Jan J Lewandowski

Author:

Jan F. Lewandowski

ISBN #:

8371641419

Author:

Jan F. Lewandowski

ISBN #:

8371830424

Author:

Jan Lewandowski

ISBN #:

8321100449

Author:

Jan Lewandowski

ISBN #:

8322714998

Author:

Jan Lewandowski

ISBN #:

8323098980

Author:

Jan Lewandowski

ISBN #:

8371644272

Author:

Jan Lewandowski

ISBN #:

8385854177

Author:

Jan Lewandowski

ISBN #:

8388542044

US Patent:

6558529, May 6, 2003

Filed:

Feb 7, 2000

Appl. No.:

09/499421

Inventors:

Iain F. McVey - Lakewood OH
Brian J. DeSantis - Chicago IL
Jan J. Lewandowski - South Euclid OH
Karen L. Thomas - Eastlake OH
Brian E. Schindly - Mentor OH

Assignee:

Steris Inc. - Temecula CA

International Classification:

G01N 2726

US Classification:

205787, 134 2, 134 42, 134113, 134201, 204400, 204402, 204412, 205775

Abstract:

An electrochemical sensor (A, Aâ) is specific for the detection of peroxyacetic acid in a solution which also contains hydrogen peroxide. A potential is applied between a reference electrode ( â) and a working electrode ( â). A read voltage (FIG. ) is selectively pulsed across a counter electrode ( â) and the working electrode. The current flowing between the working electrode and the counter electrode is dependent on the peroxyacetic acid concentration in the solution (FIG. ). By careful selection of the read voltage, the contribution of hydrogen peroxide to the current flow is virtually negligible. The sensor effectively measures peroxyacetic acid concentrations in the range generally employed in sterilization and disinfection baths (100-3000 ppm. ).

US Patent:

6592730, Jul 15, 2003

Filed:

Feb 7, 2000

Appl. No.:

09/499479

Inventors:

Daniel N. Kelsch - Fairview Park OH
Iain F. McVey - Lakewood OH
Jan J. Lewandowski - South Euclid OH

Assignee:

Steris Inc. - Temecula CA

International Classification:

G01N 2726

US Classification:

204412, 134 56 R, 134 58 R, 2042861, 204294, 20429701, 204400, 205787

Abstract:

An electrochemical analysis system includes a chamber ( ) that defines a fluid receiving reservoir therein. A working electrode ( ), a reference electrode ( ), and a counter electrode ( ) is mounted to the chamber. An electrochemical analysis circuit ( ) applies appropriate voltages to the electrodes and reads appropriate currents from the electrodes to provide an indication of the peroxyacetic acid concentration in a sample. The working electrode includes a glassy carbon rod ( ) which is surrounded by a compressible polymeric sleeve ( ) and a metal sleeve ( ). One end of the metal sleeve is swaged ( ) to form a fluid tight compression seal with the insulating sleeve and the glassy carbon rod. An electrically conductive thermal extension joint between the glassy carbon rod and an electrically conductive rod ( ) includes a bore ( ) in the conductive rod in which the glassy carbon rod is slidably received and a compressed spring ( ) in the bore.

US Patent:

7131946, Nov 7, 2006

Filed:

Dec 5, 2003

Appl. No.:

10/729741

Inventors:

Jan Lewandowski - South Euclid OH, US

Assignee:

Biomec, Inc. - Cleveland OH

International Classification:

A61B 8/00

US Classification:

600438, 600459, 600559

Abstract:

An apparatus and method for detecting an ear disorder. The apparatus includes structure for transmitting and receiving a plurality of signals to interact with an ear, and includes structure for directing the plurality of signals along different directions. In one example, the apparatus includes a plurality of transducers, each for interacting with a different ear portion. The transducers may be in a curved array. A determination as to which of the transducers is operable to provide an accurate indication of the detected ear disorder can be made. The transducers can be operated sequentially. In general, the method includes transmitting and receiving a plurality of signals to interact with an ear for ear disorder detection, and directing the plurality of signals along different directions. In one example the method includes providing a probe that has a plurality of transducers for use in detecting the ear disorder.

