Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7320561 | System and method for handling bulk materials A bulk material handling system generally consisting of means for holding the material; means for conveying the material including a first conduit formed of a permeable material having an inlet communicating with an outlet of the material holding means and an outlet... | 01/22/2008 |
| 7228713 | Multi-stage vacuum distilling, cooling and freezing processes and apparatuses for solution separation and seawater desalination Multi-stage vacuum distilling, cooling, and freezing processes for solution separation and seawater desalination are implemented through multi-stage vacuum distilling, cooling, and freezing systems. The systems are set to their initial state for implementing constan... | 06/12/2007 |
| 7137759 | System and method for handling bulk materials A bulk material handling system generally consisting of means for holding the material; means for conveying the material including a first conduit formed of a permeable material having an inlet communicating with an outlet of the material holding means and an outlet... | 11/21/2006 |
| 7008544 | Hydrate-based desalination/purification using permeable support member Processes and apparatus are disclosed for separating and purifying aqueous solutions such as seawater by causing a substantially impermeable mat of gas hydrate to form on a porous restraint. Once the mat of gas hydrate has formed on the porous restraint, the portion... | 03/07/2006 |
| 5181396 | Method of freezing and separation A method of freezing and separation for concentrating solutions, such as waste waters of the process industry, by means of waste heat of the same process, by freezing the solution in a crystallizer operating at the triple point, by transferring the ice cr... | 01/26/1993 |
| 4883520 | Water treatment apparatus and method An apparatus for removing polluted clinging water from ice. The dirty ice pieces are introduced at the bottom of a column of water and are rinsed by progressively cleaner water as the ice pieces float to the surface.... | 11/28/1989 |
| 4810274 | Vacuum freezing ambient pressure melting (VFAPM) process and sub-triple point vapor processing unit for use therein A new vacuum freezing separation process entitled "Vacuum Freezing Ambient Pressure Melting (VFAPM) Process" and a new apparatus entitled .cent.Sub-Triple Point Vapor Processing Unit" for generating and liquefying a sub-triple point vapor have been introd... | 03/07/1989 |
| 4806318 | Apparatus for purifying crystals An apparatus for purifying crystals comprises a crystal purifying tower having a transverse cross-section of two partially overlapping circles, stirrers each comprising a rotational shaft passing through the center of each of the circles and having blade ... | 02/21/1989 |
| 4623372 | Crystallization process An improved crystallization process is disclosed for separating a crystallizable material and an excluded material which is at least partially excluded from the solid phase of the crystallizable material obtained upon freezing a liquid phase of the materi... | 11/18/1986 |
| 4608127 | Dibenzofuran distillation and crystallization process Separation and recovery of dibenzofuran of high purity is accomplished by distilling a coal tar fraction having boiling point range of 220° to 300° C. thereby producing a dibenzofuran fraction having a dibenzofuran content of not less than 30% by weight... | 08/26/1986 |
| 4588414 | Countercurrent, cooling crystallization and purification method for multi-component molten mixture A countercurrent, cooling crystallization and purification method for a multi-component molten mixture wherein the mixture is treated by a purification system comprising one or more crystallizers (1A, 1B) each having, at the respective upper portion, a cl... | 05/13/1986 |
| 4572785 | Water purifier unit A water purifier for producing potable water from contaminated water, the purifier includes a crystallizer chamber with a plurality of projecting freeze elements, and a water spray unit which directs a fine spray of water at the freeze elements to produce... | 02/25/1986 |
| 4557741 | Gradient column freeze concentration system An improved freeze concentration system of the type in which a slurry of crystals and mother liquor are formed in a crystallizer and fed to the concentrated end of a gradient column. The crystals grow in size in the column as they move to the dilute end o... | 12/10/1985 |
| 4505728 | Vacuum freezing multiple phase transformation process and apparatus for use therein Improved apparatuses and methods of operation for conducting the separation process entitled "Vacuum Freezing Multiple Phase Transformation Process (denoted as VFMPT Process)" have been introduced. Processing zones and valving means are properly arranged ... | 03/19/1985 |
| 4491462 | Continuous packed bed wash column Process for separating the ice crystals contained in a slurry of an aqueous olution and ice crystals from the aqueous solution and washing the ice crystals with an aqueous wash liquid, whereby a packed bed of ice crystals is created which is subjected to a... | 01/01/1985 |
| 4489571 | Fractional solidification process and apparatuses for use therein The present invention introduces a process for effectively washing a crystal-liquid (mother liquor) mixture with a mass of wash liquid to thereby form a mass of highly purified crystals and also introduces apparatuses for use therein. The purification is ... | 12/25/1984 |
| 4459144 | Multi-stage counter-current concentration system and method A system and method for concentrating aqueous beverages such as fruit juices, beer, wine, vinegar, tea, coffee, and the like in which a slurry of feed liquid and seed crystals is formed in a scraped surface heat exchanger of a first stage and supplied to ... | 07/10/1984 |
| 4453960 | Liquid-solid separation apparatus and method Provided is a freeze concentration apparatus and method which embody means designed, sized and arranged for inhibiting ice deposition including an enclosed cyclonic concentrator vessel having unobstructed, smooth faced interior walls.... | 06/12/1984 |
| 4453959 | Crystal washing and purification method A method for separating and purifying a crystallized component from a two-phase slurry of a crystallized component in a liquified multi-component mixture, the method including a purification column capable of withdrawing the crystallized component from th... | 06/12/1984 |
