Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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 |
| 7713386 | Apparatus for producing ethylbenzene or cumene The apparatus includes an alkylation unit connected to a first benzene recycle conduit, a feed conduit and an alkylation effluent conduit; a transalkylation unit connected to an polyalkylbenzene recycle conduit, a second benzene recycle conduit, and a transalkylatio... | 05/11/2010 |
| 7329330 | Method and device for the distillative processing of 1,6-hexanediol, 1,5-pentanediol and caprolactone A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in order to obtain the corresponding pure products, the working-up by di... | 02/12/2008 |
| 7267746 | Dividing wall distillation column control apparatus A control apparatus and control method for controlling the separation in a dividing wall distillation column of at least two feeds into at least three products is disclosed. The apparatus uses a temperature measuring device to measure the temperature of fluid in the... | 09/11/2007 |
| 7132038 | Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column ... | 11/07/2006 |
| 7129387 | Low capital implementation of distributed distillation in ethylene recovery An apparatus for recovering ethylene from a hydrocarbon feed stream, where the apparatus is a single distillation column pressure shell encasing an upper region and a lower region. The upper region houses an ethylene distributor rectifying section and the lower regi... | 10/31/2006 |
| 7090748 | Dividing-wall column with feed in whole or in part in the vaporous state and/or side stream take off in whole or in part in the vaporous state A dividing-wall column having a dividing wall which is essentially disposed along the long direction of the column is proposed, which divides the column interior into a feed part, a take off part, an upper shared column part and a lower shared column part, with feed... | 08/15/2006 |
| 7001490 | Purification of ammonia by distillation Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled ... | 02/21/2006 |
| 6958111 | Dividing wall column In a dividing wall column comprising as segments a) an upper column region (6), b) an inflow section (7), c) an offtake section (8) and d) a lower column regio... | 10/25/2005 |
| 6793770 | Evaporator The invention concerns an evaporator, especially for the sugar industry, with at least two heat exchangers, into the top of which the medium to be concentrated is loaded and which are heated with steam with different compositions and/or different pressures in a cros... | 09/21/2004 |
| 6770173 | Column partition Partitions for columns for the separation of components or chemical reactions are assembled from plates or wall elements provided with plug and clamp connectors along respective edges and formed by strips so that the partitions can be easily and safely assembled and... | 08/03/2004 |
| 6682633 | Apparatus for cocurrent fractional distillation A modular apparatus for fractional distillation and other forms of vapor-liquid contacting is presented. The apparatus performs cocurrent contacting of vapor and liquid in a number of identical structural units which are placed in horizontal layers in a c... | 01/27/2004 |
| 6645350 | Dividing wall column fractionation tray Problems generated by heat transfer through the vertical dividing wall of a trayed "dividing wall column" and into a downcomer of a tray are mitigated by providing a separate vertical isolation wall between the downcomer and dividing wall. The isolation w... | 11/11/2003 |
| 6582564 | Distillation apparatus and distillation method A distillation apparatus includes a column body; a partition for dividing the interior of the column body; a first distillation section composed of an enriching section and an exhaust section; a second distillation section composed of an enriching section... | 06/24/2003 |
| 6558515 | Dividing wall fractionation column control system and apparatus A control method and apparatus for regulating the rate of vapor flow in the two adjacent sections of a dividing wall fractional distillation column are presented. The liquid level on a tray at the top of each section is used to control the rate of vapor f... | 05/06/2003 |
| 6551465 | Dividing wall column control system The operation of the dividing wall section of a dividing wall column is controlled by a control apparatus comprising a ratio controller which divides the liquid flowing into the dividing wall section. The rate of return of overhead liquid to the column is... | 04/22/2003 |
| 6514387 | Rectifying column for extractive distillation of close-boiling or azeotropic boiling mixtures The invention relates to a rectifying column for extractive distillation, comprising a column main section (204) and a raffinate section (205) above said main section, an evaporator (208) situated on the lower end of the column, an inlet (214) disposed be... | 02/04/2003 |
| 6395138 | Liquid dispenser for distilling column, and corresponding distilling column This distributor (1) includes: a primary distributor (3) which delimits a closed volume provided with liquid predistribution openings (8) which open into the column; a device for feeding the primary distributor (3) with liquid under a pressure very much greate... | 05/28/2002 |
| 6387222 | Continuous isolation of a high-melting material by distillation A method of distillation for separating a material which is solid at ambient temperature from a lower boiling and lower melting point material, and the apparatus.... | 05/14/2002 |
| 6365006 | Method for distilling a mixture of substances and device for realizing the same The present invention pertains to the alcohol processing industry and relates to a method that includes feeding a mixture into a distillation column which is fitted with contact devices for discharging the vapors through the top of said column. This metho... | 04/02/2002 |
| 6348137 | Method and apparatus for fractional distillation An apparatus and a method for separating a liquid mixture by fractional distillation. The apparatus includes at least two chambers with a conduit from the lower portion of a chamber which contains liquid to the upper portion of an adjacent chamber, a sour... | 02/19/2002 |
