Patents Represented by Attorney, Agent or Law Firm David T. Banchik
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Patent number: 6743763Abstract: Stable aqueous laundry detergents containing vinly pyrrolidone copolymers are provided. The stable aqueous laundry detergents contain, in addition to the vinyl pyrrolidone copolymers, a combination of anionic and nonionic surfactants.Type: GrantFiled: September 5, 2000Date of Patent: June 1, 2004Assignee: BASF CorporationInventors: Sridhar Gopalkrishnan, Kathleen M. Guiney
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Patent number: 6440919Abstract: The present invention relates to an aqueous based, solvent free degreaser composition, comprising a blend of two nonionic surfactants selected from, alcohol alkoxylate with a fatty alcohol moiety alkoxlyate, fatty alkoxlyated alcohol, fatty alcohol having oxyethylate moieties, polyoxyalkylene block copolymers, and alkyl phenol alkoxylate.Type: GrantFiled: June 26, 2000Date of Patent: August 27, 2002Assignee: BASF CorporationInventors: Charles O. Kerobo, Michael C. Welch, Suzanne M. Gessner, Sonia J. Patterson
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Patent number: 6417425Abstract: Absorbent articles and processes for making absorbent articles are provided. The process includes spraying onto a fibrous web a blend containing superabsorbent polymer particles, superabsorbent forming monomer, initiator and water, and subjecting the web to polymerization conditions. The resulting web is useful as an absorbent article particularly in disposable hygiene products.Type: GrantFiled: February 1, 2000Date of Patent: July 9, 2002Assignee: BASF CorporationInventors: Darryl L. Whitmore, Fritz Engelhardt
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Patent number: 6348133Abstract: A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion sensitive SAP having a particle size of less than 200 microns, wood pulp fibers and cellulose acetate fibers, each in preferred specified amounts indicated herein. The superabsorbent, ion sensitive polymer particle-impregnated fibrous structure is made from an aqueous, wet-lay process in which an aqueous furnish comprises solids of fibers and superabsorbent, ion sensitive polymer and dissolved salt, such as preferably, Na2SO4. The furnish is passed over a moving foraminous support, such as a Fourdrinier wire, and a wet web structure is formed, followed by drying.Type: GrantFiled: August 3, 2001Date of Patent: February 19, 2002Assignee: BASF CorporationInventor: G. Thomas Woodrum
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Patent number: 6342206Abstract: There is provided according to the present invention an aqueous gel composition, comprising a) an ethoxylated polyhydric alcohol which comprises a reaction product of an alcohol having 3 to 6 hydroxy groups with ethylene oxide; and b) a gelling agent selected from the group consisting of a polyoxyethylene/polyoxypropylene/polyoxyethylene triblock surfactant having a molecular weight of from 4,000 to 16,000, and wherein the weight of the polyoxyethylene blocks is from 55% to 90% of the weight of the triblock surfactant; a crosslinked polyacrylic thickener; cellulose derivatives; hydrated silicas; and mixtures thereof. When the gelling agent is the triblock surfactants, the ethoxylated polyhydric alcohol comprises the reaction product of the polyhydric alcohol and up to 5 mole equivalents of ethylene oxide per mole equivalent of hydroxyl group in the alcohol.Type: GrantFiled: December 27, 1999Date of Patent: January 29, 2002Inventors: Sridhar Gopalkrishnan, Richard J. Holland, James S. Dailey, Kathleen M. Guiney
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Patent number: 6342474Abstract: There is provided an aqueous hard surface cleaning composition comprising a) a water soluble organic solvent; b) a nonionic surfactant selected from the group consisting of an alcohol alkoxylate, an alcohol block alkoxylate, a polyxyethylene polyoxypropylene block surfactant, and mixtures thereof; and c) an effective amount up to about 5% by weight of a cleaning auxiliary selected from the group consisting of methylglycine diacetic acid, hydroxyethyl ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, ethylenediamine tetraacetic acid, nitilotriacetic acid, salts thereof, and mixtures thereof; and d) optionally, a thickening agent. The compositions are useful for cleaning hard surfaces with a minimum of wiping and scrubbing.Type: GrantFiled: December 17, 1999Date of Patent: January 29, 2002Assignee: BASF CorporationInventors: Charles O. Kerobo, Richard J. Holland, Michael C. Welch, Suzanne M. Gessner, Sonia J. Patterson
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Patent number: 6335001Abstract: There is provided a stable non-aqueous carrier for personal care compositions comprising: a) 80-98% by weight of a liquid polyoxyalkylene compound comprising a reaction product of an alcohol having 3 to 6 hydroxyl groups and ethylene oxide; and b) 2-20% by weight of a solid nonionic polyoxyalkylene compound selected from the group consisting of: i) solid nonionic triblock surfactants comprising an inner polyoxypropylene block and two outer polyoxyethylene blocks, wherein the number average molecular weight of the polyoxypropylene block is from about 2000 to about 2900, and the polyoxyethylene content is about 70 to 80 weight percent, based on the total molecular weight of the triblock surfactant; ii) solid polyethylene oxide having a number average molecular weight of greater than about 2000; and iii) mixtures thereof. There are also provided dentifrice compositions comprising the stable non-aqueous carrier.Type: GrantFiled: December 27, 1999Date of Patent: January 1, 2002Assignee: BASF CorporationInventors: Sridhar Palkrishnan, Kathleen M. Guiney