| 4430104 | Multi-stage countercurrent concentrating system and method and separator A separator particularly useful in freeze concentration systems and apparatus, particularly multi-stage countercurrent systems for concentrating aqueous feed liquid, but useful for other kinds of separators as well. The slurry to be separated enters a ves... | 02/07/1984 |
| 4420318 | Vacuum freezing process with multiple phase transformations of low pressure vapor The Vacuum Freezing Vapor Desublimation Desublimate Vaporization Process (denoted as VDDV Process) is an improved vacuum freezing process that is useful in separating solvent from a solution that contains one or more non-volatile solutes. It can be used i... | 12/13/1983 |
| 4406679 | Apparatus for and method of preparing crystals for washing The invention relates to an apparatus for and method of preparing a slurry for a purification apparatus such as a wash column. A slurry is produced in a crystallizer. The crystals are essentially removed from the concentrated mixture and transported to a ... | 09/27/1983 |
| 4372766 | Apparatus and method for concentrating a liquid mixture by freezing the solvent Apparatus comprising a vertical vessel having a lower downwardly pointed conical shell portion, an intermediate shell portion and an upper shell portion wider than the lower and intermediate portions and with all said vessel portions surrounding and defin... | 02/08/1983 |
| 4341085 | Freeze concentration apparatus and method Freeze concentrating an aqueous liquid mixture by feeding an aqueous liquid mixture to a freeze exchanger for indirect cooling by heat exchange to a cold fluid to form ice crystals in the liquid mixture; feeding the liquid mixture containing ice crystals ... | 07/27/1982 |
| 4338109 | Counter current crystallization process Continuous counter current multistage process for freeze concentration, iuding a step whereby the ice crystals in the first stage are separated from the mother liquor in a final separation step, the ice crystals being rejected and the mother liquor from ... | 07/06/1982 |
| 4332599 | Continuous packed bed wash column Process for separating the ice crystals contained in a slurry of an aqueous solution and ice crystals from the aqueous solution and washing the ice crystals with an aqueous wash liquid, whereby a packed bed of ice crystals is created which is subjected to... | 06/01/1982 |
| 4328677 | Peltier freeze concentration process The treatment of dilute solutions and freeze concentrations thereof by means of steam jet refrigeration pre-cooling of a feed solution sprayed into an absorber-freezer means in which heat is absorbed from the jet refrigeration and from which ice slurry is... | 05/11/1982 |
| 4316368 | Multi-stage counter-current concentrating method A system and method for concentrating aqueous beverages such as fruit juices, beer, wine, vinegar, tea, coffee, and the like in which a slurry of feed liquid and seed crystals is formed in a scraped surface heat exchanger of a first stage and supplied to ... | 02/23/1982 |
| 4314455 | Freeze concentration apparatus and process A freeze concentration apparatus comprising a cold concentrator tank; a conduit to deliver an aqueous liquid mixture feed stream to the cold concentrator tank; a conduit to feed the liquid mixture from the cold concentrator tank to a freeze exchanger for ... | 02/09/1982 |
| 4309878 | Process and apparatus for separating and purifying a crystalline material An apparatus and process for purifying and separating a crystalline compound from its impurities in a slurry containing same, said process comprising introducing said slurry under pressure into a cylindrical pressurized filter-washer having a substantiall... | 01/12/1982 |
| 4278503 | Low bromine content glacial acetic acid Excessive energy consumption of a combination of multi-fractionations and multi-distillations of concentrating aqueous acetic acid product of liquid phase oxidations, especially oxidation of liquid n-butane with oxygen gas while the butane is dissolved in... | 07/14/1981 |
| 4199961 | Method and apparatus for continuously freezing and melting a fluid mixture Method and apparatus for continuously freezing and melting a fluid mixture, for use in separating a fluid mixture into dilute and concentrated components which have been made separble due to the freezing. A turbine is used to produce mechanical energy to ... | 04/29/1980 |
| 4143524 | Process and apparatus for separating crystallizable materials from a multi-component system A process and apparatus are described for separating crystallizable mater from a liquid multi-component system involving a series of cycles wherein (a) the liquid is confined in a space having a large heat exchange surface; (b) heat is withdrawn from sai... | 03/13/1979 |
| 4099947 | Concentration of comestible liquids Orange or other fruit juice is concentrated by forming ice therein and separating the ice from the juice in a draining column followed by centrifugation.... | 07/11/1978 |
| 4046534 | Method for recovering fresh water from brine A process is disclosed for recovering fresh water from brine which includes introducing brine, which has been inoculated with a predetermined number of ice nuclei and is at about its freezing temperature, into an elongated crystal growth zone which is sup... | 09/06/1977 |
| 3996031 | Fractionation of multicomponent dimethylnaphthelenes feeds by selective crystallization A process and system for separating a preferentially crystallizable component A from a feed, wherein a series of zones are used between which mother liquor can flow without passage of crystallized material. Liquid feed is introduced to a zone other than t... | 12/07/1976 |
| 3992900 | Plural stage freeze crystallization with wash-water/concentrate interface control The invention is directed to an apparatus and method of purifying contaminated water by means of a two-step freeze crystallization process. The method and apparatus overcomes the serious problem caused by the freezing of water on the screen of the wash co... | 11/23/1976 |
| 3987641 | Freeze concentration recovery process for wood pulping Pulping liquor borne solids are concentrated within an aqueous solution by a successive plurality of freezing steps wherein a discrete quantity of the solution is crystallized in each step by freezing. The water crystals from each freezing step are subseq... | 10/26/1976 |
