Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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 |
| 4627869 | Method for inhibiting axillary bud growth A method for inhibiting bud growth and development on plants by applying to the plants a bud growth inhibiting amount of dimethyl 2,3,5,6-tetrachloroterephthalate is disclosed.... | 12/09/1986 |
| 4617456 | Long life corrosion proof electroplating immersion heater A flexible electric heating assembly for immersion heating of highly corrosive liquids, such as electroplating solutions, includes an iron-nickel-chronium resistance element disposed within a thin-walled stainless steel tube and electrically insulated the... | 10/14/1986 |
| 4610808 | Conductive resinous composites This invention is directed to resinous compositions which are generally metal-filled and which also contain hard filler materials. This combination produces unexpectedly better electrical conductivity than metal-filled material without the hard filler mat... | 09/09/1986 |
| 4596669 | Flame retardant thermoplastic molding compositions of high electroconductivity Flame retardant, thermoplastic molding compositions of high electroconductivity comprising between about 2% and about 45% by weight of finely divided conductive carbon black particles substantially uniformly dispersed within a cementitious matrix having a... | 06/24/1986 |
| 4570021 | Preparation of ketones Disclosed is a method for the preparation of ketones by a catalytic vapor phase reaction of using reactants such as ketones with carboxylic acids and/or carboxylic acid precursors. An example of such a reaction is that of acetone with pivalic acid over a ... | 02/11/1986 |
| 4548929 | Insecticidal and nematocidal heterobicyclic hydroximinates, thiohydroximidates, and carbamate esters, composition, and method of use thereof Novel heterobicyclic compounds of Formula I, processes for preparing same and pesticidal compositions and methods are described. ##STR1##... | 10/22/1985 |
| 4545810 | Herbicidal and plant growth regulant diphenylpyridazinones Novel compounds of the general formula ##STR1## as well as novel compositions thereof and methods of using same are described. These compounds have been found to be valuable for controlling, modifying and inhibiting the growth of plants.... | 10/08/1985 |
| 4490283 | Flame retardant thermoplastic molding compounds of high electroconductivity Flame retardant, conductive plastic molding compositions are provided in granular form comprising a thermoplastic resinous matrix through which are distributed fine, solid anisometrically shaped metallic particles in amounts totalling between about 12% an... | 12/25/1984 |
| 4474053 | Storage or disposal cavern leak detection and loss prevention An environmentally acceptable gas is provided, under pressure, in the annulus of a casing arrangement which connects a wellhead to an underground storage zone containing stored product. Monitoring of the gas permits detection of leaks that might occur thr... | 10/02/1984 |
| 4461772 | Additives for improving ruminant feed utilization At least one compound defined by one of the following formulae: ##STR1## where X represents Cl, Br, ##STR2## NHSO2 CH3, ##STR3## or --SCH3, and n is 1 or 2; and have been administered to animals to improve t... | 07/24/1984 |
| 4444642 | Dimensionally stable coated electrode for electrolytic process, comprising protective oxide interface on valve metal base, and process for its manufacture An electrode for use in an electrolytic process is provided with a mixed oxide interface between a titanium base and an outer coating. The mixed oxide is formed at said interface by means of titanium from the base and noble metal from a solution containin... | 04/24/1984 |
| 4444640 | Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for chloralkali electrolytic cells Diaphragm coated electrodes, processes for producing these diaphragm coated electrodes, and application of the diaphragm coated electrodes in electrolytic cells used in the electrolysis of brine to produce chlorine and caustic are disclosed.... | 04/24/1984 |
| 4442525 | Electrode for arc furnaces An arc furnace electrode for the production of electric steel, comprising a metallic top portion and a consumable, replaceable bottom portion threadably interconnected. The top portion is provided with coolant feed and return ducts and includes a protecti... | 04/10/1984 |
