November 14, 2011

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 61 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.


Patent Number: US 8049054
Title: Process for the preparation of c5 and/or c6 olefins
Inventor(s): Chewter, Leslie Andrew; Verhaak, Michiel Johannes Franciscus Maria; Van Westrenen, Jeroen
Patent Assignee(s): Shell Internationale Research Maatschappij B.V., Neth.
Source: PCT Int. Appl., 24 pp. CODEN: PIXXD2
Language: English

Process for the preparation of C5 and/or C6 olefins comprises contacting the lower olefin with the oxygenate, in a molar ratio of oxygen-bonded alkyl group to lower olefin of at least 1:1 in the presence of a MTT-type zeolite.

Please note:  In this example, CAS indexed the PCT patent publication WO 2007/135053 as the first published record of the invention. The PCT publication lists Shell Internationale, Hague, Netherlands as the patent assignee. The patent assignee for the U.S. application and granted patent (US 8049054) is Shell Oil Company, Houston, Texas.

View the full-text U.S. patent from USPTO.

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