Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7981168 | Compact heat exchanger made of ceramics having corrosion resistance at high temperature Ceramic materials that are highly resistant to strong acids such as concentrated sulfuric acid and halides such as hydrogen iodide are employed to make block elements through which a large number of circular ingress channels extend in perpendicular directions and wh... | 07/19/2011 |
| 7846216 | Method for making colloidal nanocrystals A method for making colloidal nanocrystals includes the following steps: dissolving a nanocrystal powder in an organic solvent, and achieving a solution A of a concentration of 1-30 mg/ml; dissolving a surfactant in water, and achieving a solution B of a concentrati... | 12/07/2010 |
| 7357835 | Production of crystalline materials by using high intensity ultrasound A crystalline material sufficiently pure for use in pharmaceuticals may be made by forming a saturated solution of the material, changing the temperature of the solution so it becomes supersaturated, and subjecting the solution to irradiation by high intensity ultra... | 04/15/2008 |
| 7282236 | Hydrophobic silica Methods of making hydrophobic, pyrogenically produced silica having a tamped density, of 55 to 200 g/l. Said silica is produced by hydrophobizing pyrogenically produced silica by reaction with a halogen free silane and then compacting it with means consisting of a r... | 10/16/2007 |
| 7264231 | Diffused gas aeration apparatus An aeration apparatus including a cylindrical passage tube, a static mixer positioned in the passage tube adjacent an upper end of the tube and including a plurality of perforated blades and an opening between the blades along a central axis of the tube, a pneumatic... | 09/04/2007 |
| 7235183 | Glycerine foots salt separation system The present invention provides a method and apparatus for the recovery of salt from a glycerine process, allowing the salt to be used in a brine solution. A salt settling tank is positioned inline between the foots from a crude still bottom and a foot still. Salt se... | 06/26/2007 |
| 7156174 | Contained micro-particles for use in well bore operations The present invention relates to well bore operations, and more particularly, to contained micro-particles, and methods for using such contained micro-particles in cementing operations. An exemplary method of facilitating the use of micro-particles in a well bore fl... | 01/02/2007 |
| 7128840 | Ultrasound enhanced process for extracting metal species in supercritical fluids Improved methods for the extraction or dissolution of metals, metalloids or their oxides, especially lanthanides, actinides, uranium or their oxides, into supercritical solvents containing an extractant are disclosed. The disclosed embodiments specifically include e... | 10/31/2006 |
| 7097671 | Method of cleaning industrial gases A methanol/water scrubbing solution containing colloidal metal sulfides formed from metal carbonyls and resulting from the scrubbing of industrial gases, such as synthesis gas, is subjected to agglomeration of the metal sulfides before the scrubbing solution to be s... | 08/29/2006 |
| 6960256 | Formation of small crystals Small crystals are made by mixing a solution of a desired substance with an anti-solvent in a fluidic vortex mixer in which the residence time is less than 1 s, for example 10 ms. The liquid within the fluidic vortex mixer (12) is subjected to high intensity ... | 11/01/2005 |
| 6821339 | Process for the crystallization of non-sucrose substances The invention relates to a process for the crystallization of substances having a narrow metastable supersaturation zone. In the process the saturation of a solution is gradually increased and the solution is seeded for the crystallization. The seeding is performed ... | 11/23/2004 |
| 6818142 | Potassium hydrogen peroxymonosulfate solutions A solution comprising potassium hydrogen peroxymonosulfate containing an elevated level of KHSO5 and having a weight ratio of SO5 to SO4 of greater than 1.0:1, and its use in microetching metal substrates is disclosed. ... | 11/16/2004 |
| 6652822 | Spherical boron nitride particles and method for preparing them Spherical and polyhedral particles of boron nitride and method of preparing them. Spherical and polyhedral particles of boron nitride are produced from precursor particles of hexagonal phase boron nitride suspended in an aerosol gas. The aerosol is direct... | 11/25/2003 |
| 6610267 | Method for manufacturing a calcium nitrate melt and product thereof The invention relates to a method for manufacturing a homogeneous and ammonium free calcium nitrate melt with high solidification temperature, suitable for conventional particulation methods, by mixing a potassium source with a calcium nitrate source and ... | 08/26/2003 |
