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| Number | Title | Issue Date |
| 6255420 | Start-up process for gas phase production of polybutadiene A process for starting a polymerization of butadiene to produce polybutadiene in a gas phase reactor having a seed bed which comprises (i) passivating the reactor and the seed bed by introducing an aluminum alkyl having a concentration ranging from about ... | 07/03/2001 |
| 6255412 | Polymerization of a sticky polymer in the presence of a treated carbon black There is provided a polymerization of a sticky polymer in the presence of a catalyst under polymerization conditions using carbon black as the inert particulate material, the improvement comprises conducting said polymerization in the presence of a carbon... | 07/03/2001 |
| 4724063 | Catalyst for the electroreduction of oxygen The invention is an electrochemical cell comprising: (a) an anode; and (b) a cathode having a pyropolymer present on at least a portion of its surface.... | 02/09/1988 |
| 4705614 | Cell with improved electrolyte flow distributor In a stacked plurality of similar electrolysis cells, each cell having an overhead gas for accumulating gasses produced thereby, the apparatus of the present disclosure includes a shaped transition tube connected to each cell. Inlet liquids and outlet gas... | 11/10/1987 |
| 4694881 | Method for making thixotropic materials A process for forming a liquid-solid composition from a material which, when frozen from its liquid state without agitation, forms a dendritic structure. A material having a non-thioxotropic-type structure, in a solid form, is fed into an extruder. The ma... | 09/22/1987 |
| 4694882 | Method for making thixotropic materials A process for producing a liquid-solid composition comprising heating a liquefiable material sufficiently to form a liquid phase with solid dendritic particles therein without completely liquefying the material and subjecting said liquid-solid material to... | 09/22/1987 |
| 4670123 | Structural frame for an electrochemical cell The invention is a structural frame adapted for use in an electrochemical cell comprising: a plastic member with a plurality of horizontally and vertically spaced-apart shoulders protruding outwardly from opposing generally parallel first and second surfa... | 06/02/1987 |
| 4668371 | Structural frame for an electrochemical cell An electrochemical cell structure frame and cell utilizing same comprising an organic plastic member having electrically conductive inserts extending through annular shoulders on respective coplanar surfaces of the plastic member. Electrically conductive,... | 05/26/1987 |
| 4668372 | Method for making an electrolytic unit from a plastic material The invention is a method for making an electrolytic unit having a substantially planar, plastic, plastic member; a plurality of horizontally and vertically spaced apart shoulders on each side of the plastic member projecting outwardly therefrom and annularly ... | 05/26/1987 |
| 4666580 | Structural frame for an electrochemical cell The present invention is a structural frame particularly suitable for use in an electrochemical cell. The frame comprises an organic plastic member with a plurality of horizontally and vertically spaced-apart shoulders protruding outwardly from opposing g... | 05/19/1987 |
| 4666579 | Structural frame for a solid polymer electrolyte electrochemical cell A structural frame adapted for use in a solid polymer electrochemical cell, which comprises a generally planar organic plastic member having a plurality of horizontally and vertically spaced-apart shoulders protruding outwardly from opposing generally cop... | 05/19/1987 |
| 4654136 | Monopolar or bipolar electrochemical terminal unit having a novel electric current transmission element The invention is an electrochemical terminal unit suitable for use in monopolar or bipolar electrochemical cells comprising: an electric current transmission element in the form of a substantially planar, continuous electrically conductive body having a plural... | 03/31/1987 |
| 4654104 | Method for making an improved solid polymer electrolyte electrode using a fluorocarbon membrane in a thermoplastic state The invention is a method for forming a solid polymer electrolyte structure comprising: (a) heating a fluorocarbon membrane, while it is in its thermoplastic form, to a temperature at which it softens; (b) contacting a plurality of electrically conductive, cat... | 03/31/1987 |
