Donald J Novkov

US Patent:

6543449, Apr 8, 2003

Filed:

Sep 18, 1998

Appl. No.:

09/156463

Inventors:

Paul L. Woodring - Del Mar CA
Gardner J. Kimm - Carlsbad CA
Robert L. Stephenson - Carlsbad CA
David R. Rogers - Solana Beach CA
Donald J. Novkov - Encinitas CA
Rebecca A. Mabry - Rancho Santo Margarita CA
Steve Harrington - Cardiff CA

Assignee:

Respironics, Inc.

International Classification:

A61M 1600

US Classification:

12820418, 12820421, 12820523

Abstract:

A ventilatory system which may be operated in an invasive and a non-invasive mode is provided utilizing a graphical user interface for presenting only those controlled parameters utilized for that specific mode of operation. Volume and pressure ventilatory support parameters are included for invasive ventilation and non-invasive ventilation control parameters are provided for non-invasive ventilatory assistance. The graphical user interface enables an operator to select the desired mode of operation wherein only those parameters related to that specific mode of operation are presented. Furthermore, a blower is provided for providing an air source to the ventilator enabling the ventilator to be self sufficient.

US Patent:

6764588, Jul 20, 2004

Filed:

May 17, 2002

Appl. No.:

10/150655

Inventors:

Stuart I. Smedley - Escondido CA
Donald James Novkov - Encinitas CA
Kent I. Smedley - San Marcos CA
Raymond H. Alstadt - Collierville TN
Frederick R. Grochulski - El Cajon CA

Assignee:

Metallic Power, Inc. - Carlsbad CA

International Classification:

C25C 700

US Classification:

205343, 205348, 204269, 204263, 429 27, 429 51, 429 70, 429 80, 429118

Abstract:

A method of and system for flushing one or more cells or components thereof in a particle-based electrochemical power source is provided. Reaction solution is delivered to and withdrawn from the one or more cells when the electrochemical power source is in a standby mode of operation.

US Patent:

7273537, Sep 25, 2007

Filed:

Apr 24, 2003

Appl. No.:

10/424571

Inventors:

Stuart I. Smedley - Escondido CA, US
Martin De Tezanos Pinto - Houston TX, US
Stephen R. Des Jardins - Encinitas CA, US
Donald James Novkov - Encinitas CA, US
Ronald Gulino - San Diego CA, US

Assignee:

Teck Cominco Metals, Ltd. - Vancouver

International Classification:

C25D 1/00

US Classification:

205 74, 205602

Abstract:

A method of producing metal particles through electrolysis. A cathode having a plurality of active zones on a surface thereof is at least partially immersed in a reaction solution. The cathode is spaced from an anode also at least partially immersed in the reaction solution. A voltage potential is applied between the anode and cathode. Metal particles form on the active zones of the cathode. In order to promote the formation of good quality particles, a turbulent flow of the solution is maintained past one or more the active zones, and the current density in the active zones is maintained greater than about 5 kA/m. The particles may be dislodged from the cathode after they have achieved a desired size.

US Patent:

7276309, Oct 2, 2007

Filed:

Sep 12, 2003

Appl. No.:

10/661087

Inventors:

Kent I. Smedley - San Marcos CA, US
Ronald Gulino - San Diego CA, US
Donald James Novkov - Encinitas CA, US
Ethan T. Alger - Oceanside CA, US
Jesse Rosen - San Diego CA, US
Stuart I. Smedley - Escondido CA, US

Assignee:

Teck Cominco Metals, Ltd. - Vancouver

International Classification:

H01M 2/38
H01M 12/06

US Classification:

429 27, 429 15, 429 22

Abstract:

Improved fuel cell systems comprise a fuel delivery system having a fluidization apparatus and a fluidization pump for creating an electrolyte flow suitable for fluidizing at least a portion of the fuel particles located within the fluidization apparatus. Due to the presence of the fluidization pump and the fuel delivery pump, the degree of fluidization of the fuel particles can be controlled independently of the overall electrolyte flow rate provided to the cell stacks. In other words, the mass flow rate of fuel particles through the fuel cell can be varied independently from the total flow rate through the fuel cell system. The fluidization of fuel particles can facilitate suitable mixing of fuel particles and electrolyte and can prevent fuel particle agglomeration, which can clog the fuel cell piping system. In some embodiments, a splitter element can be positioned within the container to divide the fuel and electrolyte flow exiting the container into multiple flows, which prevents the blockage of one pathway from completely starving the cell stacks of fuel and electrolyte.

