Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5605632 | Silver recovery device and process A silver recovery device (30) is described for removing silver from a silver-containing solution. The device (30) comprises an ion-exchange resin bed (34) and a pump (62) for directing the solution through the resin bed (34). The pump (62) is positioned d... | 02/25/1997 |
| 5602071 | Bead for removing dissolved metal contaminants A bead is provided which consists essentially of peat moss immobilized by crosslinked neutralized poly(carboxylic acid) binder, sodium silicate binder, or polysulfone binder. The bead is effective to remove metal contaminants from dilute aqueous solutions... | 02/11/1997 |
| 5601721 | Method for reducing the selenium concentration in an oil refinery effluent Selenium exists in oil refinery stripped sour water as selenocyanate and can be effectively removed using an acrylic, strong base, anion exchange column or stannous chloride. The acrylic, strong base, anion exchange column can also be employed to remove a... | 02/11/1997 |
| 5599457 | Machine coolant treatment method A filtering apparatus and filtering method for removing free-oils, particulate matter and dissolved heavy metals from a machine coolant by withdrawing a portion of the machine coolant from a machine coolant reservoir through a skimmer assembly and thereaf... | 02/04/1997 |
| 5599456 | Fluid treatment utilizing a reticulated foam structured media consisting of metal particles A method for treating a fluid or gas containing contaminants wherein the fluid or gas is passed through a contactor having at least one reticulated foam structured fluid treatment element formed from metal particles bound together in an interconnected for... | 02/04/1997 |
| 5599455 | Detergent-free washing water, method and apparatus for making the washing water, and water/oil separation method for separating matters emulsified with the washing water into water and oil phases Washing water containing hydroxyl ions (H3 O2-) and hydronium ions (H3 O2-) is prepared by connecting soft water generators (10), (12) each having an ion exchange resin (32), and an ion gen... | 02/04/1997 |
| 5597489 | Method for removing contaminants from water Contaminants in ground water, waste water and industrial effluents are removed using a contaminant removing media packed in a radial flow column. The radial flow column includes a fluid chamber having cylindrical inner and outer screens positioned therein... | 01/28/1997 |
| 5595666 | Removal of radioactive materials and heavy metals from water using magnetic resin Magnetic polymer resins capable of efficient removal of actinides and heavy metals from contaminated water are disclosed together with methods for making, using, and regenerating them. The resins comprise polyamine-epichlorohydrin resin beads with ferrite... | 01/21/1997 |
| 5582737 | Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions An ion exchange separation, recovery and regeneration process for the control of iron has been developed to replace the conventional bleed stream process used in copper electrowinning. The process minimizes the loss of cobalt from the electrowinning circu... | 12/10/1996 |
| 5578217 | Use a solvent impregnated crosslinked matrix for metal recovery A composition comprising a crosslinked, highly porous body derived from a water-soluble hydrogel polymer, said porous body being characterized in that it has an open-celled three-dimensional lattice structure, a density of less than about 1.0 g/cm3 | 11/26/1996 |
| 5575915 | Methods of removing silver A method of removing silver from a solution containing silver halide and silver ion is described, which comprises a step of adding an a sulfur atom-containing hydrophilic polymer chelating agent to the solution.... | 11/19/1996 |
| 5571657 | Modified cation exhange process The invention is a process of removing metal ion contaminants from an organic solution, especially one having acid labile components. The process comprises modifying a cationic exchange resin by treatment with ammonia or amine and contacting said modified... | 11/05/1996 |
| 5571420 | Cooling system change over apparatus and process A change-over apparatus for use in conjunction with a cooling system of an internal combustion engine having an engine and radiator and having an upper hose between the radiator and the engine which has been cut to form an upper radiator hose section and ... | 11/05/1996 |
| 5567451 | Alginate or pectate gel deficient in gelling ions for use in binding metal ions An ionically gellable material is gelled with a metal cation and the metal cation content of the gel is reduced to provide the gel with binding sites not occupied by the metal cation so the gel can be used to bind and remove metal cations from solution. I... | 10/22/1996 |
| 5556548 | Process for contaminated oil reclamation A novel process and related apparatus for removing common contaminants from used motor oil. Propane, butane or similar solvent is mixed with the contaminated oil to form a solution. This solution is agitated and then given time to settle thus allowing gra... | 09/17/1996 |
| 5554294 | Method for dissolving sludge and recovering constituents therefrom The present invention provides a method for dissolving slightly soluble sludge which is produced during chemical conversion coating of metal, which comprises agitating the sludge in an aqueous suspension containing hydrogen type strongly acidic cation exc... | 09/10/1996 |
| 5552058 | Cooling tower water treatment method A filtering method for removing particulate matter and dissolved heavy metals from cooling tower water by passing the cooling tower water through a filter assembly containing a particulate matter filter and a heavy metals filter having a filter element ha... | 09/03/1996 |
| 5540843 | Method for preferential retention of cesium cations and their separation from other inorganic cations A method of preferential removal of cesium cations from aqueous solutions containing other inorganic cations. Deltahaedral heteroborane anions are added to the solution to form a salt with the cesium cations which then precipitates from the solution. The ... | 07/30/1996 |
| 5538645 | Process for the removal of species containing metallic ions from effluents A process for the removal of species containing metallic ions from effluents by yeast cell walls. The yeasts used are selected from Saccharomyces cerevisae, Saccharomyces uvarum and Saccharomyces lipolytica. According to the process, the washed yeast cell... | 07/23/1996 |
