Sale of patents
SOLVENTEC offers to transfer ownership of international patents or grant exploitation licences to interested companies.
Our patented methods
Once the transfer of ownership or the granting of licences has been confirmed, SOLVENTEC will provide appropriate training for the personnel who will be carrying out the work, including technical advice and supervision of the initial projects. It will also supply the specific equipment required to perform selective extraction (steam ejectors, perimetral conduits and ATEX gas heaters), as well as any auxiliary support equipment requested. The selective extraction patents for sale are as follows:
System and method for the selective extraction of viscous hydrocarbons from tanks and other containers
International patents were applied for via the PCT (Patent Cooperation Treaty) and were granted in Europe and the main countries of the Americas, Asia and Africa. Application PCT/ES2021/070396 was filed on 2 June 2021, meaning that the granted international patents will remain in force until 2 June 2041. These patents also apply to the cleaning of tanks, pipes and process units.
Method for selective extraction of highly viscous or solidified oils from storage tanks
International patent applications via the PCT will be filed in Europe and in all other countries where it is decided to protect the invention (the PCT currently has 158 contracting states). Application PCT/ES2025/070437 was filed on 15 July 2025, meaning that the granted patents will remain in force until 15 July 2045. The European Patent Office (EPO) has issued a favourable international search report, as the invention meets the requirements of novelty, inventive step and industrial applicability (International Publication: WO/2026/017925, dated 22 January 2026). This invention is characterized by operations that thermally connect the line of the tank used for the selective extraction to the heating coils of the tank or other heating devices installed within it, which extends the scope of the previous invention to tanks containing highly viscous products where it is extremely difficult to lower the fill level sufficiently to enable the necessary opening of their manholes, as occurs in tanks whose heating coils are inoperative due to perforations or in UCO (Used Cooking Oil) tanks with accumulations of practically solidified fats at their bottoms.