Patents by Inventor Richard L. Schulkind
Richard L. Schulkind 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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Publication number: 20040188252Abstract: A modular reference electrode assembly having a constrained-diffusion liquid junction between a liquid junction solution and a sample solution having separate flow paths, said assembly comprising a flow cell having attached thereto a constraint comprising a region of porous material permeable to water and salts; a remote reservoir for holding said liquid junction solution; a means for moving said liquid junction solution from said reservoir to said constraint; and a reference contact region is provided. This unique configuration provides a reference electrode device of the constrained-diffusion liquid junction type useful in pH and/or ion-selective electrode (ISE) potentiometric sensors and is particularly suitable for use in a mini-integrated electrochemical analyzer.Type: ApplicationFiled: April 12, 2004Publication date: September 30, 2004Inventors: Andy D.C. Chan, Joseph S. Foos, James E. Rasmussen, Richard L. Schulkind, John A. Zalenski
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Patent number: 6719888Abstract: A reference electrode assembly having a constrained-diffusion liquid junction between a liquid junction solution and a sample solution having separate flow paths, said assembly comprising a flow cell having attached thereto a constraint comprising a region of porous material permeable to water and salts; a remote reservoir for holding said liquid junction solution; a means for moving said liquid junction solution from said reservoir to said constraint; and a reference contact region is provided. This unique configuration provides a reference electrode device of the constrained-diffusion liquid junction type useful in pH and/or ion-selective electrode (ISE) potentiometric sensors and is particularly suitable for use in a mini-integrated electrochemical analyzer.Type: GrantFiled: August 29, 1997Date of Patent: April 13, 2004Assignee: Bayer CorporationInventors: Andy D. C. Chan, Joseph S. Foos, James E. Rasmussen, Richard L. Schulkind, John A. Zalenski
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Patent number: 5750906Abstract: The invention features a sample probe and reagent selector valve that enables selection among multiple functions of withdrawing a biological sample from a syringe or capillary into a fluid parameter sensor module, providing calibration and quality control reagents to the sensor module, and flowing a washing fluid through intake passages to prevent cross-contamination and clogging. The valve and sensor module are used in conjunction with an automated analytical instrument, such as an automated blood analyzer, to increase the speed of the analysis, minimize cross contamination between samples, and to overcome the inherent dangers of using the conventional needle/syringe or capillary methods of withdrawing fluids to be tested. The design of the valve provides performance benefits in the form of lower sample and reagent waste volumes, elimination of auxiliary valves and manifolds, and superior performance and reduced cost.Type: GrantFiled: October 29, 1996Date of Patent: May 12, 1998Assignee: Chiron Diagnostics CorporationInventors: Norman K. Parker, James E. Rasmussen, Richard L. Schulkind, Kevin J. Sullivan, Robert B. Green
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Patent number: 5738992Abstract: An evanescent wave system and method including an optical sensor for use in assaying a reference material and at least one molecular species or analyte in a test medium or test sample for diagnostic and other applicable purposes. The sensor includes a waveguide for propagating a radiation input along its length. The radiation input causes evanescent electromagnetic waves that are capable of stimulating output emissions that are indicative of a reference material and of one or more molecular species or analytes. By comparing the emission(s) indicative of the reference material to the emission indicative of the presence of the molecular species or analyte, the presence and concentration of the molecule in the sample can be determined. The reference material provides for normalization and/or calibration of the system.Type: GrantFiled: April 9, 1996Date of Patent: April 14, 1998Assignee: Chiron CorporationInventors: Thomas A. Cook, Rudolf E. Slovacek, Walter F. Love, Richard L. Schulkind, Irene M. Walczak
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Patent number: 5525466Abstract: An evanescent wave system and method including an optical sensor for use in assaying a reference material and at least one molecular species or analyte in a test medium or test sample for diagnostic and other applicable purposes. The sensor includes a waveguide for propagating a radiation input along its length. The radiation input causes evanescent electromagnetic waves that are capable of stimulating output emissions that are indicative of a reference material and of one or more molecular species or analytes. By comparing the emission(s) indicative of the reference material to the emission indicative of the presence of the molecular species or analyte, the presence and concentration of the molecule in the sample can be determined. The reference material provides for normalization and/or calibration of the system.Type: GrantFiled: May 20, 1994Date of Patent: June 11, 1996Assignee: Ciba Corning Diagnostics Corp.Inventors: Rudolf E. Slovacek, Walter F. Love, Richard L. Schulkind, Irene M. Walczak, Thomas A. Cook
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Patent number: 5391499Abstract: A novel fluid sampling device has been developed. This device provides for sample entry to be handled automatically by the instrument, thus allowing the operator to be involved in other activities while the sampling process is underway. It also assures reproduceable sample size, automatically cleans the sampling device between samples, and reduces the risk of user injury. Furthermore, the sampling system allows for the use of any forseeable collection mechanism.Type: GrantFiled: November 24, 1993Date of Patent: February 21, 1995Assignee: Ciba Corning Diagnostics Corp.Inventors: Peter N. Karkantis, Beat R. Degen, Richard A. Dussault, Richard L. Schulkind, Norman K. Parker
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Patent number: 5372782Abstract: A novel fluid sampling device has been developed. This device provides for sample entry to be handled automatically by the instrument, thus allowing the operator to be involved in other activities while the sampling process is underway. It also assures reproduceable sample size, automatically cleans the sampling device between samples, and reduces the risk of user injury. Furthermore, the sampling system allows for the use of any forseeable collection mechanism.Type: GrantFiled: May 29, 1992Date of Patent: December 13, 1994Assignee: Ciba Corning Diagnostics Corp.Inventors: Peter N. Karkantis, Beat R. Degen, Richard A. Dussault, Richard L. Schulkind, Norman K. Parker
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Patent number: 5340715Abstract: An evanescent wave sensor and method for use in analyzing one or more media, the sensor including a waveguide having first and second wave propagating surfaces. The waveguide propagates an input signal along the waveguide between the first and second surfaces. The first surface receives a first radiation signal which indicates the presence of a first analyte, and the second surface receives a second radiation signal representing one or both of a second analyte and a reference. The first and second surfaces can both be contacted with a single medium, or with two separate media, and one or more output signals can be detected.Type: GrantFiled: June 7, 1991Date of Patent: August 23, 1994Assignee: Ciba Corning Diagnostics Corp.Inventors: Rudolf E. Slovacek, Walter F. Love, Thomas A. Cook, Richard L. Schulkind, Irene M. Walczak