| 5538644 | Apparatus and method for maintaining a stable bath for an autodeposition composition by periodically separating particular metal ions from the composition An apparatus and method is provided for automated periodic removal of metal ions and contaminants from a chemical bath comprising a latex solution containing charged latex particles and having an acidic pH, used for forming a coating by autodeposition. Th... | 07/23/1996 |
| 5534153 | Continuous fluidized-bed contactor with recycle of sorbent A continuous fluidized-bed contactor containing sorbent particles is used to remove solutes from liquid solvents. As the sorbent particles, for example gel beads, sorb the solute, for example metal ion species, the sorbent particles tend to decrease in di... | 07/09/1996 |
| 5525315 | Process for removing heavy metal ions with a chelating cation exchange resin The invention is for a process of removal of dissolved heavy metal cation contaminants from an organic solution. The process of the invention involves providing a chelating ion exchange resin modified by removal of sodium ions therefrom and contacting sai... | 06/11/1996 |
| 5521052 | Metal ion reduction in novolak resin using an ion exchange catalyst in a polar solvent and photoresists compositions therefrom The present invention provides methods for producing water insoluble, aqueous alkali soluble, film forming novolak resins having an extremely low level of metal ions, utilizing treated anion and cation exchange resins. A method is also provided for produc... | 05/28/1996 |
| 5510036 | Process for treatment of aqueous solutions of polyhydric alcohols The process relates to the treatment of aqueous solutions of polyhydric alcohols to remove heavy metal components, oils, organic contaminants and, optionally, water. The process is particularly well suited for use in the treatment of spent antifreeze/cool... | 04/23/1996 |
| 5510034 | Method for treating fluids A fluid treating method for treating fluid to reduce the concentration of undesirable metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the ... | 04/23/1996 |
| 5500126 | Process for removal of metal ions from aqueous solutions An improved process for removal of metal ions from aqueous solutions is disclosed. Removal of metal ions from aqueous solution, particularly from metal plating waste streams, is achieved by the combined use of polyamines, at levels less than the stoichiom... | 03/19/1996 |
| 5491048 | Removal of tin from seasoned photographic color developers A process for removing tin from seasoned photographic color developers containing tin as stannous or stannate complex ions, comprising the steps of: (a) collecting seasoned photographic color developer containing tin; (b) treating the collected developer with ... | 02/13/1996 |
| 5484533 | Method for the stabilization and detoxification of waste material A process for the treatment of waste material. The process includes the steps of combining the waste material with a treatment composition to form crystal growth structures and adsorb the waste material within the crystal growth structures thereby stabili... | 01/16/1996 |
| 5476750 | Metal ion reduction in the raw materials and using a Lewis base to control molecular weight of novolak resin to be used in positive photoresists The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having a very low level of metal ions and a substantially consistent molecular weight. A method is also provided for producing photoresist composit... | 12/19/1995 |
| 5466297 | Process for removal of primarily iron oxide deposits A method is described for removing ferrometal corrosion products from cooling water systems, which method recycles ferrous/ferric complexing agents and leads to low volume highly concentrated iron wastes for disposal. The method combines, preferably, the ... | 11/14/1995 |
| 5460791 | Method for adsorbing and separating heavy metal elements by using a tannin adsorbent and method of regenerating the adsorbent A method of adsorbing and separating a heavy metal element by using a tannin adsorbent comprising: (a) adjusting the pH of a solution containing a plurality of heavy metal elements to a predetermined pH; (b) contacting the adsorbent with the solution in which ... | 10/24/1995 |
| 5451323 | Method for recovering and reproducing tinning liquid A method of recovering and reproducing a tinning liquid containing Fe ions and other detrimental cations by the steps of removing cations from the tinning liquid by passing the tinning liquid or a diluted liquid of the tinning liquid through a strong-acid... | 09/19/1995 |
| 5449462 | Phosphonic acid based exchange resins An ion exchange resin for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene.... | 09/12/1995 |
| 5443729 | Method for removing manganese from water A process for removal of manganese from water which includes the steps of (i) preparing a fluidized bed of particles (eg. magnetite) in a bioreactor capable of adsorbing a strongly adherent biofilm of microorganisms (e.g. pedomicrobium manganicum) metabol... | 08/22/1995 |
| 5443736 | Purification process The invention is for a process of removing organic contaminants and multivalent metal ions from solution. The process comprises chelating multivalent metal ions in an organic solution to be purified and contacting the solution with activated carbon. The p... | 08/22/1995 |
| 5441689 | Process of making regenerated cellulose articles Aqueous solutions of an amine N-oxide such as N-methyl morpholine N-oxide used in the manufacture of regenerated cellulose can be purified by passage through a strongly basic anion-exchange resin. The resin is regenerated by treatment with (1) an aqueous ... | 08/15/1995 |
| 5437797 | Mercury removal from waste water Method for removal of organic and inorganic mercury contaminants from a biological vaccine production facility.... | 08/01/1995 |
| 5434331 | Removal of radioactive or heavy metal contaminants by means of non-persistent complexing agents A process for the decontamination of solid surfaces contaminated with radioactive or heavy metal species using a solution based on one or more non-persistent complexing agents, or for the chemical cleaning of steam generator sludge using such a solution, ... | 07/18/1995 |
| 5422008 | Reinhibition of recycled antifreeze/coolant The process relates to the reinhibition of recycled antifreeze/coolant. The process is particularly well suited for use with recycled, used antifreeze/coolant from the cooling systems of internal combustion engines.... | 06/06/1995 |
| 5419834 | Precipitating agent for the precipitation of heavy metals A precipitating agent containing thioacetamide is described for the precipitating of heavy metals from flue gases and waste waters, it containing thioacetamide (C2 H5 SN) in a 1-20% aqueous solution, which, in addition, contains a bu... | 05/30/1995 |