| 4399020 | Device for waste water treatment This invention is directed to a membrane or diaphragm-free electrolytic cell device for removal of a metal(s) present as a contaminant(s) in waste water comprising a nonconductive cell box having an upper peripheral flange, anode and cathode bus bars loca... | 08/16/1983 |
| 4382904 | Electrode backing layer and method of preparing This disclosure is directed to the preparation of cohesive, self-sustaining electrode backing layers by a method comprising mixing from about 20 to about 50 weight parts of polytetrafluoroethylene (PTFE) having a particle size ranging from 0.05 to 0.5 mic... | 05/10/1983 |
| 4382875 | Extraction treatment This disclosure is directed to a process for extracting PTFE-wetting agent from PTFE particles containing small amounts of wetting agent in admixture with carbon particles comprising contacting said mixture with an organic liquid medium capable of extract... | 05/10/1983 |
| 4370284 | Non-bleeding electrode This disclosure is directed to a non-bleeding gas electrode for operation under the rigors of high current density and to the active layer thereof. This active layer is comprised of 60 to 90 weight percent high surface area, electroconductive carbon (with... | 01/25/1983 |
| 4357262 | Electrode layer treating process The present disclosure is directed to a process for treating gas electrodes containing a wetproofing (backing) layer which contains a polytetrafluoroethylene (PTFE) in conjunction with a water-soluble pore-forming agent and a PTFE-containing active layer ... | 11/02/1982 |
| 4354917 | Gas electrode with asymmetric current distributor This disclosure is directed to an asymmetric woven wire mesh current distributor for an electrode containing more conductive elements (portions) in one direction than in the other direction when installed in use in an electrode so that the greater number ... | 10/19/1982 |
| 4354916 | High current density electrical contact device The present invention is directed to fluid-tight, high current density-stable electrical contacts for conductively joining components of an electrolytic cell, e.g., anode and cathode plates, comprising a spring-like spiral or coil of electroconductive met... | 10/19/1982 |
| 4345981 | Anodically polarized surface for biofouling and scale control Biofouling and scale control in conductive aqueous systems is effected on metal, preferably valve metal such as titanium, surfaces on which such fouling normally occurs by applying thereto a stable electrocatalytic coating, anodically polarizing said valv... | 08/24/1982 |
| 4339325 | One pass process for forming electrode backing sheet This disclosure is directed to a one pass process for forming a porous, uniaxially oriented polytetrafluoroethylene sheet which is coherent and suitable for utilization as an electrode backing (wetproofing) sheet and the resulting backing sheet. Particula... | 07/13/1982 |
| 4338181 | Electrode containing extraction treated particles This disclosure is directed to a process for extracting PTFE-wetting agent from PTFE particles containing small amounts of wetting agent in admixture with carbon particles comprising contacting said mixture with an organic liquid medium capable of extract... | 07/06/1982 |
| 4337140 | Strengthening of carbon black-teflon-containing electrodes This disclosure is directed to strengthening carbon black-particulate "Teflon" (PTFE) mixes destined to be formed into active layers in air cathodes, which comprises forming the carbon black-particulate Teflon mix; fibrillating said mix along with a subst... | 06/29/1982 |
| 4337139 | Fluorinated carbon electrode This disclosure is directed to preparing deashed, precious metal catalyst-containing, partially fluorinated active carbon particles of the formula CFx, where x ranges from 0.1 to about 0.18, preferably using either platinum or silver as the cat... | 06/29/1982 |
| 4337126 | Electrolysis of carbonates to produce hydroxides The invention is directed to an electrolytic process for converting alkali metal carbonates to alkali metal hydroxides at high current efficiencies.... | 06/29/1982 |
| 4298697 | Method of making sheet or shaped cation exchange membrane Normally solid copolymers of a fluorinated vinyl monomer and a perfluorinated vinyl compound having a carboxyl and/or sulfonyl group attached directly to the perfluorinated vinyl group or indirectly through an alkyl or ether linkage have been found to be ... | 11/03/1981 |