US Patent:

7470351, Dec 30, 2008

Filed:

Apr 24, 2003

Appl. No.:

10/424539

Inventors:

Stuart I. Smedley - Escondido CA, US
Martin De Tezanos Pinto - Houston TX, US
Stephen R. Des Jardins - Encinitas CA, US
Donald James Novkov - Encinitas CA, US
Ronald Gulino - San Diego CA, US

Assignee:

Teck Cominco Metals Ltd. - Mississauga, Ontario

International Classification:

C25B 11/03
C25B 9/06
C25C 1/12
C25C 1/16

US Classification:

204281, 204284, 204285, 2042861, 20429001, 204224 R, 205369, 205370, 205374, 205574, 205597, 205594, 205602

Abstract:

A system for producing metal particles using a discrete particle electrolyzer cathode, a discrete particle electrolyzer cathode, and methods for manufacturing the cathode. The cathode has a plurality of active zones on a surface thereof at least partially immersed in a reaction solution. The active zones are spaced from one another by between about 0. 1 mm and about 10 mm, and each has a surface area no less than about 0. 02 square mm. The cathode is spaced from an anode also at least partially immersed in the reaction solution. A voltage potential is applied between the anode and cathode. Metal particles form on the active zones of the cathode. The particles may be dislodged from the cathode after they have achieved a desired size. The geometry and composition of the active zones are specified to promote the growth of high quality particles suitable for use in metal/air fuel cells. Cathodes may be formed from bundled wire, machined metal, chemical etching, or chemical vapor deposition techniques.

US Patent:

20030062045, Apr 3, 2003

Filed:

Nov 15, 2002

Appl. No.:

10/295141

Inventors:

Paul Woodring - Del Mar CA, US
Gardner Kimm - Carlsbad CA, US
Robert Stephenson - Carlsbad CA, US
David Rogers - Solana Beach CA, US
Donald Novkov - Encinitas CA, US
Rebecca Mabry - Rancho Santo Margarita CA, US
Steve Harrington - Cardiff CA, US

Assignee:

Respironics, Inc. - Murrysville PA

International Classification:

A61M016/00

US Classification:

128/204180, 128/204210

Abstract:

A ventilatory system which may be operated in an invasive and a non-invasive mode is provided utilizing a graphical user interface for presenting only those controlled parameters utilized for that specific mode of operation. Volume and pressure ventilatory support parameters are included for invasive ventilation and non-invasive ventilation control parameters are provided for non-invasive ventilatory assistance. The graphical user interface enables an operator to select the desired mode of operation wherein only those parameters related to that specific mode of operation are presented. Furthermore, a blower is provided for providing an air source to the ventilator enabling the ventilator to be self sufficient.

US Patent:

20040053104, Mar 18, 2004

Filed:

Sep 12, 2003

Appl. No.:

10/660947

Inventors:

Donald Novkov - Encinitas CA, US
Stuart Smedley - Escondido CA, US

International Classification:

H01M008/24
H01M002/08
H01M008/02

US Classification:

429/034000, 429/035000, 429/038000, 429/210000

Abstract:

Improved electrochemical cell plates comprise a polymer layer and an electrically conductive structure that passes through the polymer layer, which provides electrical conductivity between adjacent cells in an electrochemical cell stack. Since the cell plates are composed of a polymeric layer, the cell plates can be more easily sealed to cell frame of the fuel cell stack. Additionally, the conductive structures of the cell plates provide low electrical resistance pathways for current flow between the anode of one cell and the cathode of an adjacent cell. Furthermore, in some embodiments of the present disclosure, the conductive structure can also serve to maintain the spacing between adjacent cells.

US Patent:

20040137291, Jul 15, 2004

Filed:

Sep 12, 2003

Appl. No.:

10/661409

Inventors:

Stuart Smedley - Escondido CA, US
Donald Novkov - Encinitas CA, US
Ethan Alger - Oceanside CA, US
Stephen Des Jardins - Encinitas CA, US
Rajagopalan Sundar - San Diego CA, US

International Classification:

H01M008/04

US Classification:

429/022000, 429/023000, 429/013000

Abstract:

A self-controlling fuel cell power system comprises a fuel cell subsystem having a plurality of possible operating states and a controller which transitions the subsystem among the states. A related method comprises sensing one or more subsystem parameters, and, responsive thereto, transitioning the subsystem among the operating states.