Michael T Freeman

US Patent:

6374006, Apr 16, 2002

Filed:

Mar 19, 1999

Appl. No.:

09/272451

Inventors:

Mohammed N. Islam - Ann Arbor MI
Michael J. Freeman - Canton MI

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

G02B 626

US Classification:

385 15, 385 37, 372 3, 372 6, 372 94, 359334, 359341

Abstract:

The present invention provides a structure for Raman amplification of signals with counter-propagation of signal and pump and wavelength control while permitting broad bandwidth within each Raman order. The broadband optical amplifier of the invention combines Raman amplification with a circulator loop cavity and/or chirped Bragg gratings to achieve bandwidth performance improvements. The beneficial properties of the circulator loop cavity and/or chirped Bragg gratings can also combined with noise dampening property of the Sagnac Raman cavity.

US Patent:

6567430, May 20, 2003

Filed:

Sep 21, 1999

Appl. No.:

09/400414

Inventors:

Mohammed N. Islam - Ann Arbor MI
Michael J. Freeman - Canton MI
Hayden H. Harris - Chelsea MI

Assignee:

Xtera Communications, Inc. - Allen TX
The Regents of the University of Michigan - Ann Arbor MI

International Classification:

H01S 330

US Classification:

372 3, 372 6, 372 94, 372 99

Abstract:

In one embodiment, a Raman oscillator includes at least one laser cavity and a distributed gain fiber positioned in the at least one laser cavity having a single spatial mode over a pumping wavelength to a signal wavelength. The oscillator also includes a coupler adapted to be coupled to a pumping mechanism to pump the distributed gain fiber at the pumping wavelength to obtain an optical signal wherein distributed gain is provided by Raman amplification over at least one cascade order corresponding to the pumping wavelength. A filter is positioned in the at least one laser cavity and has at least one pass band with a transmission peak placed approximately at the at least one cascade order to filter the optical signal to obtain a filtered optical signal having the signal wavelength. The filter has a substantially continuous sinusoidal filter function over at least one period of the filter function.

US Patent:

6618192, Sep 9, 2003

Filed:

May 2, 2001

Appl. No.:

09/847949

Inventors:

Mohammed Islam - Ann Arbor MI
Carl Dewilde - Richardson TX
Michael Freeman - Canton MI

Assignee:

Xtera Communications, Inc. - Allen TX

International Classification:

H01S 300

US Classification:

359334

Abstract:

An amplifier apparatus includes an optical transmission line with a Raman amplification region that provides a pump to signal power conversion efficiency of at least 20%. The Raman amplification region is configured to amplify a signal with multiple wavelengths over at least a 30 nm range of wavelengths. A pump source is coupled to the optical transmission line. An input optical signal is amplified in the Raman amplification region and an output signal is generated that has at least 100 mW more power than the input optical signal.

US Patent:

7513518, Apr 7, 2009

Filed:

Jul 28, 2006

Appl. No.:

11/460691

Inventors:

Jeffrey Mayville - Ypsilanti MI, US
David Boucard - Royal Oak MI, US
Michael Freeman - Allen Park MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

B60R 3/00

US Classification:

280163, 2801641, 280166, 280169, 29619307

Abstract:

A rocker molding-step () for a vehicle body side assembly () includes one or more support brackets (), an elongated molding-step (), a series of fasteners (), and an appliqué (). The fasteners () attach molding-step () and support brackets () to an outboard surface () of vehicle body side assembly (), with the support brackets () sandwiched between the molding-step () and the body side assembly (). The molding-step () has a stepped surface () receiving the fasteners (). The appliqué () is attached to molding-step () and covers the fasteners (). The molding-step () is a single-piece blow-molded construction, which covers the vehicle body side assembly () and provides a foothold.

US Patent:

7535007, May 19, 2009

Filed:

Feb 26, 2008

Appl. No.:

12/037581

Inventors:

Michael J. Freeman - Northville MI, US
Steven Gautieri - Gladstone MO, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

G01N 21/00

US Classification:

250343

Abstract:

A gas sensor usable in harsh environments includes a multiple chamber radiant energy transmission path which extends between a multi-channel emitter and a multi-channel detector. Chamber length and gas selection are establishable using a movable element with an aperture. The element is located between the emitter and the detector on the transmission path. Radiant energy from the emitter is reflected between the emitter and the element, prior to passing through the element to impinge on the detector.

US Patent:

8346381, Jan 1, 2013

Filed:

Oct 20, 2009

Appl. No.:

12/582215

Inventors:

Raja Shekar Sohmshetty - Canton MI, US
Nicholas P. Warrick - Livonia MI, US
Shawn Michael Morgans - Chelsea MI, US
Zhiyong Cedric Xia - Canton MI, US
Michael James Freeman - Allen Park MI, US

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

G06F 19/00

US Classification:

700106, 700 98, 700107

Abstract:

A computer-implemented method for recommending one or more materials used in designing and manufacturing parts may include receiving data from at least three data sources. The data sources may include a sourcing, manufacturing, and design data source. The data source data may be standardized to obtain a collection of data including a dataset of materials for consideration in recommending one or more materials for use in one or more parts. The method may also include receiving optimization metrics and constraints for the dataset of materials. Optimization values for each material based on the dataset of materials and the one or more optimization metrics may be determined. An optimization algorithm on each material may be performed based at least on the optimization values and the constraints to obtain one or more recommended materials from the dataset of materials for use in a design of one or more parts.

US Patent:

61706078, Jan 9, 2001

Filed:

Jul 1, 1998

Appl. No.:

9/108650

Inventors:

Michael J. Freeman - Canton MI
William J. Baker - St. Joseph MO

Assignee:

Altec Industries, Inc. - Birmingham AL

International Classification:

E06C 534
E04G 100

US Classification:

182 18

Abstract:

A warning system for an aerial device which provides an alarm signal when a worker on an aerial work platform is exposed to an electrical hazard. The aerial device has an insulated boom which carries the work platform on its upper end. An electrostatic charge is introduced to all conductive components near the platform. The electrostatic charge is harmless to the worker and dissipates upon contact with an energized power line or grounded object. The absence of charge is then sensed by a warning device which provides an alarm signal.

US Patent:

54035546, Apr 4, 1995

Filed:

Jun 17, 1994

Appl. No.:

8/261752

Inventors:

Michael J. Freeman - Ann Arbor MI

International Classification:

B01L 302

US Classification:

422100

Abstract:

An apparatus for depositing fluids on a thin-layer chromatography plate is disclosed. The apparatus includes a housing for multiple syringes containing chromatography samples. The apparatus also includes an actuator for independently engaging the syringes to release those samples onto the thin-layer chromatography plate. The apparatus further includes a moveable platform for supporting the thin-layer chromatography plate in proximity to the syringes.