E03F 5/08

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
2025/0020,228 DUAL AIR ADMITTANCE VALVE WITH LOCKING MECHANISM AND PRESSURE INDICATORAug 21, 24Jan 16, 25Not available
2024/0052,622 MANHOLE ODOR TREATMENT DEVICEAug 09, 22Feb 15, 24Not available
2021/0317,650 AIR ADMITTANCE VALVEAug 10, 17Oct 14, 21Not available
2021/0071,405 BLOWER AND VENTILATION SYSTEMNov 20, 20Mar 11, 21Tokyo Metropolitan Sewerage Service Corporation; EBISMARINE CORPORATION; EBISTRADE, INC.;
2020/0332,510 METHOD AND DEVICE FOR CONTROLLING VENTILATION AMOUNT WITH RESPECT TO SEALED PIPENov 21, 17Oct 22, 20SCENTEC INC.
2018/0334,791 STEAM VENT SYSTEMMay 16, 17Nov 22, 18Not available
2018/0195,263 METHOD AND SYSTEM FOR ENCAPSULATING A ROTATING BIOLOGICAL CONTACTORJan 06, 17Jul 12, 18Not available
2018/0087,261 BLOWER AND VENTILATING SYSTEMDec 08, 15Mar 29, 18Tokyo Metropolitan Sewerage Service Corporation; EBISMARINE CORPORATION; EBISTRADE, INC.;
2015/0225,938 APPARATUS AND METHOD FOR INCREASING HYDRAULIC CAPACITY OF A GRAVITY SEWERMar 31, 15Aug 13, 15The White Oak Partnership, L.P.
2014/0251,127 METHOD AND DEVICE FOR INFLUENCING THE SMELL WHICH COMES FROM SHAFT OPENINGS OF UNDERGROUND SEWERSOct 05, 12Sep 11, 14Not available
2014/0227,954 BLOWER AND VENTILATION SYSTEMApr 14, 14Aug 14, 14TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, EBISMARINE CORPORATION, EBISTRADE, INC.,
2013/0327,214 APPARATUS AND METHOD FOR INCREASING HYDRAULIC CAPACITY OF A SEWERAug 15, 13Dec 12, 13The White Oak Partnership, L.P.
2013/0065,506 SEPTIC SYSTEM VENT SCREENDec 30, 11Mar 14, 13Not available
2012/0227,168 MANHOLE ODOR ELIMINATORMar 08, 12Sep 13, 12INVENTIVE RESOURCES, INC
2012/0204,333 Pressure equalizing valveSep 07, 10Aug 16, 12Raccords et Plastiques Nicoll
2012/0118,820 Septic System with Pressure Gradient TransportNov 11, 10May 17, 12Not available
2011/0132,824 High Performance Sewer SystemDec 03, 10Jun 09, 11CLEARFORD INDUSTRIES INC.
2009/0044,321 Sewer and septic tank venting deviceAug 17, 07Feb 19, 09Not available
2007/0033,719 Sewer pipe gas exhaust filter apparatusAug 15, 06Feb 15, 07Odor Control Specialties, LLC
2005/0144,708 Spill proof snack bowlDec 24, 04Jul 07, 05Not available