Showa Denko K.K. is known for developing and marketing different chemical products ranging from synthetic resins to ceramics, metals, carbon, and electronic substances. The business regulates a petrochemical complex and also generates petrochemical goods.
Showa Denko K.K. filed a patent application numbered 202017005467 that is titled PRODUCTION METHOD OF ALIPHATIC CARBOXYLIC ACID ESTER. The patent has been filed in the field of Chemicals. This Patent Application has been granted as Patent Number 357211. This invention relates to a method for producing an aliphatic carboxylic acid ester by reacting an aliphatic carboxylic acid having from carbon atoms and an olefin having from carbon atoms in a gas phase by use of a solid acid catalyst.
During the patent examination, the Patent Examiner raised objections under Section 3(d) of the Indian Patents Act, 1970 (as amended). It was pointed out that the subject matter of the claims involves nothing but a use of a known method for producing aliphatic carboxylic esters without employing any new reactant or forming any new product.
As a response, the Applicant submitted that the invention discloses the method of production of aliphatic carboxylic esters using the solid acid catalyst which is supported on a silica carrier. Such a support silica carrier is obtained by kneading fumed silica, silica gel, and colloidal silica. None of the cited documents discloses the use of such silica support carrier as disclosed in the invention.
Advocate Rahul Dev is a Patent Attorney & International Business Lawyer practicing Technology, Intellectual Property & Corporate Laws. He is reachable at rd (at) patentbusinesslawyer (dot) com & @rdpatentlawyer on Twitter.
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