Ambar K Mitra

US Patent:

7998323, Aug 16, 2011

Filed:

Jun 7, 2007

Appl. No.:

11/811288

Inventors:

Abhijit Chandra - Ames IA, US
Ashraf F. Bastawros - Ames IA, US
Ambar K. Mitra - Ames IA, US
Charles A. Lemaire - Apple Valley MN, US

Assignee:

Actus Potentia, Inc. - Ames IA

International Classification:

C25D 17/00

US Classification:

204224M

Abstract:

A Focused Electric Field Imprinting (FEFI) process and apparatus provides a focused electric field to guide an unplating operation and/or a plating operation to form very fine-pitched metal patterns on a substrate. The process is a variation of the electrochemical unplating process, wherein the process is modified for imprinting range of patterns of around 2000 microns to 20 microns or less in width, and from about 0. 1 microns or less to 10 microns or more in depth. Some embodiments curve a proton-exchange membrane whose shape is varied using suction on a backing fluid through a support mask. Other embodiments use a curved electrode. Mask-membrane interaction parameters and process settings vary the feature size, which can generate sub-100-nm features. The feature-generation process is parallelized, and a stepped sequence of such FEFI operations, can generate sub-100 nm lines with sub-100 nm spacing. The described FEFI process is implemented on copper substrate, and also works well on other conductors.

US Patent:

8112384, Feb 7, 2012

Filed:

Oct 25, 2005

Appl. No.:

11/259171

Inventors:

Ambar K. Mitra - Ames IA, US
Abhijit Chandra - Ames IA, US
Craig D. Herreman - Tucson AZ, US
Joel P. Dunham - Bettendorf IA, US

Assignee:

Actus Potentia, Inc. - Ames IA

International Classification:

G06F 17/00

US Classification:

707603, 706 45

Abstract:

The present invention provides a computer-implemented method of problem solving that includes graphically displaying a plurality of concepts, dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Other embodiments include: a computer-readable medium having instructions thereon for causing a suitably programmed information-processing apparatus to perform a method of the problem solving that includes graphically displaying a plurality of concepts, displaying dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Still other embodiments include a computerized apparatus that includes a display output unit, a display drive unit that causes a plurality of concepts to be displayed on the display unit, and that causes dynamic links between the concepts to be displayed, and a solution unit that solves a problem based on the displayed concepts and dynamic links, and that displays the solution.

US Patent:

8617378, Dec 31, 2013

Filed:

Aug 16, 2011

Appl. No.:

13/210372

Inventors:

Ambar K. Mitra - Ames IA, US
Ashraf F. Bastawros - Ames IA, US
Abhijit Chandra - Ames IA, US
Charles A. Lemaire - Apple Valley MN, US

Assignee:

Actus Potentia, Inc. - Ames IA

International Classification:

B23H 3/00
C25D 5/02

US Classification:

205668, 205118, 205136, 204224 M

Abstract:

Focused Electric Field Imprinting (FEFI) provides a focused electric field to guide an unplating operation and/or a plating operation to form very fine-pitched metal patterns on a substrate. The process is a variation of the electrochemical unplating process, wherein the process is modified for imprinting range of patterns of around 2000 microns to 20 microns or less in width, and from about 0. 1 microns or less to 10 microns or more in depth. Some embodiments curve a proton-exchange membrane whose shape is varied using suction on a backing fluid through a support mask. Other embodiments use a curved electrode. Mask-membrane interaction parameters and process settings vary the feature size, which can generate sub-100-nm features. The feature-generation process is parallelized, and a stepped sequence of such FEFI operations, can generate sub-100-nm lines with sub-100-nm spacing. The described FEFI process is implemented on copper substrate, and also works well on other conductors.