| 4650551 | Supported ion exchange membrane films The invention is a method for forming a supported membrane film comprising: (a) at least partially coating a polytetrafluoroethylene fabric with a sizing composition; (b) contacting the coated polytetrafluoroethylene fabric with a membrane film having sites co... | 03/17/1987 |
| 4650711 | Method for sizing polytetrafluoroethylene fabrics The invention is a method for sizing polytetrafluoroethylene fabrics comprising: (a) forming a sizing composition of a perfluorinated polymer containing sites convertible to ion exchange groups and a treating agent having: a boiling point less than about ... | 03/17/1987 |
| 4647360 | Inert carbon fiber diaphragm A diaphragm or membrane for use in electrolysis cells resistant to chemical action thereof is disclosed. In the preferred and illustrated embodiment, a fluoropolymer binder cooperative with a random mix of carbon fibers up to about 13 mm long and up to ab... | 03/03/1987 |
| 4586999 | Three layer carbon based electrode The invention is an electrode comprising: (a) an electrically conductive first layer having a plurality of interconnecting passageways of an average diameter of from about 0.1 to about 1.0 microns, said first layer containing from about 2 to about 10 weight pe... | 05/06/1986 |
| 4581105 | Electrochemical cell operating near the critical point of water The invention is a method for operating an electrochemical cell of the type having an anode and a cathode which are in contact with an aqueous electrolyte in the presence of at least one electroactive species, said method comprising: electrochemically con... | 04/08/1986 |
| 4578162 | Method for dissolving copper in the presence of iron The invention is a method for dissolving copper in the presence of iron comprising: (a) contacting the copper with an oxidant solution; (b) dissolving at least a portion of the copper into the solution; (c) controlling the copper ion concentration in the solution b... | 03/25/1986 |
| 4568442 | Gas diffusion composite electrode having polymeric binder coated carbon layer A gas diffusion composite electrode useful in an electrochemical cell comprising an electrochemically active layer and a backing layer, said active layer characterized as porous, homogeneous, hydrophilic, and electrolyte-permeable and comprising a sintere... | 02/04/1986 |
| 4457953 | Electrode material A particle suitable for use as an electrode material comprising a substrate at least partially coated with an admixture of a hydrophobic material and an electrochemically active, electrically conductive catalyst. The invention includes a method for producing t... | 07/03/1984 |
| 4445986 | Electrochemical cell having a separator-gas electrode combination The invention is an electrochemical cell containing a separator-gas electrode combination comprising a separator having a first and a second face adapted to permit the flow of fluids or ions therethrough; a gas electrode adapted to permit a liquid and a g... | 05/01/1984 |
| 4370216 | Electrolytic cell and anode for molten salt electrolysis An uncoated ceramic anode comprising titanium having a formal valence of +4; titanium having a formal valence of +3; and a dopant which prevents at least a portion of the titanium +3 from converting to titanium +4 when the ceramic anode is at operating ce... | 01/25/1983 |
| 4365627 | Filter-type respirator canister An improved canister for a filter-type respirator having an end-of-service life warning device which is located in a position such that all air flowing through the canister flows through the warning device after the air has flowed through at least about 5... | 12/28/1982 |
| 4358412 | Preparation of vinyl ethers The invention relates to a process to produce compounds represented by the general formula by decarboxylation of compounds represented by the general formula ##STR1## where a=0-3; b=0-3; provided a+b=2 or 3; Y.dbd.an acid derivative; X.dbd.Cl, I, or Br; M... | 11/09/1982 |
| 4358545 | Sulfonic acid electrolytic cell having flourinated polymer membrane with hydration product less than 22,000 An improved polymer for use as an ion exchange membrane in an electrolytic cell wherein the polymer has pendant chains containing sulfonic acid ion exchange groups and has an equivalent weight of between about 800 and about 1500. The polymers have a hydra... | 11/09/1982 |
