide to a core... | 11/25/1986 |
| 4615731 | Hydrometallurgical processing of precious metal-containing materials A hydrometallurgical process is provided for separating heavy metal nuisance elements such as As, Sb, Bi, Sn and Pb from precious metals and/or selenium. The process can be used as a step in an overall hydrometallurgical process for treating refinery resi... | 10/07/1986 |
| 4576634 | Process for the preparation of chalcogenide alloys Disclosed is a process for the preparation of high purity chalcogenide alloys which comprises providing an acid mixture of the chalcogens; forming a solution thereof; and thereafter reacting the solution with a reducing agent.... | 03/18/1986 |
| 4557922 | Process for preparation of chalcogens and chalcogenide alloys of controlled average crystallite size Chalcogens and chalcogenide alloys of controlled crystal size are prepared by subjecting the esters to a reduction reaction. The esters may be prepared by treating the corresponding oxides of the desired elements with an alcohol or glycol and then in one ... | 12/10/1985 |
| 4548800 | Process for selenium purification This invention is generally directed to an improved process for the preparation of selenium of high purity which comprises reacting selenious acid, selenium oxides, or mixtures thereof, with an alcohol, and subjecting the resulting selenium ester, subsequ... | 10/22/1985 |
| 4530718 | Process for reclamation of high purity selenium from scrap alloys This invention relates to a process for the reclamation of selenium in high purity from scrap alloys which comprises converting the alloy to a mixture of oxides, separating the selenium oxide formed by alcoholic dissolution, followed by treating this solu... | 07/23/1985 |
| 4520010 | Process for modifying the electrical properties of selenium, and selenium alloys Disclosed is a process for improving the electron transporting properties of selenium, or selenium alloys, by (1) providing a source of selenium, or selenium alloy, (2) treating the selenium, or selenium alloy with hydrazine contained in an organic solven... | 05/28/1985 |
| 4497659 | Production of metals with low selenium contents Selenium is precipitated from solutions containing at least one metal selected from the group consisting of nickel, cobalt, copper, iron, zinc, manganese, magnesium, chromium and cadmium by adding chromous sulfate to the solution to precipitate selenium t... | 02/05/1985 |
| 4484945 | Process for preparation of chalcogenide alloys by solution coreduction of a mixture of oxides Disclosed is a process for the preparation of chalcogenide alloys in high purity which comprises providing a solution mixture of oxides of the desired chalcogens, and subsequently subjecting this mixture to a simultaneous coreduction reaction.... | 11/27/1984 |
| 4473396 | Procedure for roasting seleniferous material The invention concerns a procedure for separating selenium from seleniferous raw material by roasting this material with oxygen at elevated temperature in enclosed space. With a view to improving the separation of selenium, the roasting is carried out in ... | 09/25/1984 |
| 4460408 | Process for preparation of chalcogenide alloys by coreduction of esters This invention is generally directed to a process for the preparation of chalcogenide alloys of the elements of Groups VA to VIA of the Periodic Table, in high purity, (99.999 percent) which comprises providing pure esters of the alloys desired, and subse... | 07/17/1984 |
| 4411698 | Process for reclaimation of high purity selenium, tellurtum, and arsenic from scrap alloys This invention is generally directed to an improved process for reclaiming metallic elements in high purity from a source material containing these elements, which comprises providing a source material, converting the source material to mixture of oxides,... | 10/25/1983 |
| 4405464 | Process for the removal of selenium from aqueous systems A process for reducing the concentration of selenium ions in the Se(VI) oxidation state in an aqueous solution. The aqueous solution is admixed with a quantity of metallic iron. The iron reduces the selenium ions from the Se(VI) oxidation state to a lower... | 09/20/1983 |
| 4389389 | Process for preparation of high purity tellurium This invention is generally directed to an improved process for the preparation of tellurium in high purity which comprises reacting tellurium dioxides, with a diol, and subjecting the resulting tellurium ester, subsequent to purification, to a reduction ... | 06/21/1983 |
| 4378228 | Process for preparation of monodispersed crystalline particles from amorphous polymers Process for preparation of monodispersed crystalline particles from amorphous crystallizable polymers. In this process, an amorphous polymer of an inorganic glass, such as selenium, or of organic polymer, such as a polyester, is initially contacted with a... | 03/29/1983 |