| 4297194 | Electrolytic production of high purity alkali metal hydroxide Concentrated alkali metal hydroxide substantially free of alkali metal halide and other impurities is produced by the electrolysis of an alkali metal halide solution in an electrolytic cell having a dimensionally stable anode and a metal cathode separated... | 10/27/1981 |
| 4285799 | Electrodes for electrolytic processes, especially metal electrowinning PCT No. PCT/EP79/00020 Sec. 371 Date Nov. 28, 1979 Sec. 102(e) Date Nov. 26, 2979 PCT Filed Mar. 27, 1979 PCT Pub. No. WO79/00840 PCT Pub. Date Oct. 18, 1979 An electrode for electrolytic processes such as the recovery of uranium dioxide from seawater com... | 08/25/1981 |
| 4274929 | Chemical removal of silicon from waste brine stream for chlor-alkali cell Reduction of silicate levels in alkali metal choride containing industrial waste streams to less than 20 ppm provides waste brine streams suitable for use in the electrolytic production of chlorine and alkali metal hydroxide.... | 06/23/1981 |
| 4272560 | Method of depositing cation exchange membrane on a foraminous cathode Normally solid copolymers of a fluorinated vinyl monomer and a perfluorinated vinyl compound having a carboxyl and/or sulfonyl group attached directly to the perfluorinated vinyl group or indirectly through an alkyl or ether linkage have been found to be ... | 06/09/1981 |
| 4272354 | Electrodes for electrolytic processes Electrodes for electrolytic processes comprise an electrically-conductive and corrosion-resistant substrate, having a coating thereon which contains a solid solution of tin dioxide and bismuth trioxide, preferably in a ratio of 9:1 to 4:1 by weight of the... | 06/09/1981 |
| 4270995 | Electrochemical cell and process An electrochemical cell comprises a housing (1,2) divided by a perforated generally horizontal plate (3) into an upper chamber (4) and a lower chamber (5). Bipolar electrodes (19, 21) are disposed in the upper chamber (4) above perforations (23) in the pl... | 06/02/1981 |
| 4267025 | Electrodes for electrolytic processes, especially perchlorate production An electrode especially for the production of chlorates and perchlorates comprising an electrically-conductive corrosion-resistant substrate having an electrocatalytic coating which is preferably a mixture of 40 to 85 parts by weight of platinum, 0 to 20 ... | 05/12/1981 |
| 4266036 | Recovery of polymeric cation exchange materials for reuse by converting by reaction to the precursor form Normally solid copolymers of a fluorinated vinyl monomer and a perfluorinated vinyl compound having a carboxyl and/or sulfonyl group attached directly to the perfluorinated vinyl group or indirectly through an alkyl or ether linkage have been found to be ... | 05/05/1981 |
| 4256556 | Anodically polarized surface for biofouling and scale control Biofouling and scale control in conductive aqueous systems is effected on metal, preferably valve metal such as titanium, surfaces on which such fouling normally occurs by applying thereto a stable electrocatalytic coating, anodically polarizing said valv... | 03/17/1981 |
| 4244802 | Monopolar membrane cell having metal laminate cell body Disclosed is a monopolar membrane cell in which identical anode and cathode pans are stamped from bimetallic laminate material in which an electrolyte resistant material is utilized on the inside of the electrolytic cell and a highly conductive metal is u... | 01/13/1981 |
| 4235697 | Oxygen selective anode Novel oxygen selective electrode comprising a coating on said anode consisting of delta manganese dioxide. This outer coating on the anode may be placed on the anode electrochemically by electrolyzing an acid saline solution having dissolved therein suffi... | 11/25/1980 |
| 4234401 | Method for recovery and use of zinc from a leach solution This invention relates to the art of electrowinning and, more particularly, to a process for recovering zinc which is leached from an alloy coating of nickel and zinc which has previously been deposited on cathodes of an electrolytic cell used in the elec... | 11/18/1980 |
| 4221644 | Air-depolarized chlor-alkali cell operation methods Disclosed are methods of operation for oxygen electrodes which maximize the power efficiency available from such oxygen electrodes while minimizing the voltage necessary to operate such oxygen electrodes. These methods include control of the pressure of t... | 09/09/1980 |