| 6541426 | Method to produce pesticide suspension concentrates The present invention relates to a method to produce suspension concentrates of pesticides, pharmaceuticals, biocides, and similar materials, using a melt emulsification process. The method is particularly applicable to pesticides which have a low water s... | 04/01/2003 |
| 6364920 | CMP formulations CMP formulations comprising alumina particles and an iodate oxidizer can be stabilized against pH drift during use by acidification using an organic acid. Formulation pH stability can be further enhanced by treating the formulation at an elevated temperat... | 04/02/2002 |
| 6333019 | Method for operating a chemical and/or physical process by means of a hierarchical fluid injection system The invention relates to injection of fluids (gas, liquid, suspension or other mixtures) in a controlled typically uniform way within a vessel containing another fluid or fluidized medium. Said injection device consists of pipes or channels that are conne... | 12/25/2001 |
| 6217622 | Method and apparatus for precipitating and classifying solids in high concentrations A method of forming and classifying a precipitate containing large, coarse and fine particles from a super-saturated precipitating mother slurry, e.g. sodium aluminate from the Bayer process. The method comprises separating the precipitating mother slurry... | 04/17/2001 |
| 6162263 | Method for producing and shipping metal cyanide salts Metal cyanide suitable for shipment is prepared by introducing an aqueous metal cyanide feed stream to a crystallizer to form a slurry of metal cyanide crystals in their mother liquor. The crystallization step occurs at a temperature between 30° C. and 7... | 12/19/2000 |
| 6159252 | Process and device for producing granulates by fluidized bed spray granulation This invention relates to a process for the production of granulates by fluidized bed spray granulation and to a device for this purpose. Liquid starting materials may be converted into granulates by fluidized bed spray granulation. In order to ensure ele... | 12/12/2000 |
| 6110438 | Method of making black phosphorus from red phosphorus The specification describes a method for producing black phosphorus from red phosphorus by thermally cycling red phosphorus in a vacuum between 360-400° C. and 200-240° C., whereupon the red phosphorous undergoes an allotropic phase change to black phos... | 08/29/2000 |
| 6056791 | Process for the production of particles or powders In a novel process for the production of particles or powders, a substance or mixture of substances to be treated is provided in a pressure vessel. A highly compressible fluid is dissolved under pressure in the substance or mixture of substances provided ... | 05/02/2000 |
| 5969044 | Method of packaging air- and/or moisture-sensitive materials and for introducing the packaged materials into a reactor Process for airtight and/or moisture-proof packaging of air-sensitive and/or moisture-sensitive materials for the introduction of the packaged materials in a chemical reactor. Described is a process for the airtight and/or moisture-proof packaging of air-... | 10/19/1999 |
| 5935275 | Process for producing weakly agglomerated nanoscalar particles A description is given of a process for producing weakly agglomerated, densified and/or crystallized nanosize particles which is characterized in that either (a) a suspension containing amorphous or partially crystalline nanosize particles is produced in ... | 08/10/1999 |
| 5837211 | Compositions and method for foam control in Bayer process Methods of reducing foam in Bayer process liquor are provided, said methods comprising adding a composition to the Bayer process liquor that comprises a tri(alkoxy alkyl) phosphate and a hydroxyl group containing carrier.... | 11/17/1998 |
| 5807410 | Process for removing elemental sulfur from a gas stream The invention relates to a process for removing elemental sulfur which is present in a gas in the form of vapor and/or entrained particles, in which process the gas to be treated is cooled. The gas to be treated is introduced into a heat exchanger at the ... | 09/15/1998 |
| 5660599 | Process for the recycling of spent indium oxide-tin oxide sputtering targets Compacted ITO material is ground to a powder with particles in the size range of less than 500 μm, whereupon the powder thus obtained is molded into new target blanks, either alone or in a mixture with unused ITO powder, under the simultaneous action of ... | 08/26/1997 |
