Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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 |
| 7422675 | Process for changing anodes in an electrolytic aluminum production cell including adjustment of the position of the anode and device for implementing the process A process for changing an anode of a cell for the production of aluminum by fused bath electrolysis including a plurality of anodes. According to the invention, an anode handling tool is used including a positioning device, a gripping device and a sensor detecting t... | 09/09/2008 |
| 7378009 | Method of controlling an aluminum cell with variable alumina dissolution rate A method of controlling an aluminum reduction cell including the following steps: maintaining alumina concentration within preset limits by alternating base, underfeed and overfeed modes; measuring cell voltage and potline amperage... | 05/27/2008 |
| 7282133 | Cermet inert anode assembly heat radiation shield A method of protecting an inert anode assembly (16) operating in an electrolysis cell (10) for producing metal when an adjacent assembly (16′) is removed exposing remaining assemblies to low ambient temperatures (40) by utilizing heat r... | 10/16/2007 |
| 7175749 | Method and device for detecting anode effects of an electrolytic cell for aluminum production Process for early detection of an anode effect in an aluminum production cell based on molten salt electrolysis. The cell comprises at least one anode, at least one cathode and cathode connecting conductors and anode connecting conductors. The process comprises: | 02/13/2007 |
| 7169270 | Inert anode electrical connection An improved electrical connection between an inert anode and a conductor rod is disclosed. The conductor rod has a smaller diameter than a hole in the anode such that a gap is provided between the conductor rod and the anode. The gap is filled with an electrically c... | 01/30/2007 |
| 7118666 | Protecting an inert anode from thermal shock A method for protecting anode assemblies in an electrolytic cell from thermal shock is disclosed. The method generally involves applying a thermal insulating layer (8, 16) to the anode (2) prior to preheating the anode assembly in a furnace, where the ... | 10/10/2006 |
| 7033479 | Electrolytic cells with renewable electrodes structures and method for substituting the same The invention is relative to an electrolytic cell comprising electrodes spaced apart from the back-wall by means of ribs, wherein a portion of the contact surface between the electrodes and the ribs is free from constraints in order to permit the complete removal of... | 04/25/2006 |
| 7001497 | Process and apparatus for positioning replacement anodes in electrolytic cells A spent anode is replaced with a new anode in an electrolysis cell having an anode bus bar and an anode rod contacting the bus bar. A desired distance (D4) from the bus bar to a reference point on or adjacent to an anode rod for the new anode is calculated, t... | 02/21/2006 |
| 6922886 | APT-1 (anode placement tool-model 1) An apparatus designed for installing anode bracelets upon pipes used in cathodic protection systems. The apparatus includes a pair of grasp booms which hold the anode bracelet during installation of the bracelet around the pipe to be cathodically protected. The gras... | 08/02/2005 |
| 6773574 | Method and apparatus for removing thimbles from the stubs of an anode An apparatus and method for removing thimbles (12) from stubs (20) of an anode yoke which includes the step of advancing a ram (20) towards each stub with the force applied by the ram against the stub being limited to a preset maximum, and anoth... | 08/10/2004 |
| 6656340 | Aluminium production cell design A cell of advanced design for the production of aluminium by the electrolysis of an aluminium compound dissolved in a molten electrolyte, has a cathode (30) of drained configuration, and at least one non-carbon anode (10) facing the cathode both covered b... | 12/02/2003 |
| 6558526 | Method of converting Hall-Heroult cells to inert anode cells for aluminum production A method is provided for retrofitting conventional aluminum smelting cells with inert anode assemblies which replace the consumable carbon anodes of the cell. The inert anode assemblies are pre-heated prior to introduction into the operating cell. Insulat... | 05/06/2003 |
| 6551489 | Retrofit aluminum smelting cells using inert anodes and method Conventional aluminum smelting cells are retrofitted with inert anode assemblies which replace the consumable carbon anodes of the cell. The inert anode assemblies may include multiple inert anodes, and may also include insulation for reducing heat loss d... | 04/22/2003 |
| 6521116 | Cells for the electrowinning of aluminium having dimensionally stable metal-based anodes A cell for the electrowinning of aluminium comprising one or more anodes (10), each having a metal-based anode substrate, for instance comprising a metal core (11) covered with an metal layer 12, an oxygen barrier layer (13), one or more intermediate laye... | 02/18/2003 |
| 6478945 | Method for producing highly pure aluminum primary base metal The present invention provides a method of producing a highly pure aluminum primary base metal having a purity of at least 99.95 wt % (3N5), or a still higher purity close to the 4N that is a purity value of a secondary refined base metal. Alumina, the Si... | 11/12/2002 |
| 6440294 | Crust hole repair for electrolytic cells A process for repairing a hole in the crust of an electrolytic cell. The hole is repaired by covering it with a receptacle containing solid particles. The receptacle comprises a polymeric material. More preferably, the receptacle comprises a cellulosic ma... | 08/27/2002 |
| 6416649 | Electrolytic production of high purity aluminum using ceramic inert anodes A method of producing commercial purity aluminum in an electrolytic reduction cell comprising ceramic inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The ceramic inert anodes used in the proces... | 07/09/2002 |
