David Ryan Simon

US Patent:

20090255674, Oct 15, 2009

Filed:

Apr 15, 2008

Appl. No.:

12/103041

Inventors:

Curtis L. Boney - Houston TX, US
Jason Swaren - Sugar Land TX, US
John Lassek - Katy TX, US
Ricardo Ariza - Conroe TX, US
Desmond E. Rees - Tyler TX, US
David Ryan Simon - Fort Smith AR, US
Michael A. Dardis - Longview TX, US
Darrel P. Davis - Longview TX, US

International Classification:

E21B 33/13

US Classification:

166284, 166192

Abstract:

In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.

US Patent:

20110226479, Sep 22, 2011

Filed:

Jan 27, 2011

Appl. No.:

13/014778

Inventors:

Philipp Tippel - Graz, AT
Elizabeth W.A. Morris - Aberdeen, GB
Curtis L. Boney - Houston TX, US
Jason Swaren - Sugar Land TX, US
John Lassek - Katy TX, US
Ricardo Ariza - Conroe TX, US
Desmond E. Rees - Tyler TX, US
David Ryan Simon - Conroe TX, US
Michael A. Dardis - Richmond TX, US
Darrell P. Davis - Longview TX, US

International Classification:

E21B 43/16

US Classification:

1663051

Abstract:

In downhole treatments in the oilfield, ball sealers seated in perforations may not fully seal and may leak fluid through gaps and asperities between the balls and the perforations. A method is given for improving the sealing of ball sealers in perforations by adding a sealing agent that forms a plug in the gaps and severely restricts or eliminates fluid flow. The sealing agent is preferably degradable or soluble, malleable fibers slightly larger than the gaps. Optionally, the particles may be non-degradable, rigid, of different shapes, and smaller than the gaps but able to bridge them. Mixtures of sealing agents may be used. The sealing agent may be added with the ball sealers, after the ball sealers, or both.

US Patent:

59957387, Nov 30, 1999

Filed:

Nov 12, 1998

Appl. No.:

9/190740

Inventors:

Anthony M. DiGioia - Pittsburgh PA
David A. Simon - Boulder CO
Branislav Jaramaz - Pittsburgh PA
Michael K. Blackwell - Pittsburgh PA
Frederick M. Morgan - Quincy MA
Robert V. O'Toole - Brookline MA
Takeo Kanade - Pittsburgh PA

Assignee:

Carnegie Mellon University - Pittsburgh PA

International Classification:

A61F 232
A61F 234
A61F 236

US Classification:

39550032

Abstract:

Apparatuses and methods are disclosed for determining an implant position for at least one artificial component in a joint and facilitating the implantation thereof. The apparatuses and methods include creating a joint model of a patient's joint into which an artificial component is to be implanted and creating a component model of the artificial component. The joint and artificial component models are used to simulate movement in the patient's joint with the artificial component in a test position. The component model and the joint model are used to calculate a range of motion in the joint for at least one test position based on the simulated motion. An implant position, including angular orientation, in the patient's joint is determined based on a predetermined range of motion and the calculated range of motion. In a preferred embodiment, the implant position can be identified in the joint model and the joint model aligned with the joint by registering positional data from discrete points on the joint with the joint model. Such registration also allows for tracking of the joint during surgical procedures.

US Patent:

49882023, Jan 29, 1991

Filed:

Jun 28, 1989

Appl. No.:

7/372481

Inventors:

Shree K. Nayar - Pittsburgh PA
Arthur C. Sanderson - Williamstown MA
Lee E. Weiss - Pittsburgh PA
David A. Simon - Pittsburgh PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01B 1124

US Classification:

356394

Abstract:

The invention is an automated solder joint inspection system for determining the quality of a specular soldered joint through examination of the shape of the joint surface using a series of point light sources and the associated highlight reflections from the joint surface. The light from point light sources, which is directed toward the solder joint, is reflected in a pattern from the solder joint to an array of light responsive transducers from at least one location. Utilizing the intensity values from the light responsive transducer array, the surface orientation of the solder joint at a number of points is determined. The solder joint is evaluated in one of two ways. In one way, using known surface features of solder joints along with curve fitting techniques, a series of grid maps is mathematically interpreted to reconstruct the solder joint surface. A rule-based system, through comparison with acceptable solder joint surface features, evaluates and classifies the joint for an acceptability determination. In another way the surface orientation is used to generate an Extended Gaussian Image of the joint and the features of this are analyzed.