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Patent number: 6290813Abstract: A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion sensitive SAP having a particle size of less than 200 microns, wood pulp fibers and cellulose acetate fibers, each in preferred specified amounts indicated herein. The superabsorbent, ion sensitive polymer particle-impregnated fibrous structure is made from an aqueous, wet-lay process in which an aqueous furnish comprises solids of fibers and superabsorbent, ion sensitive polymer and dissolved salt, such as preferably, Na2SO4. The furnish is passed over a moving foraminous support, such as a Fourdrinier wire, and a wet web structure is formed, followed by drying.Type: GrantFiled: October 8, 1999Date of Patent: September 18, 2001Assignee: BASF CorporationInventor: G. Thomas Woodrum
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Patent number: 6271191Abstract: There is provided a hard surface cleaning composition comprising: (a) a water soluble organic solvent; (b) an anionic surfactant which comprises the reaction product of maleic acid, fumaric acid, itaconic acid, or a mixture thereof and at least one selected poly(oxyalkylated) polyol or epoxy-capped poly(oxyalkylated) polyol in the presence of a peroxy-type free radical initiator to form a carboxylic group containing addition product,; and (c) a third component comprising a chelating agent or a nonionic surfactant selected from the group consisting of alcohol alkoxylates, alcohol block alkoxylates, polyoxyethylene polyoxypropylene block surfactants, and mixtures thereof.Type: GrantFiled: June 30, 1999Date of Patent: August 7, 2001Assignee: BASF CorporationInventors: Charles O. Kerobo, Richard J. Holland, Michael C. Welch, Suzanne M. Gessner, Sonia J. Patterson
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Patent number: 6228822Abstract: Described are novel synthetic detergent base materials having a pH from 5 to 8 and consisting essentially of from 45 to 70 weight percent of mild synthetic surfactant, salts thereof, or a mixture of the mild synthetic surfactant and salts thereof; from 20 to 30 weight percent of C8-C22 fatty acid; from 1.5 to 10 weight percent of C8-C22 n-acyl sarcosine, salts thereof, or a mixture of the sarcosine and salts thereof; from 0.5 to 5 weight percent of C1-C22 alkyl aryl sulfonic acid, salts thereof, or a mixture of the sulfonic acid and salts thereof; and from 1 to 5 weight percent soap, e.g., salts of C8-C22 fatty acid. Also described are syndet bars prepared from the synthetic detergent base material.Type: GrantFiled: May 9, 1995Date of Patent: May 8, 2001Assignee: BASF CorporationInventors: William C. Allison, Lorna Alderfer
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Patent number: 6187828Abstract: Disclosed herein is a continuous process to make super absorbing polymer characterized by feeding at the head-end of a pressurized vessel, an aqueous solution of SAP forming monomer solution, either in un-neutralized or pre-neutralized condition, the monomer(s) being conveyed to the reactor vessel at a relatively low temperature of from 5° C. to 15° C. into a pressurized head feed zone of the reactor. The head pressure is maintained the reactor at a minimum level of greater than or equal to about 20 p.s.i.g. and the SAP advances to the discharge end. A relatively constant mass of SAP is maintained of at least 50% volume of SAP in the vessel, and the rate of entry and exit are kept relatively constant. The reaction vessel is equipped with a venting means to regulate the internal bead pressure to advance the SAP to the discharge end without mechanical agitation.Type: GrantFiled: November 24, 1998Date of Patent: February 13, 2001Assignee: BASF CorporationInventors: G. Thomas Woodrum, Monte Alan Peterson
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Patent number: 6107432Abstract: The present invention relates to water-swellable, hydrophilic polymer compositions which can be prepared by free-radical (co)polymerization of one or more hydrophilic monomers in the presence of starch and/or chemically modified starch, wherein a free-radical initiator which forms three or more free radical sites per molecule is used.Type: GrantFiled: May 26, 1998Date of Patent: August 22, 2000Assignee: BASF AGInventors: Fritz Engelhardt, Rudiger Funk, Norbert Herfert, Matthias Weismantel