| 6413406 | Electrocatalytically active non-carbon metal-based anodes for aluminium production cells A non-carbon, metal-based high temperature resistant anode of a cell for the production of aluminum has a highly conductive metal-based substrate coated with one or more electrically conductive adherent intermediate protective layers and an outer layer wh... | 07/02/2002 |
| 6402928 | Aluminium production cell with an insulating cover having individually removable sections A cell of advanced design for production aluminum by the electrolysis of an aluminum compound dissolve in a molten ectrolyte, has a cathode (30) of drained configuration, and at least one non-carbon anode (10) facing the cathode both covered by the electr... | 06/11/2002 |
| 6402927 | Distribution of alumina-rich electrolyte in aluminum electrowinning cells The invention relates to a method of producing aluminum in an electrolytic cell, particularly in a drained cell, such cell comprising a cathode (20) and facing anodes (10), each anode (10) being spaced apart in its operative position from the cathode (20)... | 06/11/2002 |
| 6319388 | Method of managing the operation of a plant for the production of aluminium by igneous electrolysis and aluminium production plant for implementing this method This method of managing the operation of a plant for the production of aluminium by igneous electrolysis, of the type having a set (2, 3) of two electrolysis tankrooms, each having a series of tanks, the tankrooms being mutually parallel and symmetrical w... | 11/20/2001 |
| 6183620 | Process for controlling the A1F3 content in cryolite melts A process is provided for controlling the AlF3 content in cryolite melts for aluminum reduction, wherein the temperature of the melt is measured. In order to produce a very precise process which makes it possible to perform the aluminum reducti... | 02/06/2001 |
| 6090264 | Tool holding device for the extraction and transfer of anodes in the center of an aluminum factory and equipment to put into operation such a device A tool holder module intended to be used in lifting gear, characterized in that it is equipped with two independently motorized lifting member: a first member, which consists of a lifting system with cable(s) wrapped over electrically motorized drum(s) an... | 07/18/2000 |
| 5956842 | Butt and thimble press An apparatus for breaking the anode butt (15) and stripping the thimbles (13) from the yoke stubs (12) of an anode. The apparatus includes a support frame (20), a fixed plate assembly (21) secured to the supporting frame (20) and a ram assembly (22) exten... | 09/28/1999 |
| 5759382 | Injection of powdered material into electrolysis cells In an electrolysis cell wherein powdered material are added to a bath of molten electrolyte, the anode is provided with a duct through which the powdered material may be fed to the electrolyte. Simultaneously, a gas which is preferably inert, is also fed ... | 06/02/1998 |
| 5618403 | Maintaining protective surfaces on carbon cathodes in aluminium electrowinning cells A cell for the electrowinning of aluminium by the electrolysis of alumina dissolved in a molten fluoride-based electrolyte comprises a cathode composed of a carbon body having an aluminium resistant aluminium-wettable surface layer containing particulate ... | 04/08/1997 |
| 4956054 | Method and apparatus for removing carbon anodes in aluminum electrolysis cells Method used in connection with the exchange of anodes in cells producing aluminum by electrolysis according to the Hall-Heroult process. Each cell comprises a cathode containing a fused salt bath or aluminum oxide dissolved in cryolite, and above the cath... | 09/11/1990 |
| 4784733 | Recycling of spent potliner A method is disclosed for recycling spent potliner carbon from an aluminum reduction cell. The spent potliner is treated so as to avoid the cracking problem normally seen when the potliner is used in substantial amounts in Soderberg anodes.... | 11/15/1988 |
| 4670110 | Process for the electrolytic deposition of aluminum using a composite anode A process for the electrolytic deposition of aluminum at low temperatures and low electrical potential in which the anode is the sole source of aluminum and comprises a composite mixture of an aluminous material such as aluminum oxide and a reducing agent... | 06/02/1987 |
| 4659442 | Method of reducing the loss of carbon from anodes when producing aluminum by electrolytic smelting, and an inert anode top for performing the method Carbon losses are reduced in that an operative carbon anode is glued beneath a carbon core in an inert anode top. The operative anode carbon is almost completely consumed. The anode top is then cleaned and a new operative carbon is glued to its underside.... | 04/21/1987 |
| 4447300 | Electrode holder for use in fusion electrolysis An axially displaceable electrode holder for use in fusion electrolysis, for holding active parts of self-consuming or of slowly self-consuming material by a screw nipple or the like. The electrode holder can have a cooling means with an inflow channel an... | 05/08/1984 |
| 4285785 | Metal producing method In the production of metal by electrolysis of a metal compound dissolved in a molten solvent, the electrolysis is carried out with a bed of conductive pebbles.... | 08/25/1981 |
| 4221641 | Method of changing electrodes in a reduction cell Anodes are releasably attached to an anode beam. If an anode is burnt-away so far that it must be exchanged, then it is exchanged with the help of a crane. The burnt-away anode is pulled out until, after passing through a certain travel the surface facing... | 09/09/1980 |
| 4119505 | Process and device for cleaning the butts of worn anodes from an igneous electrolysis cell The invention relates to a process and apparatus for ridding the worn anode butts of electrolysis bath crusts which adhere to them. The apparatus essentially comprises a jack supporting a pneumatic drill equipped with a percussion tool. The jack is supported b... | 10/10/1978 |
| 4021318 | Process for producing aluminum A process for producing aluminum by electrolyzing aluminum oxide dissolved in a molten salt bath using a Soderberg anode with vertical contact studs, wherein a molded anode paste having a composition that does not form a soup-like or liquid layer is used,... | 05/03/1977 |
