US 11,732,680 B2
Evaporative fuel vapor emission control systems
Timothy M. Byrne, North Charleston, SC (US); Laurence H. Hiltzik, Charleston, SC (US); Marta Leon Garcia, Mount Pleasant, SC (US); and Cameron I. Thomson, Charleston, SC (US)
Assigned to INGEVITY SOUTH CAROLINA, LLC, North Charleston, SC (US)
Filed by Ingevity South Carolina, LLC, North Charleston, SC (US)
Filed on Feb. 18, 2021, as Appl. No. 17/178,449.
Application 17/178,449 is a division of application No. 16/888,323, filed on May 29, 2020, granted, now 10,968,870.
Application 16/888,323 is a division of application No. 16/012,637, filed on Jun. 19, 2018, granted, now 10,704,501, issued on Jul. 7, 2020.
Claims priority of provisional application 62/685,174, filed on Jun. 14, 2018.
Claims priority of provisional application 62/521,912, filed on Jun. 19, 2017.
Prior Publication US 2021/0172402 A1, Jun. 10, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 53/02 (2006.01); F02M 25/08 (2006.01); B01D 53/04 (2006.01)
CPC F02M 25/0854 (2013.01) [B01D 53/0415 (2013.01); B01D 53/0438 (2013.01); B01D 2253/102 (2013.01); B01D 2253/104 (2013.01); B01D 2253/106 (2013.01); B01D 2253/108 (2013.01); B01D 2253/11 (2013.01); B01D 2253/1124 (2013.01); B01D 2253/308 (2013.01); B01D 2253/311 (2013.01); B01D 2253/34 (2013.01); B01D 2253/3425 (2013.01); B01D 2257/708 (2013.01); B01D 2257/7022 (2013.01); B01D 2259/40086 (2013.01); B01D 2259/4516 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An adsorbent material comprising:
a particulate activated carbon material having microscopic pores with a diameter of less than about 100 nm, macroscopic pores having a diameter of about 100-100,000 nm, and a ratio of the volume of the macroscopic pores to the volume of the microscopic pores that is greater than about 160%,
wherein the particulate activated carbon material has at least one of (i) a nominal butane working capacity (BWC) of <8 g/dL, (ii) a butane retentivity of less than about 1 g/dL or (iii) a combination of (i) and (ii).