| Patent application number | Description | Published |
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| 20090214610 | BENZOIC ACID CONTAINING COMPOSITION FOR MAINTAINING HYDANTOINYLATED POLYMERS IN A BIOCIDALLY ACTIVE STATE - A tablet includes benzoic acid and trichloroisocyanuric acid. The tablet provides free available chlorine in water to maintain an N-halamine-containing polymer biocidal, without rendering the water undrinkable from high chlorine content. The tablet may be used in a water purification device having a cartridge containing an N-halamine polymer to provide safe drinking water. | 08-27-2009 |
| 20090239907 | METHODS AND COMPOSITIONS FOR TREATING FISH DISEASES - Therapeutic and prophylactic treatments of aquatic species and aquatic diseases through the controlled introduction of a heterocyclic N-halamine into an aquatic habitat. | 09-24-2009 |
| 20110000854 | USE OF A DUAL POLYMER SYSTEM FOR ENHANCED WATER RECOVERY AND IMPROVED SEPARATION OF SUSPENDED SOLIDS AND OTHER SUBSTANCES FROM AN AQUEOUS MEDIA - A method uses anionic and cationic polymers added in, any order or simultaneously, to aqueous media for the removal of substances. The sequential addition of the two biopolymers, anionic xanthan, followed by cationic chitosan, causes the rapid formation of very large and cohesive fibrillar aggregates that may exhibit high solids to liquid ratios and that quickly settle out from the aqueous media. The aqueous media can be easily separated from the large fibrillar aggregates by settling under gravity or by filtration through a porous containment device, such as a synthetic or non-synthetic woven or non-woven fabric including a geotextile fabric or a solid containment device containing a solid mesh screen. | 01-06-2011 |
| 20110006013 | METHOD FOR THE REMOVAL OF SUBMICRON PARTICULATES FROM CHLORINATED WATER BY SEQUENTIALLY ADDING A CATIONIC POLYMER FOLLOWED BY ADDING AN ANIONIC POLYMER - A method for removing submicron colloidal particulates, such as hydrocarbons, from water. The method includes first adding a soluble, cationic polymer, such as chitosan, a salt, or solution of chitosan to water containing the submicron particulates and a halogenating agent, followed by adding a soluble, anionic polymer or anionic salt to the water. The resulting flocs are filtered to remove the submicron particulates. | 01-13-2011 |
| Patent application number | Description | Published |
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| 20090100813 | Air cleaner arrangements; components; and, methods - An air cleaner assembly and components therefor are described. The components include features of an air cleaner housing; advantageous main filter cartridges; and, advantageous safety filter cartridge features. Features of the main filter cartridge are provided to engage an access cover of the assembly, and a cartridge support within the housing, in a preferred manner. Methods of assembly and use are also described. | 04-23-2009 |
| 20090249756 | Air cleaner; air filter cartridge and method of manufacturing - According to the present disclosure an air cleaner and air filter cartridge arrangement is provided. The air filter cartridge is a removable and replaceable cartridge for use in the air cleaner. The cartridge includes, among other things, an end cap having a preferred outwardly directed radial seal and a groove. The air cleaner includes a housing with a stabilizing ring projecting into an interior, positioned to project at least partially into the groove of the filter cartridge, when the filter cartridge is mounted for use. Methods of assembly and installation are described. | 10-08-2009 |
| 20100126131 | Air cleaner; replaceable filter cartridges; and, methods - The disclosure concern air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. An optional mechanical interlock, operated with a non-threaded, movement of the cartridge, is provided between the primary filter cartridge and the housing. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary filter cartridge is shown. Preferred methods of assembly and use are provided. | 05-27-2010 |
| 20100146920 | AIR CLEANER; AIR FILTER CARTRIDGE AND METHOD OF MANUFACTURING - According to the present disclosure an air cleaner and air filter cartridge arrangement is provided. The air filter cartridge is a removable and replaceable cartridge for use in the air cleaner. The cartridge includes, among other things, an end cap having a preferred outwardly directed radial seal and a groove. The air cleaner includes a housing with a ring projecting into an interior, positioned to project against an end of the filter cartridge, when the filter cartridge is mounted for use. Methods of assembly and installation are described. | 06-17-2010 |