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Patent number: 6056854Abstract: A process to form a nonwoven, wet-laid, superabsorbent, polymer particle-impregnated fibrous structure on a commercial scale wet-forming machine having a head box, a forming section and a drying section, includingadding SAP to water under and within 5 seconds of the SAP water contact,providing agitation of at least 4000 Reynolds units thereby dispersing ungelled SAP particles throughout the fiber furnish,delivering the furnish to a moving foraminous support, forming a wet laid web containing wetted SAP particles, draining of water from the moving wet web, and conveying the web to the dryer section,wherein the maximum elapsed time from the point where SAP is mixed with water to the time the web passes into the dryer section is less than 45 seconds.Type: GrantFiled: March 27, 1998Date of Patent: May 2, 2000Assignee: BASF CorporationInventor: G. Thomas Woodrum
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Patent number: 5997690Abstract: A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion sensitive SAP having a particle size of less than 200 microns, wood pulp fibers and cellulose acetate fibers, each in preferred specified amounts indicated herein. The superabsorbent, ion sensitive polymer particle-impregnated fibrous structure is made from an aqueous, wet-lay process in which an aqueous furnish comprises solids of fibers and superabsorbent, ion sensitive polymer and dissolved salt, such as preferrably, Na.sub.2 SO.sub.4. The furnish is passed over a moving foraminous support, such as a Fourdrinier wire, and a wet web structure is formed, followed by drying.Type: GrantFiled: February 18, 1998Date of Patent: December 7, 1999Assignee: BASF CorporationInventor: G. Thomas Woodrum
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Patent number: 5973014Abstract: The present application relates to a process for the preparation of porous, hydrophilic, highly swellable hydrogels, which comprises freeze-drying hydrophilic, highly swellable hydrogels which have been swollen with water.Type: GrantFiled: March 27, 1997Date of Patent: October 26, 1999Inventors: Rudiger Funk, Norbert Herfert, Ulrich Riegel
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Patent number: 5945495Abstract: The present invention relates to the use of surfactants for improving the drying properties of hydrophilic, highly swellable hydrogels in the course of drying with the aid of contact dryers.Type: GrantFiled: January 17, 1997Date of Patent: August 31, 1999Assignee: BASF CorporationInventors: Thomas Daniel, Norbert Herfert, Gustav Remmel, Ulrich Riegel, Uwe Stuven, Fritz Engelhardt
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Patent number: 5882677Abstract: An improved hydrogel reservoir for use in two-compartment iontophoretic patches is described. The hydrogel reservoir contains a water soluble polyelectrolyte and a fluid. The reservoir may also contain a matrix forming material such as polyvinylpyrrolidone. A preferred water-soluble polyelectrolyte is sodium polystyrene sulfonate.Type: GrantFiled: September 30, 1997Date of Patent: March 16, 1999Assignee: Becton Dickinson and CompanyInventor: Gary B. Kupperblatt
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Patent number: 5877247Abstract: A stabilized aqueous slurry of magnesium hydroxide and a method for preparing the same are provided. The method involves an aqueous magnesium hydroxide slurry prepared with a combination of (a) one or more polymeric dispersants and (b) one or more water-soluble alkali metal salts. Slurries prepared according to the invention are less susceptible to increases in viscosity upon standing and remain flowable after several days.Type: GrantFiled: October 5, 1992Date of Patent: March 2, 1999Inventor: Robert Crouse Mahar
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Patent number: 5873850Abstract: An iontophoretic system including a controller and a patch is provided. The controller has a receiving portion including an upper surface and a lower surface, and a member protruding from the lower surface in a ramp-like fashion toward the upper surface and terminating in a top edge near the upper surface. The patch has an interconnection tab including an opening for engaging the protruding member of the controller when the interconnection tab is inserted into the receiving portion of the controller and the opening falls over the top edge of the protruding member.Type: GrantFiled: May 29, 1997Date of Patent: February 23, 1999Assignee: Becton Dickinson and CompanyInventors: Ronald J. Flower, Charles M. Huck
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Patent number: 5857994Abstract: An iontophoretic drug delivery device includes a controller normally being in an off or low power consumption state, and a patch including electrodes, a reservoir containing an ionizable drug for transcutaneous delivery to a patient and a return reservoir. The patch is removably and electrically connectable to the controller, and delivers the drug to patient when the patch is on the patient's skin and when the controller is switched from the off or low power consumption state to an operational state. This occurs when the patch is inserted into the controller. This feature preserves the battery of the controller. Upon patch insertion, the controller periodically changes from a non-current delivery state to a current delivery state for the predetermined period of time to deliver a pulse of current to the inserted patch. A current sensor within the controller measures the current delivered to the patch.Type: GrantFiled: October 1, 1996Date of Patent: January 12, 1999Assignee: Becton, Dickinson and CompanyInventor: Ronald J. Flower