Patents Represented by Attorney, Agent or Law Firm Amelia A. Buharin
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Patent number: 6342324Abstract: Release compositions include (a) from zero to about 30 parts by weight of a polymer selected from the group consisting of wherein R1, R2, R3, R6, R7, R10, R11, and R12 are each independently selected from an alkyl group, an alkenyl group, an aryl group, and an aralkyl group, such that at least one of R6 and R7 is an alkenyl group, l, m, and n are each independently an integer so long as the polymer contains greater than 3 mol % vinyl-containing siloxane groups; a (vinyl siloxy)(siloxy)-modified silica having a vinyl content of at least about 0.Type: GrantFiled: February 16, 2000Date of Patent: January 29, 2002Assignee: Imation Corp.Inventors: Minyu Li, M. Zaki Ali, Eric D. Morrison, Charles W. Simpson, Leonard J. Stulc, Ramnath Subramaniam, Jiayi Zhu
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Patent number: 6340548Abstract: Organic photoreceptors that include a charge transport compound, a charge generating compound, and an electroconductive support in which the charge transport compound is a novel aryl hydrazone-functional carbazole compound.Type: GrantFiled: March 16, 2000Date of Patent: January 22, 2002Assignee: Imation Corp.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Terrance P. Smith
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Patent number: 6291143Abstract: A laser addressable thermal imaging element comprising a bleachable photothermal converting dye in association with a heat-sensitive imaging medium, and a photoreducing agent for said dye, said photoreducing agent bleaching said dye on laser address of the element. The imaging element may be in the form of a colorant transfer system, a peel-apart system, a phototackification system or a unimolecular thermal fragmentation system. Also provided is a method of crosslinking a resin by laser irradiation, which is useful in the production of colored images.Type: GrantFiled: October 16, 2000Date of Patent: September 18, 2001Assignee: Imation Corp.Inventors: Ranjan C. Patel, Robert J. D. Nairne, Andrew W. Mott, Mark R. I. Chambers, Dian E. Stevenson
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Patent number: 6274227Abstract: A magnetic recording medium comprising a nonmagnetic substrate, a liquid lubricant-containing coating layer having a porosity (U) formed on the substrate, and a magnetic layer having a porosity (M) formed directly on the coating layer. The ratio of porosity (U/M) between the coating and magnetic layers is between 0.75 and 1.25. The volume percentage of the lubricant contained in the pores of the coating layer based on the whole pore volume in the coating layer is from 35 to 85%. This improves the durability of the magnetic layer.Type: GrantFiled: September 24, 1999Date of Patent: August 14, 2001Assignee: Imation Corp.Inventors: Shigeto Oiri, Yoji Tsukamoto, Hideaki Yasui
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Patent number: 6265060Abstract: A magnetic recording medium, comprising a magnetic layer provided on a nonmagnetizable substrate, wherein the magnetic layer comprises a magnetic pigment dispersed in a polymeric binder, the polymeric binder comprising a resin, wherein the resin comprises a nonchlorinated fluorine-containing vinyl copolymer having pendant nitrile groups, pendant hydroxyl groups, and pendant fluorine-containing groups.Type: GrantFiled: March 15, 1995Date of Patent: July 24, 2001Assignee: Imation Corp.Inventors: Ravindra L. Arudi, Ramesh C. Kumar
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Patent number: 6262421Abstract: A solid state radiation detector for medical imaging incorporates an array of transistors and a continuous radiation detecting layer positioned over the transistors and electrically coupled to the transistors. The transistors may reside on a plurality of tiles, with the continuous radiation detecting layer being disposed over the tiles.Type: GrantFiled: April 18, 2000Date of Patent: July 17, 2001Assignee: Imation Corp.Inventor: Nang Tri Tran
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Patent number: 6256904Abstract: A system, such as a gap drying system, moves a substrate having a substrate tension over a curved plate at a substrate speed such that the substrate floats over at least a region of substantially constant clearance (H0) between the substrate and the curved plate. H0 is controlled without adjusting the substrate speed and without adjusting the substrate tension.Type: GrantFiled: May 6, 1998Date of Patent: July 10, 2001Assignee: Imation Corp.Inventors: William Blake Kolb, Marcio da Silveira Carvalho, Gary Lee Huelsman
