Patents by Inventor Damian A. Hajduk
Damian A. Hajduk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6767968Abstract: Block copolymers are prepared by living-type or semi-living type free radical polymerization, with said copolymers having at least one random block comprised of at least one hydrophobic monomer and at least one hydrophilic monomer. The selection of hydrophobic and hydrophilic monomers in the random block is determined by the relative hydrophobicity of the monomers to impart selected solubility or dispersability in water and/or alcohols of the overall block copolymer.Type: GrantFiled: October 3, 2000Date of Patent: July 27, 2004Assignee: Symyx Technologies, Inc.Inventors: Mingjun Liu, Damian Hajduk, Jean M. J. Fréchet, Ezat Khoshdel, Ralph B. Nielsen, Dominique Charmot
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Publication number: 20040113602Abstract: The present invention provides instruments and methods for screening combinatorial libraries that addresses many of the problems encountered when using conventional instruments. For example, the disclosed instruments can measure mechanical properties of library members in rapid serial or parallel test format, and can perform tests on small amounts of material, which are easily prepared or dispensed using art-disclosed liquid or solid handling techniques. Compared to conventional instruments, the disclosed instruments afford faster sample loading and unloading, for example, through the use of disposable libraries of material samples.Type: ApplicationFiled: November 17, 2003Publication date: June 17, 2004Applicant: Symyx Technologies, Inc.Inventors: Damian A. Hajduk, Eric D. Carlson, J. Christopher Freitag, Oleg Kolosov, James R. Engstrom, Adam Safir, Ravi Srinivasan, Leonid Matsiev
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Publication number: 20040096411Abstract: Cosmetic or personal care compositions, such as for styling hair, comprise a thermoplastic elastomer which is a block copolymer comprising a core polymer having a backbone comprising at least a proportion of C—C bonds and two or more flanking polymers. Each flanking polymer is covalently bound to an end of the core polymer and the core polymer and/or at least one of the flanking polymers is a copolymer derived from two or more monomers. The compositions comprise a cosmetically acceptable diluent or carrier.Type: ApplicationFiled: October 30, 2003Publication date: May 20, 2004Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Jean M.J. Frechet, Damian Hajduk, Ezat Khoshdel, Mingjun Liu, Ralph B. Nielsen, Euan Stuart Reid, Keith Leslie Rutherford
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Publication number: 20040093932Abstract: The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element.Type: ApplicationFiled: November 12, 2003Publication date: May 20, 2004Applicant: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, Ravi Srinivasan
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Patent number: 6732574Abstract: An apparatus and method for measuring viscosity or related properties of fluid samples in parallel is disclosed. The apparatus includes a plurality of tubes and reservoirs in fluid communication with the tubes. The tubes provide flow paths for the fluid samples, which are initially contained within the reservoirs. The apparatus also includes a mechanism for filling the reservoirs with the fluid samples, and a device for determining volumetric flow rates of fluid samples flowing from the reservoirs through the plurality of tubes simultaneously. The disclosed apparatus is capable of measuring viscosity or related properties of at least five fluid samples simultaneously. Useful reservoirs and tubes include syringes.Type: GrantFiled: March 22, 2002Date of Patent: May 11, 2004Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Paul Mansky
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Publication number: 20040077091Abstract: A library of material samples is screened for properties such as permeability. A library of material samples is provided. A stimulus such as an exposure to a permeate fluid is provided to each member of the library. A response of each of the material samples due to the stimulus is measured and the response, the stimulus or both are recorded and related to provide data. Thereafter, the data is analyzed to reach conclusions regarding the properties of the material samples.Type: ApplicationFiled: October 18, 2002Publication date: April 22, 2004Applicant: Symyx Technologies, Inc.Inventors: Damian A. Hajduk, Oleg Kolosov
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Patent number: 6690179Abstract: One aspect of the present invention provides instruments for measuring mechanical properties of a combinatorial library of materials. The instruments include at least one capacitor to which a member of a library of material samples is removably secured for testing; at least one voltage source for delivering one or more forces to each library member; and at least one sensing device for monitoring the response each library member to the one or more forces. Another aspect of the present invention provides methods of screening a combinatorial library of materials where the method monitors the responses of a plurality of samples on a substrate to a force induced by a capacitor.Type: GrantFiled: August 24, 2001Date of Patent: February 10, 2004Assignee: Symyx Technologies, Inc.Inventors: Damian A. Hajduk, Eric D. Carlson, J. Christopher Freitag, Oleg Kolosov, James R. Engstrom, Adam Safir, Ravi Srinivasan, Leonid Matsiev