| 4348429 | Process for silver coating of permeable substrates A permeable substrate is coated with a film of silver deposited from an aqueous electroless silver plating solution. The process provides substantially total extraction or depletion of the silver from the solution. The process permits deposition of closel... | 09/07/1982 |
| 4341606 | Method of operating electrolytic cells having massive dual porosity gas electrodes A process for operating an electrolytic cell having a relatively-massive dual porosity gas electrode particularly well suited and adapted for utilization as a vertically-disposed oxygen gas-bearing electrochemically reducing cathode in electrolytic cells ... | 07/27/1982 |
| 4340459 | Electrolytic cell with oxygen-depolarized cathodes A porous, two layer electrode which may be used as an anode or a cathode and a cell using one or more of the electrodes. The electrode is in a pocket shaped configuration with the inner layer having interstitial passageways which are larger in diameter th... | 07/20/1982 |
| 4337137 | Composite ion exchange membranes A composite, substantially completely fluorinated film containing ion exchange groups and its use as an ion exchange membrane in an electrolytic cell is described. The membranes are comprised of at least two layers wherein the layers have equivalent weigh... | 06/29/1982 |
| 4337211 | Fluorocarbon ethers having substituted halogen site(s) and process to prepare Novel perhalofluoro ethers and methods for preparing the same having generic formula, ##STR1## wherein a=0 or an integer greater than O; b=0 or an integer greater than O; n=zero or an integer greater than zero; Rf and R'f are each in... | 06/29/1982 |
| 4330654 | Novel polymers having acid functionality Polymers and the process for producing polymers by the polymerization of at least three monomers wherein at least one monomer is selected from the group consisting of tetrafluoroethylene, trifluoromonochloroethylene, trifluoroethylene, vinylidene fluoride... | 05/18/1982 |
| 4326963 | Multiple bed filtering apparatus and process A filter regeneration method comprising mixing precipitate deposited on a bed of filtering particles throughout the bed to thereby reduce the pressure drop across the filter generally occurring during use. Regeneration is conveniently accomplished by flui... | 04/27/1982 |
| 4317704 | Method of operating an electrolytic cell A method of operating an electrolytic cell comprising: forming a gas-liquid mixture of an oxygen-containing gas and a catholyte; and flowing the mixture through interconnecting passageways of a porous cathode, while the cathode is maintained at a voltage ... | 03/02/1982 |
| 4312720 | Electrolytic cell and process for electrolytic oxidation An electrolytic cell and a method of operating an electrolytic cell having an electrically conductive, foraminous separator support element which is maintained at a voltage potential sufficient to minimize the occurrence of substantial amounts of anodic r... | 01/26/1982 |
| 4312723 | Corrosion resistant electrolytic cell An electrolytic cell and its method of operation is described. The cell comprises an anode, a cathode and iron-containing metals exposed to the interior portions of the cell which are maintained at about the same electrical potential as the cathode. These... | 01/26/1982 |
| 4269691 | Oxygen electrode preparation Porous electrode bodies are effectively provided with efficient internal surface deposits of manganese oxide(s) catalyst formations by decomposition, under an atmosphere that can either be oxidizing, reducing or inert in nature, at an elevated temperature... | 05/26/1981 |
| 4260469 | Massive dual porosity gas electrodes A relatively-massive dual porosity gas electrode particularly well suited and adapted for utilization as a vertically-disposed oxygen gas-bearing electrochemically reducing cathode in electrolytic cells wherein, for efficient and practical, commercially-l... | 04/07/1981 |
| 4256545 | Method of oxygen electrode preparation and product thereof Porous electrode bodies are effectively provided with efficient internal surface deposits of manganese oxide(s) catalyst formations by decomposition in an oxidizing atmosphere at an elevated temperature of a pre-applied inorganic permanganate salt reagent... | 03/17/1981 |
| 4224129 | Novel oxygen electrode An oxygen gas-bearing, flow-through electrode has in associated, cooperative combination: (i) a porous, fluid-pervious and permeable, catalyst-bearing body section adapted to be operated in the fluid-flooded condition; coupled with (ii) means for intimate... | 09/23/1980 |