| 6291734 | Integrated low pressure depropanizer/debutanizer column An integrated debutanizer and low pressure depropanizer column and process for separating a feed stream comprising C3 's, C4 's and C5 + is disclosed. A single shell houses a refluxed upper portion and a lower portion of t... | 09/18/2001 |
| 6165325 | Vacuum vessel for continuous or semicontinuous treatment of fatty oils A vacuum vessel for continuous or semicontinuous treatment of fatty oils in connection with deodorization includes spaces through which the oil which is to be treated is brought to pass. The vessel also contains U-tubes used to heat or cool the oil and pe... | 12/26/2000 |
| 6077985 | Integrated deethanizer/ethylene fractionation column An integrated deethanizer and ethylene fractionation column and process for separating a feed stream comprising ethylene, ethane and C3+ is disclosed. A single shell houses a refluxed upper portion and a lower portion of the column. A generall... | 06/20/2000 |
| 5914012 | Dividing wall column for continuous fractionation of multicomponent mixtures by distillation A dividing wall column for separating a mixture into 3 or more fractions by distillation is described, where at least one dividing wall is detachably attached within the dividing wall column.... | 06/22/1999 |
| 5902460 | Multi-stage fractional distillation process and apparatus A distillation column suitable for the separation of a three component feed mixture is provided wherein the fractional distillation column utilizes a vertical partition and a baffle to prevent feed mixture from taking a direct flow path from the feed inle... | 05/11/1999 |
| 5897748 | Distillative separation of mixtures and apparatus for this purpose To compensate the bypassing, at the edges, of the liquid flowing downward in a distillation column, in order to achieve optimum mass transfer with the ascending vapor, a specific nonuniform distribution of the liquid trickling density over the column cros... | 04/27/1999 |
| 5853567 | Methods and apparatus for the viscosity reduction of heavy hydrocarbon feedstocks A method for reducing the viscosity of a liquid heavy hydrocarbon feedstock comprising the steps of bringing said feedstock to a temperature capable of cracking of at least a portion of the hydrocarbons present in said feedstock and introducing said feeds... | 12/29/1998 |
| 5776315 | Oil reclamation device An improved oil reclamation device for removing contaminates from lubricating oils and hydraulic fluids. A first feature of this oil reclamation device an improved utilization of space, which provides the benefit of a compact installation. Another benefit... | 07/07/1998 |
| 5707510 | Crude oil emulsion treating apparatus and method The treating apparatus and method of the present invention improve the efficiency and reliability of flash treating crude oil by including a recycled oil pumping loop that takes crude oil from a flashing section of a vessel and feeds it to either the inle... | 01/13/1998 |
| 5643418 | Method of and arrangement for separating fluid mixtures A device for intercepting liquid obtained from a stream of mixed fluids contains an enclosure having an upper opening and a lower opening. The upper opening is connectible to a source of suction while the lower opening is connectible to a source of the mi... | 07/01/1997 |
| 5271808 | Apparatus from waste oil for reclaiming a useful oil product An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boil... | 12/21/1993 |
| 5200040 | Method for rectification and apparatus therefor A method for rectification includes steps of supplying raw materials to a rectifying column from a raw material feed pipe; returning a refluent fluid from a refluxing pipe to the column; leading a hold-up liquid from a bottom tank having a higher surface ... | 04/06/1993 |
| 5091060 | Fractional distillation column and method for its use A fractional distillation column and method for its use are provided which employ n sets of trays, where n is an integer and nࣙ2. An equivalent number n of separate liquid streams are passed generally downwardly through the column so that each liquid st... | 02/25/1992 |
| 4919257 | Condensate skimming reflux column In a gas dehydration system utilizing glycol a condensate skimming reflux column separates and skims natural gas condensate off glycol by a settling tank-type reservoir having a syphon-type glycol outlet to a reflux section spaced a predetermined distance... | 04/24/1990 |
| 4826574 | Distillation column with helical liquid flow and dissymmetric spacing of the trays A circular section column with helical liquid flow is divided by a vertical wall 10 into two gas and vapor tight sectors A and B, each sector housing a series of trays. The trays disposed are designated respectively 1a, 2a and 3a for sector A and 1b, 2b a... | 05/02/1989 |
| 4814044 | System for treating heavy hydrocarbon-water mixture In a technique for recovering hydrocarbon values from a heavy hydrocarbon-water mixture, the mixture is first delivered through a sub-assembly to remove solid particulates. Then the mixture is delivered through a series of heat exchanger--kettle arrangeme... | 03/21/1989 |
| 4673413 | Apparatus for gasifying waste oil An apparatus for treating carbonaceous material, e.g. waste oil by effecting the gasification thereof to produce a relatively high BTU content gas to supplement or substitute for natural gas. This is attained by a furnace in which the products of combusti... | 06/16/1987 |
| 4629534 | Fractional distillation apparatus and method An apparatus and method are provided for the fractional distillation of liquids in a fractionation column wherein cool liquids from the bottom tray of the column are effectively prevented from passing out directly with bottoms product before first passing... | 12/16/1986 |
| 4601788 | Apparatus for fractionation reboiling A distillation method and apparatus which comprises (a) a distillation zone adapted for the countercurrent contact of liquid and vapor, (b) a reboiler feed liquid compartment (c) means for directing distillation zone liquid into the reboiler liquid feed c... | 07/22/1986 |
| 4582569 | Mass transfer apparatus Mass transfer apparatus such as a distillation or rectification column which is divided so that the vapor flow is in two streams each in a separate zone, and wherein in each zone the liquid/vapor contacting stages have an inlet and an outlet disposed on o... | 04/15/1986 |
