Robert C Yen

US Patent:

6780923, Aug 24, 2004

Filed:

Nov 8, 2001

Appl. No.:

10/036707

Inventors:

Probir K. Guha - Troy MI
Michael J. Siwajek - Warren MI
Robert C. Yen - Farmington Hills MI

Assignee:

ThyssenKrupp Budd Company - Troy MI

International Classification:

C08J 300

US Classification:

524539, 523500, 523513, 523527, 524401, 524425, 524443, 524444, 524451, 524460, 524492, 524493, 524494, 525165, 525168

Abstract:

A molding compound contains a reinforcing fiber, a non-fibrous filler, and an unsaturated polyester resin. The unsaturated polyester resin contains an unsaturated monomer as well as a polyester polymer. The polymer is a unsaturated polyester made from a hydroxyl component and a carboxylic component. The hydroxyl component contains both a monomeric diol or triol, and a polymeric polyol. The polymeric polyol is a hydroxyl-terminated polymer such as polyether or polyester diols or triols. The carboxylic component can be provided by an unsaturated carboxylic diacid, an unsaturated carboxylic anhydride, an unsaturated carboxylic diester or mixtures thereof. Molded articles are provided by compression or extrusion molding of a molding compound as described above. The articles are characterized by improved crack resistance, toughness, and surface appearance.

US Patent:

20010031830, Oct 18, 2001

Filed:

Apr 26, 1999

Appl. No.:

09/299351

Inventors:

PROBIR K. GUHA - TROY MI, US
ROBERT C. YEN - FARMINGTON HILLS MI, US

International Classification:

C08F008/30
C08L075/00

US Classification:

525/127000

Abstract:

The present invention provides a blocked polyisocyanate low profile additive comprising an isocyanate terminated urethane prepolymer having an NCO to isocyanate reactive group equivalent ratio of greater than about 1.6/1, a blocking agent with one or more isocyanate reactive groups, and an ethylenically unsaturated monomer.

US Patent:

20050054761, Mar 10, 2005

Filed:

Aug 24, 2004

Appl. No.:

10/925066

Inventors:

Probir Guha - Troy MI, US
Michael Siwajek - Warren MI, US
Robert Yen - Farmington Hills MI, US

International Classification:

C08K003/26
C08K003/34
C08K003/40

US Classification:

524425000, 524445000, 524494000

Abstract:

A molding compound contains a reinforcing fiber, a non-fibrous filler, and an unsaturated polyester resin. The unsaturated polyester resin contains an unsaturated monomer as well as a polyester polymer. The polymer is a unsaturated polyester made from a hydroxyl component and a carboxylic component. The hydroxyl component contains both a monomeric diol or triol, and a polymeric polyol. The polymeric polyol is a hydroxyl-terminated polymer such as polyether or polyester diols or triols. The carboxylic component can be provided by an unsaturated carboxylic diacid, an unsaturated carboxylic anhydride, an unsaturated carboxylic diester or mixtures thereof. Molded articles are provided by compression or extrusion molding of a molding compound as described above. The articles are characterized by improved crack resistance, toughness, and surface appearance.

US Patent:

57518467, May 12, 1998

Filed:

Mar 7, 1994

Appl. No.:

8/207284

Inventors:

Michael John Higgins-Luthman - Livonia MI
Robert Charles Kidd - Ann Arbor MI
Robert Dennis Klein - Farmington MI
Robert Chihsung Yen - Novi MI
Charles Martin Zalinski - Canton MI

Assignee:

Unisys Corporation - Blue Bell PA

International Classification:

G06K 900

US Classification:

382169

Abstract:

A discrete transform image data compression system in which frequency transform coefficients are modified in accordance with a matrix of quantizer values employs a predefined plurality of quantization matrices to adaptively select, on a document-by-document basis, an approximate memory packet size for each document's compressed image data storage by selecting one of the plurality of quantization matrices in accordance with the packet size estimate obtained for each document image. Additionally, the system employs generation of contrast reduction and gray level stretch remapping curves as a function of global image data characteristics, such as a gray level histogram of the document image data. The remapping curves are utilized to preprocess the image data for more effective data compression.

US Patent:

53393686, Aug 16, 1994

Filed:

Nov 21, 1991

Appl. No.:

7/796703

Inventors:

Michael J. Higgins-Luthman - Livonia MI
Robert C. Kidd - Ann Arbor MI
Robert D. Klein - Farmington MI
Robert C. Yen - Novi MI
Charles M. Zalinski - Canton MI

Assignee:

Unisys Corporation - Bluebell PA

International Classification:

G26K 936

US Classification:

382 56

Abstract:

A discrete transform image data compression system in which frequency transform coefficients are modified in accordance with a matrix of quantizer values employs a predefined plurality of quantization matrices to adaptively select, on a document-by-document basis, an approximate memory packet size for each document's compressed image data storage by selecting one of the plurality of quantization matrices in accordance with the packet size estimate obtained for each document image. Additionally, the system employs generation of contrast reduction and gray level stretch remapping curves as a function of global image data characteristics, such as a gray level histogram of the document image data. The remapping curves are utilized to preprocess the image data for more effective data compression.

US Patent:

60019190, Dec 14, 1999

Filed:

Apr 6, 1998

Appl. No.:

9/055675

Inventors:

Robert C. Yen - Farmington Hills MI
Terry L. Ingham - Oxford MI
James A. Bono - Van Wert OH

Assignee:

The Budd Company - Troy MI

International Classification:

C08K 304
C08K 501
C08L 6300
H01B 104

US Classification:

524496

Abstract:

The present invention provides an electrically conductive sheet molding compound composition adapted for electrostatic painting comprising a resin mixture including about 20 to about 60% by weight of thermoplastic resin based on the total weight of said resin mixture, the thermoplastic resin being selected from the group consisting of styrene-butadiene rubber, polystyrene, saturated polyester resin, and mixtures thereof; fibrous reinforcing material; and conductive material. The conductive material is added to the sheet molding compound composition in a sufficient quantity to render an article molded with said composition with structural integrity and electrically conductive enough to be electrostatically painted.