United States Patent and Trademark Office, Patent Assignment 6431/612:
Assignment Of Assignors Interest.

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Assignor
Assignee

Allen
Paperwork Executed May 22, 1992

Transfer

Recorded
February 22, 1993

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Ethyl Corporation

Ethyl Corporation
451 Florida Blvd.
Baton Rouge, LA 70801

Patents
Correspondent

Removal Of Ethylene From Silane Using A Distillation Step After Separation Using A Zeolite Molecular Sieve

USX0Patent Application No. 07859146, Filed March 27, 1992

USB1Utility Patent No. 5211931, Issued May 18, 1993

Philip M. Pippenger
PATENT & TRADEMARK DIVISION
BATON ROUGE, LA 70801

Updated March 4, 2008

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