Cryocooler Suitable for Gas Liquefaction Applications, Gas Liquefaction System and Method Comprising the Same

    公开(公告)号:US20210215421A1

    公开(公告)日:2021-07-15

    申请号:US17056171

    申请日:2019-05-17

    Abstract: The present invention relates to a cryocooler suitable for gas liquefaction applications, that comprises a coldhead (1) with one or more refrigeration stages (2, 3); further comprising: a refrigerator compressor (4) for distributing compressed gas-phase cryogen inside the coldhead (1); a heat exchanging coil (9) arranged at least partially around the external region of the coldhead (1); at least one extraction orifice (8) communicating a gas circulation circuit (5) inside the coldhead (1) with the heat exchanging coil (9); acting said extraction orifice/s (8) as pass-through port/s which allow the gas inside the coldhead (1) to flow through the inside of the heat exchanger coil (9) for exchanging heat with the exterior thereof, and wherein the heat exchanging coil (9) is adapted to connect and redirect the gas to one return port (8′) connected to the gas circulation circuit (5). Another object of the invention relates to a cryogen-gas liquefaction system (11) and a method for liquefaction of gases that comprises said system (11).

    Piperidine derivatives for use in the treatment of pancreatic cancer

    公开(公告)号:US10894785B2

    公开(公告)日:2021-01-19

    申请号:US16323473

    申请日:2017-08-04

    Abstract: The present invention relates to novel piperidine derivatives having better cell growth inhibitory activities toward cancer cell cultures and, more particularly, PANC-1 cancer cell cultures than FK866. Accordingly, the present invention relates to compounds of formula I, wherein Ar1 is aryl or heteroaryl, which are optionally substituted by one, two or three substituents selected from lower alkyl; lower alkoxy; formyl; hydroxyl; lower alkyl substituted by lower alkoxy or hydroxyl; A is CnH2n, CnH2n-2 or CnH2n-4, wherein n=4,5,6,7; B is ═N—CN, oxo (═O), thio (═S); D is NH, —CH═CH—; Ar2 is aryl or heteroaryl which are optionally substituted by one, two or three halogen substituents; wherein, if B is oxo (═O), Ar1 and Ar2 are not simultaneously phenyl and pyridine-3-yl; B and D are not simultaneously ═N—CN and —CH═CH—, or a pharmaceutically acceptable salt, a racemic mixture or its corresponding enantiomers and/or optical isomers. The compounds of formula I and their pharmaceutically usable addition salts possess valuable pharmacological properties. Specifically, it has been found that the compounds of the present invention, alone or in combination with other therapeutic active compounds, have an activity as chemotherapeutic agents against cancer and, more particularly, pancreatic cancers.

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