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Patent number: 6685925Abstract: Cosmetic or personal care compositions, such as for styling hair, comprise a thermoplastic elastomer which is a block copolymer comprising a core polymer having a backbone comprising at least a proportion of C—C bonds and two or more flanking polymers. Each flanking polymer is covalently bound to an end of the core polymer and the copolymer is soluble at a level of at least 1% by weight in water at 25° C. The compositions comprise a cosmetically acceptable diluent or carrier.Type: GrantFiled: October 3, 2001Date of Patent: February 3, 2004Inventors: Jean M. J. Frechet, Damian Hajduk, Ezat Khoshdel, Mingjun Liu, Ralph B. Nielsen, Euan Stuart Reid, Keith Leslie Rutherford
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Publication number: 20040017896Abstract: An apparatus for characterizing a library containing an array of samples. The apparatus includes an x-ray beam directed at the library, a chamber housing the library and a beamline for directing the x-ray beam onto the library in the chamber. The chamber may include a translation stage that holds the library and that is programmable to change the position of the library relative to the x-ray beam and a controller that controls the movement of the translation stage to expose an element to the x-ray beam in order to rapidly characterize the element in the library. During the characterization, the x-ray beam diffracts upon impinging the element and a detector detects the diffracted x-ray beam in order to generate characterization data for the element.Type: ApplicationFiled: May 22, 2003Publication date: January 29, 2004Applicant: Symyx Technologies, Inc.Inventors: Damian Hajduk, James Bennett, Rakesh Jain
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Patent number: 6681618Abstract: The present invention relates to a miniature rheometer and improved force sensor elements which may advantageously be used in combination with the miniature rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element. Moreover, the force sensor may employ stress-optic material.Type: GrantFiled: October 1, 2002Date of Patent: January 27, 2004Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, Ravi Srinivasan
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Instrument for high throughput measurement of material physical properties of a plurality of samples
Patent number: 6679130Abstract: An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library members, an array of probes for mechanically perturbing individual library members, and an array of sensors for measuring the response of each of the library members to the mechanical perturbations. Library members undergoing screening make up a sample array, and individual library members constitute elements of the sample array that are confined to specific locations on the sample holder. During screening, the apparatus mechanically perturbs individual library members by displacing the sample array (sample holder) and the array of probes. Typically, all of the elements of the sample array are perturbed simultaneously, but the apparatus also can also perturb individual or groups of sample array elements sequentially.Type: GrantFiled: February 8, 2001Date of Patent: January 20, 2004Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, J. Christopher Freitag, Oleg Kosolov -
Patent number: 6668622Abstract: The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element.Type: GrantFiled: July 25, 2002Date of Patent: December 30, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, Ravi Srinivasan
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Patent number: 6663855Abstract: Cosmetic or personal care compositions, such as for styling hair, comprise a thermoplastic elastomer which is a block copolymer comprising a core polymer having a backbone comprising at least a proportion of C—C bonds and two or more flanking polymers. Each flanking polymer is covalently bound to an end of the core polymer and the core polymer and/or at least one of the flanking polymers is a copolymer derived from two or more monomers. The compositions comprise a cosmetically acceptable diluent or carrier.Type: GrantFiled: October 3, 2001Date of Patent: December 16, 2003Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Jean M. J. Frechet, Damian Hajduk, Ezat Khoshdel, Mingjun Liu, Ralph B. Nielsen, Euan Stuart Reid, Keith Leslie Rutherford
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Patent number: 6664067Abstract: An apparatus and method for screening combinatorial libraries of materials by measuring the response of individual library members to mechanical perturbations is described. The apparatus generally includes a sample holder for containing the library members, an array of probes for mechanically perturbing individual library members, and an array of sensors for measuring the response of each of the library members to the mechanical perturbations. Library members undergoing screening make up a sample array, and individual library members constitute elements of the sample array that are confined to specific locations on the sample holder. During screening, the apparatus mechanically perturbs individual library members by displacing the sample array (sample holder) and the array of probes. Typically, all of the elements of the sample array are perturbed simultaneously, but the apparatus also can also perturb individual or groups of sample array elements sequentially.Type: GrantFiled: May 26, 2000Date of Patent: December 16, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, J. Christopher Freitag, Oleg Kosolov
