Richard H Atkins

Author:

Richard D. Atkins

ISBN #:

0792334094

US Patent:

8641957, Feb 4, 2014

Filed:

Apr 16, 2007

Appl. No.:

11/735718

Inventors:

Richard P. Atkins - Utica MI, US
Choongyong Kwag - Troy MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B32B 27/04

US Classification:

264294, 264319, 264320

Abstract:

One embodiment of the invention provides a method including molding composite panels that are UV resistant, substantially free of fiber readout, and have visible fibers from epoxy compositions comprising resins having aromatic rings.

US Patent:

20120202137, Aug 9, 2012

Filed:

Feb 4, 2011

Appl. No.:

13/020892

Inventors:

Ingrid A. Rousseau - Clinton Township MI, US
Richard Pryce Atkins - Utica MI, US
William R. Rodgers - Bloomfield Township MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

H01M 4/02
H01M 4/04

US Classification:

429518, 156291

Abstract:

One embodiment includes a bipolar plate assembly with an adhesive bond layer. The bipolar plate assembly is used in a fuel cell stack and includes a first plate and a second plate. The first plate has a first border and the second plate has a second border. The adhesive bond layer is located between the first border and the second border, and is used to mechanically and structurally join the first plate and the second plate together.

US Patent:

44593988, Jul 10, 1984

Filed:

May 27, 1983

Appl. No.:

6/498933

Inventors:

Thomas J. Dearlove - Troy MI
Richard P. Atkins - Rochester MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

C08G 5954

US Classification:

528 1

Abstract:

A one-part epoxy adhesive has been developed that cures rapidly at relatively low elevated temperatures and is based on a diglycidyl ether of bisphenol A (DGEBA), DGBE reacted with glycerol and natural oils, and a unique triple catalyst system of metal imidazole salt, dicyandiamide and a cyclic latent curing agent that liberates diethylenetriamine when heated.

US Patent:

49258869, May 15, 1990

Filed:

Jan 23, 1989

Appl. No.:

7/300401

Inventors:

Richard P. Atkins - Utica MI
Thomas J. Dearlove - Troy MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

C08G 5938
C08G 5942
C08G 5968

US Classification:

523443

Abstract:

A tough, durable, high temperature epoxy tooling composition for making cast-to-size forming tools. The composition comprises a bisphenol-A epoxy, a trifunctional aromatic epoxy, an anhydride catalyst, and an imidazole catalyst. The composition may optionally contain a filler system comprising filler particles having different diameters that are interstitially-matched.

US Patent:

44230940, Dec 27, 1983

Filed:

Nov 12, 1982

Appl. No.:

6/440976

Inventors:

Thomas J. Dearlove - Troy MI
Richard K. Gray - Warren MI
Richard P. Atkins - Rochester MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B05D 302

US Classification:

427386

Abstract:

A method and composition have been developed for providing wear resistant surfaces on tools used to stamp sheet metal. The composition is based on liquid epoxy novolac resin having a functionality greater than two filled with an inorganic powder having very high hardness. The epoxy constituent is cross linked and cured in two stages: it is first cured at room temperature with an aliphatic amine curing agent until it is hardened and is then toughened by an elevated temperature cure initiated by an imidazole curing agent. The composition may be used to cast an entire tool or as a surface coating layer for a less durable base.

US Patent:

54241014, Jun 13, 1995

Filed:

Oct 24, 1994

Appl. No.:

8/327774

Inventors:

Richard P. Atkins - Utica MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B05D 102

US Classification:

427448

Abstract:

A metallized epoxy die formed by depositing boron nitride and iron oxide particle layers on the pattern used to form the die and spraying molten metal onto the particle layers followed by casting the epoxy against the exposed surface of the sprayed metal.

US Patent:

49201611, Apr 24, 1990

Filed:

Jun 24, 1988

Appl. No.:

7/243888

Inventors:

Richard P. Atkins - Utica MI
Elio Eusebi - Troy MI
Thomas J. Dearlove - Troy MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

C08L 6302
C08K 700

US Classification:

523220

Abstract:

A high strength, room temperature curable epoxy tooling compositions containing interstitially-matched filler systems for making cast-to-size forming tools for metal sheet stamping. The composition can be fully cured by at least one aliphatic amine catalyst in twelve hours producing a rigid article having a tensile strength of at least 40 MPa and a compressive strength of at least 100 MPa.

US Patent:

41873483, Feb 5, 1980

Filed:

Jun 21, 1978

Appl. No.:

5/917670

Inventors:

Thomas J. Dearlove - Troy MI
Richard K. Gray - Warren MI
Richard P. Atkins - Royal Oak MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

C08L 6302

US Classification:

428418

Abstract:

In a preferred embodiment, a spreadable, thermosetting automotive body solder is comprised of 100 parts of an epoxy resin adduct of epichlorohydrin and bisphenol A, 25 to 40 parts liquid polysulfide rubber, 0. 02 to 0. 06 moles of an imidazole curing agent substituted in the 2-position with a hydrocarbon group, and a filler system consisting of 5 to 20 parts aluminum powder, 10 to 20 parts ion-exchanged clay, 3 to 6 parts wetting agent for the clay, and 70 to 130 parts fibrous or plate talc average particle size 3 microns or less. The composition is workable for several hours at room temperatures but cures in a few minutes at temperatures over 100. degree. C. The filler system provides the body solder with thixotropic properties at room temperatures, and sag resistance in both the cured and uncured states at temperatures up to 200. degree. C. The solder is corrosion resistant without other additives.