Patent CA-3087464-C (CA)
Inventor: BERUBE PIERRE
IPC: B01D35/16
Filed: 2018-12-24
Granted: 2021-05-18
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY  (PCT) (19) World Intellectual Property Organization International Bureau                                (10) International Publication Number (43) International Publication Date WO 2019/134035 Al 11 July 2019 (11.07.2019)         WIPO I PCT (51) International Patent Classification:                                           (81) Designated States (unless otherwise indicated, for every BO1D 65/02 (2006.01)                                          BO1D 35/16 (2006.01)    kind of national protection available): AE, AG, AL, AM, BO1D 29/62 (2006.01)                                          BO1F 3/04 (2006.01)    AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (21) International Application Number: DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ED, EL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, (22) International Filing Date:                                                     KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 24 December 2018 (24.12.2018)            MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (25) Filing Language:                     English SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (26) Publication Language:                English    TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data:                                                                 (84) Designated States (unless otherwise indicated, for every 62/612,859         02 January 2018 (02.01.2018) US    kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (71) Applicant: THE UNIVERSITY OF BRITISH COLUM-UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, BIA                                       [CA/CA]; University-Industry Liaison Office,    TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 103-6190 Agronomy Road, Vancouver, British Columbia EE, ES, FI, FR, GB, GR, HR, HU, EE, IS, IT, LT, LU, LV, V6T 1Z3 (CA).                                                                       MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (72) Inventor: BERUBE, Pierre; 308-3150 West 4th Avenue, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, Vancouver, British Columbia V6K 1R7 (CA).       KM, ML, MR, NE, SN, TD, TG). (74) Agent: MANNING, Gavin N. et al.; Suite 480 - 601 W.  Cordova Street, Vancouver, British Columbia V6B 1G1 (CA). = (54) Title: METHOD AND APPARATUS FOR PASSIVELY BUBBLING GAS THROUGH LIQUID (57) Abstract: Methods and apparatuses for adding gas bubbles to a tank containing liquid at locations that allow the bubbles to 1*                                                                                   rise to the top of the tank are disclosed. One embodiment com-prises a membrane filtration system connected to a gas source and A a drain. The membrane filtration system draws gas into the sys-tem from the gas in response to a reduced pressure profile created by opening a drain. The gas may be air supplied at atmospheric pressure. -c _c 12a 1. ,re re)                  14 Fig. 1A [Continued on next page]     WO 2019/134035 Al I11111 NMI II lIllIl 11111 11111 011MI I II 111 11111 11111 llH 11111 11111 lH 11111111111 0l 1111 Published: ¨    with international search report (Art. 21(3)) ¨    in black and white; the international application as filed contained color or greyscale and is available for download from PATENTSCOPE