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Patent number: 6655194Abstract: The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element.Type: GrantFiled: October 1, 2002Date of Patent: December 2, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, Ravi Srinivasan
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Patent number: 6650102Abstract: The present invention provides instruments and methods for screening combinatorial libraries that addresses many of the problems encountered when using conventional instruments. For example, the disclosed instruments can measure mechanical properties of library members in rapid serial or parallel test format, and can perform tests on small amounts of material, which are easily prepared or dispensed using art-disclosed liquid or solid handling techniques. Compared to conventional instruments, the disclosed instruments afford faster sample loading and unloading, for example, through the use of disposable libraries of material samples.Type: GrantFiled: August 24, 2001Date of Patent: November 18, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian A. Hajduk, Eric D. Carlson, J. Christopher Freitag, Oleg Kolosov, James R. Engstrom, Adam Safir, Ravi Srinivasan, Leonid Matsiev
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Patent number: 6644101Abstract: The present invention relates to a miniature rheometer, a parallel rheometer, and improved force sensor elements which may advantageously be used in combination with the miniature rheometer and the parallel rheometer. The miniature rheometer is adapted to determine rheological characteristics of materials which are provided in the form of small quantity samples. The miniature rheometer comprises an actuating element, a sensing element and a feedback circuit to provide rebalance of the shear force applied by the sample to the sensing element, which insures an exceptional stiffness in determining the shear strain so as to allow measurements of high accuracy. The parallel rheometer of the present invention allows simultaneous measurements of a plurality of samples so as to allow of a plurality of samples within a short time period. The force sensor element according to the present invention allows simultaneous measurement of a shear force and a normal force applied to the sensor element.Type: GrantFiled: October 1, 2002Date of Patent: November 11, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, Eric Carlson, Ravi Srinivasan
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Publication number: 20030190755Abstract: Devices and methods for controlling and monitoring the progress and properties of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixtures or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injecting liquids into the vessels at a pressure different than ambient pressure. In situ monitoring of individual reaction mixtures provides feedback for process controllers, and also provides data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight.Type: ApplicationFiled: March 25, 2003Publication date: October 9, 2003Applicant: Symyx Technologies, Inc.Inventors: Howard Turner, G. Cameron Dales, Lynn VanErden, Johannes A.M. VanBeek, Damian A. Hajduk, Ralph B. Nielsen, Paul Mansky, Leonid Matsiev, Pei Wang, Eric McFarland
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Publication number: 20030157721Abstract: Devices and methods for controlling and monitoring the progress and properties of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixtures or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injecting liquids into the vessels at a pressure different than ambient pressure. In situ monitoring of individual reaction mixtures provides feedback for process controllers, and also provides data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight.Type: ApplicationFiled: August 28, 2002Publication date: August 21, 2003Applicant: Symyx Technologies, Inc.Inventors: Howard Turner, G. Cameron Dales, Lynn vanErden, Johannes A.M. van Beek, Damian A. Hajduk, Ralph B. Nielsen, Paul Mansky, Leonid Matsiev, Pei Wang, Eric McFarland
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Patent number: 6605473Abstract: A method for preparing a library is provided in which the library contains an array of elements and each element contains a different combination of materials. A related apparatus includes an x-ray beam directed at the library, a chamber which houses the library and a beamline for directing the x-ray beam onto the library in the chamber. The chamber may include a translation stage that holds the library and that is programmable to change the position of the library relative to the x-ray beam and a controller that controls the movement of the translation stage to expose an element to the x-ray beam in order to rapidly characterize the element in the library. During the characterization, the x-ray beam scatters off of the element and a detector detects the scattered x-ray beam in order to generate characterization data for the element.Type: GrantFiled: September 20, 2000Date of Patent: August 12, 2003Assignee: Symyx Technologies, Inc.Inventors: Damian Hajduk, James Bennett, Rakesh Jain