Thomas J Chapman

US Patent:

20050098609, May 12, 2005

Filed:

Jan 14, 2002

Appl. No.:

10/467006

Inventors:

Victor Greenhut - Piscataway NJ, US
Thomas Chapman - Corning NY, US

International Classification:

B23K031/02

US Classification:

228122100

Abstract:

A method for directly joining ceramics () and metals (). The method involves forming a structure having a ceramic component (), a more refractory metallic component and a less refractory metallic-material-based interlayer () disposed between the ceramic component () and the metallic component (); adding a eutectic forming reactant to the metallic interlayer (); and heating the structure to approximately a eutectic melting temperature of the reactant and the interlayer to form a metallic-material-based eutectic liquid that interacts with the metallic component to form a bond that directly joins the ceramic and metallic components to one another.

US Patent:

49256068, May 15, 1990

Filed:

Oct 10, 1989

Appl. No.:

7/418592

Inventors:

Peter S. Francis - Wallingford PA
Thomas M. Chapman - Downingtown PA

Assignee:

Arco Chemical Technology, Inc. - Wilmington DE

International Classification:

C08J 908
C08J 936

US Classification:

264 50

Abstract:

The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.

US Patent:

RE341231, Nov 10, 1992

Filed:

Aug 21, 1991

Appl. No.:

7/748314

Inventors:

Peter S. Francis - Wallingford PA
Thomas M. Chapman - Downingtown PA

Assignee:

Arco Chemical Technology, L.P. - Wilmington DE

International Classification:

C08J 908
C08J 936

US Classification:

264 50

Abstract:

The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.

US Patent:

20200113597, Apr 16, 2020

Filed:

Oct 10, 2019

Appl. No.:

16/598159

Inventors:

- South Jordan UT, US
Christopher A. Heine - Schwenksville PA, US
Shaun Lessik - West Chester PA, US
Krista Killion - Philadelphia PA, US
Thomas Chapman - Wilmington DE, US

International Classification:

A61B 17/34
A61M 29/00

Abstract:

Devices used to provide transseptal access are disclosed. The devices may comprise at least one cannula, a needle, and a handle. The cannula and the needle may be configured to be inserted through a dilator while not damaging a lumen wall of the dilator. The handle may be configured to lock the needle in a retracted position. The devices may be configured to telescopically advance the needle through an atrial septum.