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Patent number: 6214503Abstract: The invention features organic photoreceptors that include a charge transport compound having the formula: where X is an N-alkyl-substituted carbazole, an N-aryl-substituted carbazole, or a p-(N,N-disubstituted)arylamine; Ar is a group having the formula: R1 is a hydrogen, halogen, or alkyl group; R is a hydrogen, halogen, OH, CN, OR2, or OCOR3 group; R2 is an alkyl, aryl, or alkaryl group; R3 is a hydrogen, alkyl, aryl, or haloalkyl group; n is 0 or 1; A is a group having the formula: Z is O or S; Q is O, S, or CH2; and m is 0 or 1.Type: GrantFiled: December 21, 1999Date of Patent: April 10, 2001Assignee: Imation Corp.Inventors: Valentas Gaidelis, Janina Gavutiene, Vytautas Getautis, Juozas Vidas Grazulevicius, Vygintas Jankauskas, Rimtautas Kavaliunas, Ruta Lazauskaite, Osvaldas Paliulis, Mitchell A. Rossman, Donatas Jonas Sidaravicius, Terrance P. Smith, Albina Stanishauskaite
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Patent number: 6180305Abstract: An organic photoreceptor (“OPR”) including a barrier layer formed from a barrier layer coating composition including a cellulosic resin, methylvinyl ether/maleic anhydride copolymer, a polyamide, a crosslinker, and a combination thereof, provides sufficient protection to the organic photoreceptor from damage due to corona-induced charge injection; is substantially inert with respect to the organic photoconductive layer; exhibits sufficient resiliency to withstand shear, compressional and tensional forces exerted on the belt as it passes through an electrophotographic system when the photoreceptor is used in an endless belt form; and provides sufficient protection to limit or prevent a liquid toner from contacting the organic photoconductor that may result in crazing and/or cracking of the organic photoreceptor during use.Type: GrantFiled: February 16, 2000Date of Patent: January 30, 2001Assignee: Imation Corp.Inventors: James H. Ackley, James E. Lindquist, Zbigniew Tokarski
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Patent number: 6139946Abstract: Surface treatment agents incorporating both acidic functionality and electron withdrawing functionality are extremely effective for promoting compatibility of magnetic pigments with binder systems incorporating quaternary ammonium functionality. Such surface treatment agents are particularly effective in combination with binder systems incorporating quaternary ammonium functional, nonhalogenated vinyl copolymers such as are described in U.S. Pat. No. 5,510,187.Type: GrantFiled: May 30, 1997Date of Patent: October 31, 2000Assignee: Imation Corp.Inventors: Joseph K. Bailey, John S. Roden
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Patent number: 6139982Abstract: A magnetic recording medium comprising a magnetic layer provided upon a major surface of a substrate, wherein the magnetic layer includes a magnetic pigment, and a polymeric binder system containing a polyurethane having (1) a plurality of pendant phosphonate ester groups effective for promoting wetting of the magnetic pigment by the polymeric binder system, and (2) at least one quaternary ammonium group effective for promoting wetting of the magnetic pigment by the polymeric binder system.Type: GrantFiled: November 6, 1998Date of Patent: October 31, 2000Assignee: Imation Corp.Inventors: William E. Bottomley, Philip I. Mayo, Ruth M. Erkkila
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Patent number: 6140004Abstract: An organic photoreceptor that includes:(a) a charge transport compound having the formula ##STR1## where n is an integer between 2 and 6, inclusive; R.sup.1 and R.sup.2, independently, are an alkyl group, a cycloalkyl group, or an aryl group, or R.sup.1 and R.sup.2 combine with the nitrogen atom to form a ring;Y is a bond, a carbon atom, a --CR.sup.3 group, an aryl group, a cycloalkyl group, or a cyclosiloxyl group;R.sup.3 is hydrogen, an alkyl group, or an aryl group; andX is a linking group having the formula --(CH.sub.2).sub.m -- wherein m is an integer between 4 and 10, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, or an ester group;(b) a charge generating compound; and(c) an electroconductive substrate.Type: GrantFiled: December 16, 1999Date of Patent: October 31, 2000Assignee: Imation Corp.Inventors: Andrew W. Mott, David J. Owen, Nusrallah Jubran, Martin D. Attwood, Richard A. Barcock, Richard J. Ellis, Rachel J. Hobson, David R. McGill
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Patent number: 6099895Abstract: The invention is a surface modifier for magnetic pigments having the formula:(Ar).sub.n --R--PO.sub.3 H.sub.2 (I)where Ar represents an aryl group, R represents an aliphatic group of 1-6 carbons and n is an integer of 1 or more. The invention also includes magnetic recording media made using such surface modifiers.Type: GrantFiled: November 6, 1998Date of Patent: August 8, 2000Assignee: Imation Corp.Inventors: Philip I. Mayo, Ian T. Morgan, Colin F. Norman, Robert J. D. Nairne
