公开(公告)号：US20220121138A1

公开(公告)日：2022-04-21

申请号：US17498113

申请日：2021-10-11

申请人： Tatsumi YAMADA ,  Takuya SUGANUMA ,  Takuya SEKINE ,  Shotaro HOSHI ,  Kazuki YOGOSAWA ,  Yuta YABUTA ,  Tatsuya KUBO ,  Hotaru HASHIKAWA

发明人： Tatsumi YAMADA ,  Takuya SUGANUMA ,  Takuya SEKINE ,  Shotaro HOSHI ,  Kazuki YOGOSAWA ,  Yuta YABUTA ,  Tatsuya KUBO ,  Hotaru HASHIKAWA

IPC分类号： G03G15/08

摘要： A filter includes a sticker and a filter body. The filter body has a smaller weight density per unit volume at a first side than at a second side opposite the first side. The sticker is disposed around a surface of the second side of the filter body.

公开(公告)号：US20220395771A1

公开(公告)日：2022-12-15

申请号：US17830391

申请日：2022-06-02

申请人： Shohtaroh HOSHI ,  Kazuki YOGOSAWA ,  Tatsuya KUBO ,  Yuta YABUTA ,  Hotaru HASHIKAWA ,  Takuya SUGANUMA ,  Takuya SEKINE ,  Tatsumi YAMADA

发明人： Shohtaroh HOSHI ,  Kazuki YOGOSAWA ,  Tatsuya KUBO ,  Yuta YABUTA ,  Hotaru HASHIKAWA ,  Takuya SUGANUMA ,  Takuya SEKINE ,  Tatsumi YAMADA

IPC分类号： B01D46/00 ,  B01D46/10

摘要： A filter holding device includes an opening portion and a filter. The opening portion communicates between an inside and an outside of the filter holding device. The filter is disposed in the opening portion and includes a first side and a second side. The first side is located adjacent to the inside of the filter holding device. The second side is located adjacent to the outside of the filter holding device. The filter has a larger weight density per unit volume at the second side than a weight density per unit volume at the first side and has a larger area of a surface intersecting a communication direction at the second side than an area of a surface intersecting the communication direction at the first side.

公开(公告)号：US20220107605A1

公开(公告)日：2022-04-07

申请号：US17494834

申请日：2021-10-06

申请人： Hotaru HASHIKAWA ,  Tatsuya KUBO ,  Kazuki YOGOSAWA ,  Yuta YABUTA ,  Takuya SUGANUMA

发明人： Hotaru HASHIKAWA ,  Tatsuya KUBO ,  Kazuki YOGOSAWA ,  Yuta YABUTA ,  Takuya SUGANUMA

IPC分类号： G03G21/20 ,  B01D46/00

摘要： A filter holding device includes an opening portion and a filter. The opening portion communicates an inside of the filter holding device with an outside of the filter holding device. The filter includes a first side and a second side. The first side faces the inside of the filter holding device. The second side faces the outside of the filter holding device. The filter has a lower weight density per unit volume at the first side than at the second side. At least a side face of the first side of the filter is covered with an air-impermeable member. The side face is a lateral face of the filter at the first side.

公开(公告)号：US20230330582A1

公开(公告)日：2023-10-19

申请号：US18025406

申请日：2021-09-22

申请人： Yuta YABUTA ,  Kazuki YOGOSAWA ,  Tatsuya KUBO ,  Takuya SUGANUMA ,  Hotaru HASHIKAWA ,  Yoshihiro FUJIWARA

发明人： Yuta YABUTA ,  Kazuki YOGOSAWA ,  Tatsuya KUBO ,  Takuya SUGANUMA ,  Hotaru HASHIKAWA ,  Yoshihiro FUJIWARA

IPC分类号： B01D46/10 ,  G03G21/18

CPC分类号： B01D46/10 ,  G03G21/1814 ,  B01D2275/10

摘要： A filter holding device includes an opening portion and a filter. The opening portion communicates an inside of the filter holding device with an outside of the filter holding device, and has a rim that extends in a communication direction from the inside of the filter holding device toward the outside of the filter holding device. The filter is disposed in the opening portion, and has a first side and a second side. The first side faces the inside of the filter holding device. The second side faces the outside of the filter holding device. The filter has a larger weight density per unit volume at the second side facing the outside of the filter holding device than at the first side facing the inside of the filter holding device in a state in which the filter is disposed in the opening portion.