| 5578285 | Process for reducing the average particle size of ammonium paratungstate powders A process for reducing the average particle size of an ammonium paratungstate powder having the steps of heating the ammonium paratungstate powder at a temperature of between about 110° C. to about 205° C. for a time sufficient to reduce the average par... | 11/26/1996 |
| 5433932 | Process to recover azide values from azide-based gas generating materials In a process for recovering an alkali metal azide from a waste gas generating material containing the alkali metal azide and a metal oxide reactable with the azide, the gas generating material is mixed with a solvent for the alkali metal azide. This produ... | 07/18/1995 |
| 5395806 | Dense, granular alkaline earth metal carbonate and alkali metal salt composition for use in glass manufacture A novel alkaline earth metal carbonate product for use as a raw material in the glass manufacturing process is disclosed. The alkaline earth metal carbonate becomes a part of the liquid phase in the glass furnace more readily and at a lower temperature; i... | 03/07/1995 |
| 5383940 | Process of producing solid sodium cyanide Invention relates to a process of producing solid sodium cyanide. The process according to the invention is characterized in that an aqueous sodium cyanide solution (1) of 30 to 45% by mass, containing up to 5% by mass solids, is granulated in two process... | 01/24/1995 |
| 5374766 | Ester and method for production thereof as well as hydrolysis process and determination of optical purity using this ester This invention relates to a novel ester which presents as (CF 1) and a method for the production of the same as well as a process for hydrolysis and a method for the determination of an optical purity using this ester, and the object thereof is to provide... | 12/20/1994 |
| 5366513 | Preparation of granulated alkaline earth metal carbonate A method for preparing granulated alkaline earth metal carbonate, particularly barium carbonate or strontium carbonate, by adding a binding agent and optionally water; granulating the resulting mixture, preferably in the presence of water; drying the gran... | 11/22/1994 |
| 5346511 | Antifoam/defoamer compositions for Bayer process A method for defoaming a Bayer process liquor, the method comprising the steps of adding to the Bayer process liquor an effective amount of an antifoam/defoamer composition comprising a polyether surfactant and a polyhydric alcohol fatty acid ester.... | 09/13/1994 |
| 5336271 | Method for increasing the proportion of a crystalline organic compound which remains uncrystallized in a composite particulate product and suppressing recrystallization A method for increasing the proportion of a crystalline organic compound which remains amorphous and suppressing recrystallization in which a crystalline organic compound and a hydrophilic polymer substance are fixed onto a surface of core particles by me... | 08/09/1994 |
| 5286470 | Silicate products The characteristics of compacted sodium silicate, in particular the attrition resistance,are improved by contacting the material with water in an agitated bed. A preferred route for adding moisture is the use of steam which gives efficient distribution in... | 02/15/1994 |
| 5281242 | Method for recovering magnesium sulfate products from mixtures of epsomite and halite A simple, efficient and inexpensive method of purifying magnesium sulfate from mixtures of epsomite and halite. The method allows for the preparation of substantially pure magnesium sulfate products. The method generally involves heating a mixture of epso... | 01/25/1994 |
| 5275793 | Direct coupled degasser and liquefier The present invention describes a method and apparatus in which solid gelatin chunks are liquefied, tempered, and debubbled in a single operation. The debubbling step is accomplished by evacuating and sealing off the loaded solid reservoir and heat exchan... | 01/04/1994 |
| 5269817 | Process and apparatus for the crystallization of a melt A melt is crystallized by introducing the melt into a gap formed between two belts. The gap-forming flights of the belts travel in opposite directions. An upper one of the flights is cooled so that an upper surface of the melt crystallizes thereon and is ... | 12/14/1993 |
| 5201923 | Stoichiometric B1-type tantalum nitride and a sintered body thereof and method of synthesizing the B1-type tantalum nitride The object of the present invention is to provide a stoichiometric B1-type tantalum nitride and a sintered body thereof. A B1-type tantalum nitride and a sintered body thereof, wherein a stoichiometric B1-type tantalum nitride is produced typically according t... | 04/13/1993 |