US Patent:

60028599, Dec 14, 1999

Filed:

Nov 12, 1998

Appl. No.:

9/190893

Inventors:

Anthony M. DiGioia - Pittsburgh PA
David A. Simon - Boulder CO
Branislav Jaramaz - Pittsburgh PA
Michael K. Blackwell - Pittsburgh PA
Frederick M. Morgan - Quincy MA
Robert V. O'Toole - Brookline MA
Takeo Kanade - Pittsburgh PA

Assignee:

Carnegie Mellon University - Pittsburgh PA

International Classification:

A61F 232
A61F 234
A61F 236

US Classification:

39550032

Abstract:

Apparatuses and methods are disclosed for determining an implant position for at least one artificial component in a joint and facilitating the implantation thereof. The apparatuses and methods include creating a joint model of a patient's joint into which an artificial component is to be implanted and creating a component model of the artificial component. The joint and artificial component models are used to stimulate movement in the patient's joint with the artificial component in a test position. The component model and the joint model are used to calculate a range of motion in the joint for at least one test position based on the simulated motion. An implant position, including angular orientation, in the patient's joint is determined based on a predetermined range of motion and the calculated range of motion. In a preferred embodiment, the implant position can be identified in the joint model and the joint model aligned with the joint by registering positional data from discrete points on the joint with the joint model. Such registration also allows for tracking of the joint during surgical procedures.

US Patent:

62054112, Mar 20, 2001

Filed:

Nov 12, 1998

Appl. No.:

9/189914

Inventors:

Anthony M. DiGioia - Pittsburgh PA
David A. Simon - Boulder CO
Branislav Jaramaz - Pittsburgh PA
Michael K. Blackwell - Pittsburgh PA
Frederick M. Morgan - Quincy MA
Robert V. O'Toole - Brookline MA
Takeo Kanade - Pittsburgh PA

Assignee:

Carnegie Mellon University - Pittsburgh PA

International Classification:

A61F 232
A61F 234
A61F 236

US Classification:

703 11

Abstract:

An apparatus for facilitating the implantation of an artificial component in one of a hip joint, a knee joint, a hand and wrist joint, an elbow joint, a shoulder joint, and a foot and ankle joint. The apparatus includes a pre-operative geometric planner and a pre-operative kinematic biomechanical simulator in communication with the pre-operative geometric planner.

US Patent:

58809767, Mar 9, 1999

Filed:

Feb 21, 1997

Appl. No.:

8/803993

Inventors:

Anthony M. DiGioia III - Pittsburgh PA
David A. Simon - Boulder CO
Branislav Jaramaz - Pittsburgh PA
Michael K. Blackwell - Pittsburgh PA
Frederick M. Morgan - Quincy MA
Robert V. O'Toole - Brookline MA
Takeo Kanade - Pittsburgh PA

Assignee:

Carnegie Mellon University - Pittsburgh PA

International Classification:

A61F 232
A61F 234
A61F 236

US Classification:

364578

Abstract:

Apparatuses and methods are disclosed for determining an implant position for at least one artificial component in a joint and facilitating the implantation thereof. The apparatuses and methods include creating a joint model of a patient's joint into which an artificial component is to be implanted and creating a component model of the artificial component. The joint and artificial component models are used to simulate movement in the patient's joint with the artificial component in a test position. The component model and the joint model are used to calculate a range of motion in the joint for at least one test position based on the simulated motion. An implant position, including angular orientation, in the patient's joint is determined based on a predetermined range of motion and the calculated range of motion. In a preferred embodiment, the implant position can be identified in the joint model and the joint model aligned with the joint by registering positional data from discrete points on the joint with the joint model. Such registration also allows for tracking of the joint during surgical procedures.