US Patent:

7632232, Dec 15, 2009

Filed:

Dec 5, 2003

Appl. No.:

10/729199

Inventors:

Jan Lewandowski - South Euclid OH, US
Robert A. Bessler - Brownspoint WA, US

Assignee:

Otosonics Inc. - Cleveland OH

International Classification:

A61B 8/00

US Classification:

600438, 600437

Abstract:

An apparatus and method for determining ear fluid viscosity. A transducer is operable to transceive a signal to interact with a fluid-containing portion of the ear. The viscosity of the fluid is determined using the transcieved signal.

US Patent:

20030209450, Nov 13, 2003

Filed:

Apr 1, 2003

Appl. No.:

10/404609

Inventors:

Iain McVey - Lakewood OH, US
Brian DeSantis - Chicago IL, US
Jan Lewandowski - South Euclid OH, US
Karen Thomas - Eastlake OH, US
Brian Schindly - Mentor OH, US

International Classification:

G01N027/26

US Classification:

205/782000, 204/416000, 204/412000, 205/789000

Abstract:

An electrochemical sensor (A, A′) is specific for the detection of peroxyacetic acid in a solution which also contains hydrogen peroxide. A potential is applied between a reference electrode () and a working electrode (). A read voltage (FIG. ) is selectively pulsed across a counter electrode () and the working electrode. The current flowing between the working electrode and the counter electrode is dependent on the peroxyacetic acid concentration in the solution (FIG. ). By careful selection of the read voltage, the contribution of hydrogen peroxide to the current flow is virtually negligible. The sensor effectively measures peroxyacetic acid concentrations in the range generally employed in sterilization and disinfection baths (100-3000 ppm.).

US Patent:

20070261494, Nov 15, 2007

Filed:

Apr 3, 2007

Appl. No.:

11/696036

Inventors:

William R. Fuller - Chagrin Falls OH, US
Daniel N. Kelsch - Fairview Park OH, US
Jan J. Lewandowski - South Euclid OH, US
Grazyna Palczewska - Bay Village OH, US
Alexander K. Smith - Newton Falls OH, US

Assignee:

BIOMEC, INC. - Cleveland OH

International Classification:

G01N 29/04

US Classification:

73620, 600459

Abstract:

Detection apparatus can include a positioning device with a wall including a substantially conical inner surface and a detection device configured to send and receive signals and move along the conical inner surface. Detection apparatus are also provided that comprise a positioning device and an end portion with an image port, a light device, and a detection device configured to send and receive signals. Ultrasonic transducer devices are also provided with a transducer material layer, a contact plating layer including a convex portion with an array of transducer elements, an acoustic matching layer, and a top plating layer.

US Patent:

20080262614, Oct 23, 2008

Filed:

Apr 4, 2008

Appl. No.:

12/062768

Inventors:

Roger E. MARCHANT - Cleveland Heights OH, US
Jan J. LEWANDOWSKI - South Euclid OH, US
Yubiao LIU - Solon OH, US

Assignee:

NANOMIMETICS, INC. - Cleveland OH

International Classification:

A61F 2/08
A61F 2/00
C08F 16/06
C08F 12/28
C08G 69/00

US Classification:

623 1111, 424423, 526 72, 526310, 528332

Abstract:

Comblike, surfactant polymers for changing the surface properties of biomaterials are provided. Such surfactant polymers comprise a polymeric backbone of repeating monomeric units having functional groups for coupling with side chains, a plurality of hydrophobic side chains linked to the backbone via the functional groups, and a plurality of hydrophilic side chains linked to said backbone via the functional groups. Medical devices coated with the surfactant polymers are also provided. The surfactant polymers may be used to decrease the thrombogenic properties, encapsulation, and bacterial colonization of medical devices.

US Patent:

20100069752, Mar 18, 2010

Filed:

Nov 23, 2009

Appl. No.:

12/623874

Inventors:

Jan Lewandowski - South Euclid OH, US
Robert A. Bessler - Brownspoint WA, US

Assignee:

OTOSONICS, INC. - Cleveland OH

International Classification:

A61B 8/00

US Classification:

600438

Abstract:

An apparatus and method for determining ear fluid viscosity. A transducer is operable to transceive a signal to interact with a fluid-containing portion of the ear. The viscosity of the fluid is determined using the transceived signal.