US Patent:

20070190515, Aug 16, 2007

Filed:

Jan 23, 2007

Appl. No.:

11/626344

Inventors:

Ambar Mitra - Ames IA, US
Abhijit Chandra - Ames IA, US
Craig Herreman - Tucson AZ, US
Joel Dunham - Cascade MT, US
Robert Harris - Ankeny IA, US
Dipayan Mitra - Ames IA, US

Assignee:

ACTUS POTENTIA, INC. - Ames IA

International Classification:

G09B 3/00

US Classification:

434350000

Abstract:

The present invention provides a computer-implemented method of problem solving that includes graphically displaying a plurality of concepts, dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Other embodiments include: a computer-readable medium having instructions thereon for causing a suitably programmed information-processing apparatus to perform a method of the problem solving that includes graphically displaying a plurality of concepts, displaying dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Still other embodiments include a computerized apparatus that includes a display output unit, a display drive unit that causes a plurality of concepts to be displayed on the display unit, and that causes dynamic links between the concepts to be displayed, and a solution unit that solves a problem based on the displayed concepts and dynamic links, and that displays the solution.

US Patent:

20110111381, May 12, 2011

Filed:

Jan 10, 2011

Appl. No.:

13/004010

Inventors:

Ambar K. Mitra - Ames IA, US
Abhijit Chandra - Ames IA, US
Craig D. Herreman - Tucson AZ, US
Joel P. Dunham - Cascade MT, US
Robert E. Harris - Ankeny IA, US
Dipayan Mitra - Ames IA, US

Assignee:

ACTUS POTENTIA, INC. - Ames IA

International Classification:

G09B 23/08

US Classification:

434302

Abstract:

The present invention provides a computer-implemented method of problem solving that includes graphically displaying a plurality of concepts, dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Other embodiments include: a computer-readable medium having instructions thereon for causing a suitably programmed information-processing apparatus to perform a method of the problem solving that includes graphically displaying a plurality of concepts, displaying dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Still other embodiments include a computerized apparatus that includes a display output unit, a display drive unit that causes a plurality of concepts to be displayed on the display unit, and that causes dynamic links between the concepts to be displayed, and a solution unit that solves a problem based on the displayed concepts and dynamic links, and that displays the solution.

US Patent:

59293390, Jul 27, 1999

Filed:

Feb 25, 1998

Appl. No.:

9/030464

Inventors:

Matthew D. Moore - Dubuque IA
Ambar K. Mitra - Ames IA
J. Adin Mann - Ames IA
Jerald Vogel - Ames IA

Assignee:

Iowa State University Research Foundation, Inc. - Ames IA

International Classification:

G01L 700

US Classification:

73756

Abstract:

A method of measuring dynamic air pressure on a ground surface beneath a lawn mower system which is comprised of a rotatable horizontal blade with a deck unit having a closed top with side walls and an open bottom involves placing the mower on an elevated horizontal platform located in spaced relation to the deck. The blade is then rotated at a speed at which the blade normally would cut grass. Measurements are then made of the air pressure at a plurality of locations adjacent the platform to determine if the air pressure at such locations is such that a blade of grass at each location would be lifted or depressed with respect to the platform. The apparatus for performing the aforesaid method has a horizontal platform with a plurality of apertures therein. The platform is adapted to support a lawn mower deck with a rotatable horizontal blade mounted therein. A plurality of air pressure sensors are mounted in spaced locations on the platform and are located in the lower end of hollow extending tubular pressure taps.

US Patent:

60653477, May 23, 2000

Filed:

Apr 27, 1999

Appl. No.:

9/300706

Inventors:

Matthew D. Moore - Dubuque IA
Ambar K. Mitra - Ames IA
J. Adin Mann - Ames IA
Jerald Vogel - Ames IA

Assignee:

Iowa State University Research Foundation, Inc. - Ames IA

International Classification:

G01L 700

US Classification:

73756

Abstract:

A method of measuring dynamic air pressure on a ground surface beneath a negative air system which is comprised of a rotatable negative air pressure element with a deck unit having a top with side walls and an open bottom involves placing the system on an elevated horizontal platform located in spaced relation to the deck. The system is then made operative. Measurements are then made of the air pressure at a plurality of locations adjacent the platform to determine if the air pressure at such locations is such that predetermined values are met. The apparatus for performing the aforesaid method has a horizontal platform with a plurality of apertures therein. The platform is adapted to support the negative air system. A plurality of air pressure sensors are mounted in spaced locations on the platform and are located in the lower end of hollow extending tubular pressure taps. The sensors are operatively connected to a monitor to permit the dynamic air pressure to be read adjacent each aperture when the operating negative air system is placed on the platform over the apertures.