MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202647106227 A) filed by Shell Internationale Research Maatschappij B. V. on September 03, 2026, for Dual Layer Mineral Insulated Tube And Method For Heating A Substance.
Inventors include Arora, Dhruv; and Burns, David Booth.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: Implementations of the disclosed subject matter provide a mineral insulated tube. The tube may include: an elongated core on a central axis of the tube, the elongated core comprises: a resistive hollow tube having a bore surrounded by a cylindrical wall made of a metal material having a first resistivity of at least 0.1 µO·m at 20°C. The tube may further include a semi-conducting layer concentrically enveloping the elongated core, comprising a semi-conducting material in electrical contact with the elongated core, and the semi-conducting material may have a first electric bandgap and a second resistivity. The tube may also include an electrically insulating layer concentrically enveloping the semi-conducting layer including a mineral material that has a second electric bandgap and a metallic outer sheath concentrically enveloping the electrically insulating layer. The first electric bandgap of the semi-conducting material may be less than the second electric bandgap of the mineral material.
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