Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7387731 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 06/17/2008 |
| 7335301 | Fold protection for spiral filtration modules utilizing UV cured adhesive and method of providing same The present invention encompasses a leaf packet useful in forming a spiral filtration module, wherein the fold area of the leaf packet is reinforced with a UV cured adhesive. The invention further encompasses a spiral filtration module wherein the fold line, side se... | 02/26/2008 |
| 7311830 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 12/25/2007 |
| 7070721 | Method of making and using a hollow fiber microfiltration membrane A hollow fiber microfiltration (MF) membrane is provided. The casting solution used to make this membrane includes a fiber-forming polymer having a degree of polymerization greater than about 1000, a water-soluble polymer, an anhydride with about 2 to 12 carbon atom... | 07/04/2006 |
| 7063789 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 06/20/2006 |
| 6890435 | Hollow fiber microfiltration membranes and a method of making these membranes A hollow fiber microfiltration (MF) membrane is provided. The casting solution used to make this membrane includes a fiber-forming polymer having a degree of polymerization greater than about 1000, a water-soluble polymer, an anhydride with about 2 to 12 carbon atom... | 05/10/2005 |
| 6596167 | Hydrophilic hollow fiber ultrafiltration membranes that include a hydrophobic polymer and a method of making these membranes A hydrophilic membrane that includes a hydrophobic polymer and a water-soluble polymer-metal complex is provided. This membrane is made by heating a mixture of a hydrophobic polymer, a metal compound, and a water-soluble polymer. The water-soluble polymer... | 07/22/2003 |
| 6536605 | High performance composite membrane High quality reverse osmosis, nanofiltration, and ultrafiltration membranes are produced by a high speed process wherein the membranes which have excellent rejection characteristics coupled with high flux capabilities. The process employs tandem coating t... | 03/25/2003 |
| 6132804 | High performance composite membrane A process for producing high quality reverse osmosis, nanofiltration, and ultrafiltration membranes in a high speed process provides membranes which have excellent rejection characteristics coupled with high flux capabilities. The process employs tandem c... | 10/17/2000 |
| 6074718 | Self supporting hollow fiber membrane and method of construction A method for constructing a polyvinylidene fluoride based hollow fiber membrane from a polymer mixture using temperatures not greater than 80° C., the mixture comprising polyvinylidene fluoride, a pore forming agent, and a solvent. The mixture can also c... | 06/13/2000 |
| 6068771 | Method for sealing spiral wound filtration modules A method for preparing a spiral wound filtration module is provided. The module has a central permeate carrier tube. The method includes winding at least one filtration leaf about the permeate carrier tube. The filtration leaf includes a first membrane sh... | 05/30/2000 |
| 5868976 | Process of making a dialysis membrane A process for forming a dialysis membrane utilizing a mixture of ion exchange resin components and thermoplastic resin components mixed together in a dry state and rotationally formed into a membrane. The rotational forming process includes rotational mol... | 02/09/1999 |
| 5507929 | Submergible electrode apparatus for dialysis An electrode apparatus for dialysis of a liquid during electrodeposition processes includes an elongated body submergible in the liquid and having a generally open interior for receiving an elongated electrode therein. An ion exchange membrane forms a por... | 04/16/1996 |
| 5470468 | Spiral filtration module having bypass prevention flange A membrane filtration module is provided incorporating a seal assembly to seal the annular space or bypass channel existing between the outer diameter of the filtration cartridge and the inner diameter of the housing in which it is disposed. The seal asse... | 11/28/1995 |
| 5418053 | Membrane from epoxy-direct grafted halogenated vinyl polymer A membrane useful as an ultrafiltration or reverse osmosis membrane is formed from the casting onto a substrate such as a porous polyester sheet a material comprising an epoxy- or trimethylene ether-direct grafted halogenated vinyl polymer prepared by the... | 05/23/1995 |
| 5350805 | Epoxide-direct grafted halogenated vinyl polymers An epoxy or trimethylene ether-direct grafted halogeneated vinyl polymer is prepared by the reaction of an epoxide such as a 5-ethyl, 5'-methyl-hydantoin/epichlorogydrin condensation product with a halogenated vinyl polymer such as polyvinylidene fluoride... | 09/27/1994 |
| 5279739 | Durable filtration membrane having optimized molecular weight The subject of this invention is a novel polymeric composition useful in membrane technology such as microfiltration, nanofiltration, ultrafiltration, reverse osmosis and gas separation. The composition is formed by taking a known condensation polymer suc... | 01/18/1994 |
| 5192437 | Spiral filtration module with improved cleanability and operating efficiency A cleanable ultrafiltration device and method of making same is the subject of the present invention. The device comprises a housing for receiving a feed stream of a liquid to be filtered and a membrane cartridge disposed in the housing for separating the... | 03/09/1993 |
| 5147541 | Spiral filtration module with strengthened membrane leaves and method of constructing same The subject of the present invention is an improved leaf packet useful in forming a spiral filtration module, the improved module which results from utilization of the leaf packet and a method of preparing the leaf packet. The membrane sheet utilized in f... | 09/15/1992 |
| 4992177 | Tubular filtration module and system with flow distributor and improved method of separation A tubular membrane module system and method which comprise a plurality of UF modules connected in series by U-bends with an end fitting to the modules whose cross sectional flow area is substantially equal to the cross sectional flow area of the U-bends a... | 02/12/1991 |
| 4988445 | Spiral wound filtration system and method of utilizing same A filtration system and method constitute the subject matter of the present invention. The system comprises first and second filtration stages which are joined in series with each stage comprising a plurality of filtration modules range for parallel flow.... | 01/29/1991 |
| 4849106 | Positive-charged ultrafiltration membrane for the separation of cathodic electrodeposition paint compositions Method for preparing a fouling-resistant polymer membrane for use in the separation of aqueous, cathodic, electrode-position-paint compositions, which method comprises treating a negative-charged polymer membrane material, having fixed negative-charged gr... | 07/18/1989 |
| 4792401 | Spiral wound membrane module and method of manufacture and use A spirally wound, high flux membrane module which comprises a feed inlet, a concentration outlet and two permeate outlets and one or more membrane leaves wrapped about a central permeate flow tube to define a permeate flow path in one or more of the membr... | 12/20/1988 |