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Patent number: 6027810Abstract: The performance of phosphor screens can be improved by adding an antistatic agent into the protective topcoat of the radiographic screen when the antistatic agent preferably comprises a fluorocarbon or silicone antistatic agent. These antistatic agents are particularly useful where the screen is made by coating phosphor dispersion/mixture onto a substrate while the dispersion/mixture contains less than 5% by weight of polymerizable components with a molecular weight less than 300, preferably with less than 5% by weight of polymerizable components having molecular weights less than 500, and a topcoat contains the antistatic agent. Formation of the antistatic topcoat is preferably formed by inclusion of the antistatic agent into the polymerizable composition and allowing the antistatic agent to migrate to the surface of the composition during polymerization to form a layer consisting essentially of the antistatic agent.Type: GrantFiled: June 9, 1997Date of Patent: February 22, 2000Assignee: Minnesota Mining & ManufacturingInventors: John C. Dahlquist, Subodh K. Kulkarni
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Patent number: 5939339Abstract: The present invention relates to a wound dressing 10 that is a porous, self-adhering elastic 14 bandage which may be compressively wrapped around a wound and which is capable of absorbing fluids and wound exudate. A preferred embodiment of the wound dressing 10 is a self-adhering elastic substrate 14 which does not adhere to clothing, hair or skin having a compressive force when extended that provides a therapeutic benefit and which is flexibly attached or fixed to an absorbent layer 12.Type: GrantFiled: October 4, 1996Date of Patent: August 17, 1999Assignee: 3M Innovative Properties CompanyInventors: Michael D. Delmore, Scott A. Burton, Nicholas R. Baumann
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Patent number: 5914282Abstract: An adhesive sheet article comprising a porous backing coated on one side with a polymeric migration barrier and said migration barrier is further coated with a pressure-sensitive adhesive to provide novel adhesive tape articles. A method of manufacturing such articles is also disclosed.Type: GrantFiled: December 30, 1996Date of Patent: June 22, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Wayne K. Dunshee, Steven C. Stickels
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Patent number: 5605627Abstract: A dialysate filter including asymmetric, microporous, hollow fiber membranes incorporating a polyimide. The dialysate filter connects to the dialysis machine immediately before the dialyzer ensuring complete filtration of the dialysate, easy visual inspection, quick installation and removal, and easy disinfection of the filter.Type: GrantFiled: April 7, 1995Date of Patent: February 25, 1997Assignee: Minntech CorporationInventors: Daniel B. Carlsen, Robert G. Andrus, Robert T. Hall, II
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Patent number: 5589507Abstract: Provided is an anti-microbial composition containing an ester of formic acid, an oxidizer, performic acid and water. Also provided is a premix for making the anti-microbial composition having two parts. One part contains the ester of formic acid and a second part contains the oxidizer. Another method is provided for making the anti-microbial composition in which the ester of formic acid is combined with the oxidizer and water. Also provided is a method for sterilizing devices by contacting the surface of the device with the anti-microbial composition containing the ester of formic acid, an oxidizer, performic acid and water.Type: GrantFiled: November 17, 1995Date of Patent: December 31, 1996Assignee: Minntech CorporationInventors: Robert T. Hall, II, Bradley K. Onstad
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Patent number: 5554283Abstract: A unique hollow fiber filter cartridge that allows repeated autoclaving without any deleterious breaks in sealing integrity between the potted fiber bundle and the filter module is disclosed. The unique filter cartridge braodly includes a casing that has at least one open end with an inner lip in the casing proximal to the open end; and a porous collar that has first and second peripheral edges, at least one of which is coupled to the casing along the inner ledge.Type: GrantFiled: March 31, 1995Date of Patent: September 10, 1996Assignee: Minntech CorporationInventors: Paul D. Brinda, Louis C. Cosentino
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Patent number: 5543002Abstract: A method of sealingly coupling a hollow fiber bundle having first and seconds ends to a porous collar having first and second peripheral edges, at least one of which is coupled to the inner ledge of a casing for encasing said bundle of hollow fibers is disclosed.Type: GrantFiled: August 26, 1994Date of Patent: August 6, 1996Assignee: Minntech CorporationInventors: Paul D. Brinda, Louis C. Cosentino