Rohm and Haas, a company involved in business activities for manufacturing of speciality chemicals for end use markets such as building and construction, electronic devices, packaging, household and personal care products, has been recently granted a patent for invention titled “PREPARATION OF PROPANE OXIDATION CATALYSTS”.
The patent has been issued as granted patent number 305311 filed as application number 2919/DELNP/2015 having scope (abstract) of invention as:
“A process for preparing a propane oxidation catalyst , the process comprising pre -calcining a catalyst precursor in a precalcining zone in an oxygen containing gas , then feeding an oxygen -free gas to a purging zone until the gas exiting the zone is substantially free of oxygen, and calcining the pre- calcined precursor to obtain the catalyst.”
The primary independent claim (claim 1) of this patent states:
“A process for preparing a propane oxidation catalyst, the process comprising: (a) preparing a catalyst precursor; (b) pre-calcining the catalyst precursor in a precalcining zone in an oxygen-containing gas at a temperature of less than 330°C to form a pre-calcined precursor; then (c) feeding an oxygen-free gas to the pre-calcined precursor in a purging zone until the gas exiting the purging zone is substantially free of oxygen, wherein the temperature of the purging zone is less than 330°C, and (d) calcining the pre-calcined precursor to obtain the catalyst.”
The patent has been granted under International Patent Classification (IPC) B01J 37/03, B01J 37/08, B01J 27/057, which covers inventions related to:
B01J 37/03 – “Precipitation; Co-precipitation”
B01J 37/08 – “Heat treatment”
B01J 27/057 – “Selenium or tellurium; Compounds thereof”
This patent can be opposed under post-grant patent opposition within 12 months of the date of grant of this patent.
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