IP Library › Granted Patent US 7,632,592
Granted Patent B2
US 7,632,592 · App. 10/978,504 · Granted Dec 15, 2009

Method of fabricating corrosion-resistant bipolar plate

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Quick Facts
Patent No.
US 7,632,592
App. No.
10/978,504
Granted
Dec 15, 2009
Kind
B2
Abstract

A method of fabricating a corrosion-resistant and inexpensive bipolar plate for a fuel cell is disclosed. The method includes providing a bipolar plate substrate and coating a corrosion-resistant coating on the bipolar plate substrate using a kinetic spray process.

Claims (2)

1. A method for enhancing corrosion resistance of a bipolar plate, comprising:

providing a bipolar plate substrate having a first corrosion-resistance; and coating a corrosion-resistant coating on said bipolar plate substrate using a kinetic/cold spray process, and wherein the corrosion-resistant coating has a second corrosion-resistance that is greater than the first corrosion-resistance; wherein the bipolar plate includes lands and flow channels to facilitate the flow of reactant and product gasses in the fuel cell.

Assignments (13)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034371/0676 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025780/0936 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025327/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0442 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025311/0770 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0001 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0052 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023127/0468 →
RELEASE OF SECURITY INTEREST Recorded Aug 20, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023124/0429 →
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022553/0446 →
SECURITY AGREEMENT Recorded Feb 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0610 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2009
From: GENERAL MOTORS CORPORATION
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 022102/0533 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 3, 2005
From: VYAS, GAYATRI; ELHAMID, MAHMOUD H. ABD; MIKHAIL, YOUSSEF M.; BLUNK, RICHARD H.
To: GENERAL MOTORS CORPORATION
Reel/Frame 015822/0712 →