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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7368283 | Agitation tank for storing beer yeast slurry According to the present invention, there is provided a stirred tank for storing yeast slurry to be supplied to fermentation tanks where fermented foods such as beer are fermented, is characterized in that a stirring impeller is provided within the stirred tank and ... | 05/06/2008 |
| 7230037 | Method for mixing a polyol component and an isocyanate component The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer. ... | 06/12/2007 |
| 7172337 | Low shear impeller One or more mixing impellers is carried on a driving shaft received in a mixing vessel. Impeller blades are angularly and/or axially distributed on the shaft and can be single staggered axially-spaced blades or groups of two or more placed angularly around the shaft... | 02/06/2007 |
| 7127919 | Methods and apparatus for homogenizing molten glass The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber (11) under conditions such that the magnitude of the shear stress τ on the chamber's wall (... | 10/31/2006 |
| 6834990 | Impeller for mixing small volumes of reaction materials Method and apparatus for mixing small volumes of reaction components. In one application, a plurality of removable vessels are placed in a parallel reactor, and reaction components are delivered to each vessel. An impeller is rotated in each vessel to mix the compon... | 12/28/2004 |
| 6808305 | Method and apparatus for mixing additives with sludge in a powered line blender A powered in-line blender for mixing additives to sludges or other flowable liquid/solid mixtures. The blender is particularly useful in a method of blending polymer to municipal sewage sludges to improve the dewatering characteristics, and thus improving total cost... | 10/26/2004 |
| 6726355 | Self-cleaning mix head having a longitudinal mixer for a molding system A mix head assembly including a mix chamber having a mixer rotatably mounted therein. The mixer extends for a longitudinal length and defines a multiple of vanes which agitate the fluid material components as the mixer is rotated. A plunger is movably mounted in the... | 04/27/2004 |
| 6585406 | Electrostatographic blender assembly and method The invention relates generally to development apparatus for mixing and applying developer material to a latent image on an image-bearing member in an electrostatographic reproduction machine, such as a copier or printer. More particularly, this invention... | 07/01/2003 |
| 6582116 | Apparatus and method for mixing small volumes of reaction materials Method and apparatus for mixing small volumes of reaction components. In one application, a plurality of removable vessels are placed in a parallel reactor, and reaction components are delivered to each vessel. An impeller is rotated in each vessel to mix... | 06/24/2003 |
| 6461034 | Use of a bubble paddle tumble stirrer to mix the contents of a vessel while the contents are being removed The contents of a vessel are mixed while the contents are being removed from the vessel. A bubble-paddle tumble stirrer having at least one linear array of rounded-edge blades is disposed horizontally in the vessel for rotation about the longitudinal axis... | 10/08/2002 |
| 6414054 | Continuous preparation of heat-vulcanizable silicone compositions High levels of treated fumed silica, processing fluid and high molecular weight silicone polymer are continuously compounded into a homogeneous silica filled heat-vulcanizable silicone composition by forming a premix in a continuous annular layer mixer an... | 07/02/2002 |
| 6386752 | Coagulation reaction device The present invention provides a concentration type aggregation reaction apparatus having a concentration screen, which enables an aggregation reaction to be conducted in sludge and the sludge to be concentrated by separation of a liquid by means of a sin... | 05/14/2002 |
| 6350054 | Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in com... | 02/26/2002 |
| 6334704 | Liquid ejection apparatus and liquid ejection method A liquid ejection apparatus has gutter bodies secured to an agitator shaft at predetermined inclination angles or gutter bodies or tubular bodies attached to these agitator shaft so that the size of the inclination angles are adjustable. The gutter bodies... | 01/01/2002 |
| 6331071 | Stirring device A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirrin... | 12/18/2001 |
| 6296384 | Vertical agitating apparatus Provided is a vertical agitating apparatus which can shorten the time of vertically uniform mixing, uniformalize flow rates in the vertical direction, and shorten the time of heat transmission in a deep liquid agitating tank, an agitating tank having a co... | 10/02/2001 |
| 6244741 | Stirring device A stirring device achieving high stirring efficiency and easy to wash and maintain, is provided. The stirring device includes a vertical cylindrical stirring vessel, a rotary shaft vertically extended within the stirring vessel for rotation, and a stirrin... | 06/12/2001 |
| 6224253 | Liquid pitcher with mixing device A liquid pitcher with mixing device for quickly and easily stirring settled liquids or powdered mixes in the pitcher. The liquid pitcher with mixing device includes a container having a side wall, a bottom wall, an open top, a pouring spout disposed at a ... | 05/01/2001 |
| 6022137 | Conditioner for processing raw grain composition to produce pelletized feed This invention relates to an apparatus and a method for hydrothermally processing a raw grain composition with steam in a conditioner as a preliminary step in the production of a pelletized feed product. More specifically, this invention is directed to an... | 02/08/2000 |
| 5738439 | Mixing apparatus A mixer for mixing particulates is provided having a housing including parallel side walls and end walls arranged orthogonally with respect to the side walls, and a cylindrical curved bottom wall blending tangentially into the side walls and meeting the e... | 04/14/1998 |
| 5628561 | System and method for continuously treating particulate material in a slurry in a high temperature and high pressure chamber employing intermittent feed A continuous particle treating system (10) is shown having an elongated treatment chamber (12) with a slurry supply network (14) connected to the inlet end (12a) of the chamber and an outlet network (16) connected to the outlet end (12b) of the chamber. T... | 05/13/1997 |
| 5489152 | Hazardous waste transportation and disposal An apparatus for holding hazardous waste made up of solids and liquids during transportation includes a tank made of material selected to be impervious to and non-corrodible by the hazardous waste and having a non-critical portion, an agitator in the tank... | 02/06/1996 |
| 5472278 | Stirring apparatus having blades creating a circulating flow A stirring apparatus includes a container with a rotary stirring shaft therein. On the opposite sides of the rotary stirring shaft are mounted an upper vertical flat blade and first inclined flat blades opposite to each other. A first vertical flat blade ... | 12/05/1995 |
| 5407270 | Stirring pitcher A pitcher with a stirring device including a lid which is firmly fitted in the top end of the pitcher. The lid includes a rotatable disc sitting in a recess in the lid and rotated by an eccentric knob. A stirring device including a stem is fitted centrall... | 04/18/1995 |
| 5399014 | Mixing apparatus A mixing apparatus including a vertical cylindrical mixing tank; a rotating shaft vertically installed at the center of the interior of the vertical cylindrical mixing tank; and a plurality of paddle impellers attached at upper and lower stages on the rot... | 03/21/1995 |
| 5304355 | Mixer-reactor equipment for treating fine solids with gaseous reagents A compact, heavy duty mixer-reactor is described which features a double-stage mixing/reaction chamber, one stage being of wall-baffled design and the other being unbaffled. Said mixer-reactor operates with a unique, two-stage impeller having a different ... | 04/19/1994 |
| 5297867 | Mixer apparatus A mixer apparatus includes a container having a first shaft diametrically directed through the container, with the first shaft including first and second blades mounted to the shaft oriented parallel to the shaft, with third and fourth shafts mounted coax... | 03/29/1994 |
| 5261746 | Method of transporting and blending slurries with an oscillating paddle system A method of transporting and processing a viscous slurry, mash, or insoluble in a liquid carrier wherein there is provided a container having a paddle system disposed therein, the paddle system configured to oscillate in a limited, back and forth fashion ... | 11/16/1993 |
| 5220382 | Development apparatus having a cross-mixing auger A dual auger development apparatus for use in an electrostatographic reproduction machine such as copier or printer, includes a pair of identical single piece auger devices and each having a shaft and a plurality of integrally formed partial blade members... | 06/15/1993 |
| 5211924 | Method and apparatus for increasing conversion efficiency and reducing power costs for oxidation of an aromatic alkyl to an aromatic carboxylic acid Improved mixing performance with reduced power input is obtained in an agitated oxidation reactor for converting an aromatic alkyl to the corresponding aromatic carboxylic acid by decreasing the clearance between the lowermost impeller element and the rea... | 05/18/1993 |
| 5204721 | Developer auger for use in an electrophotographic printing machine A developer auger possessing a plurality of flight segments is described for use in a development system of an electrophotographic printing machine. The developer auger includes a shaft and a first flight portion, mounted on the shaft, wherein the first f... | 04/20/1993 |
| 5166732 | Developer agitating method and developer agitating apparatus In a developer agitating method, a carrier and a toner are mixed by a spiral in an agitating passage to provide the developer. The developer is conveyed along the axis of the spiral through a high conveying speed section of the passage wherein the develop... | 11/24/1992 |
| 5160041 | Coagulation reaction tank A coagulation reaction tank comprises a cylindrical tank provided in the central part thereof with a rotary stirring mechanism furnished with stirring vanes and a filtration tank for introducing the liquid from within the cylindrical tank in the form of f... | 11/03/1992 |
| 5145255 | Stirring apparatus and stirring tower type apparatus for polmerization reactions In order to improve mixing efficiency of highly viscous fluid, while structural simplicity being maintained, two types of stirring impellers are employed in a single stirring apparatus. One of such stirring impellers is a large flat impeller and the other... | 09/08/1992 |
| 5129855 | Fish scaler apparatus A fish scaler to include an exterior cylindrical container mounting an interior cylindrical insert radially positioned within the exterior container by a matrix of positioning blocks directed to an exterior surface thereabout. A central axle is directed c... | 07/14/1992 |
| 5098669 | Stirring reactor for viscous materials A stirring reactor for a viscous material. The reactor comprises a stirring vessel; a revolvable shaft provided in the vessel; a surface layer stirring vane provided on the revolvable shaft in the vicinity of interface of the gas and the liquid to be stir... | 03/24/1992 |
| 5074671 | Mixing apparatus Conventional devices for mixing liquids include a container and some form of stirrer for one stage mixing. A two stage mixer for producing a homogeneous emulsion includes a container, a stirrer, and a preliminary mixer in the form of an arcuate plate defi... | 12/24/1991 |
| 5061319 | Process for producing cement building material A process produces a paste with improved workability. At least 30% by volume of the paste when cured under ASTM conditions crystallizes into monolithic crystals of calcium silicate hydrate exhibiting a unique crystalline structure and having improved comp... | 10/29/1991 |
| 4983046 | Mixer A mixer includes an agitating means and a material scraping means in a spherical casing. A mixer further includes a cracking-dispersing means for an easily cohesive powder or an impalpable powder. If crushing of particles need be restricted to a moderate ... | 01/08/1991 |
| 4964950 | Method and apparatus for dividing and uniting the flows of high-consistency fibre suspensions A method and an apparatus for dividing and uniting flows of high-consistency fibre suspensions. To prevent clogging of the distributor the fibre suspension is caused to flow into a space unitting the inlet and the outlet flows, where a turbulent flow exte... | 10/23/1990 |
