公开(公告)号：US20220062178A1

公开(公告)日：2022-03-03

申请号：US17525521

申请日：2021-11-12

申请人： RICOH COMPANY, LTD.

发明人： Tadahiko Morinaga ,  Tatsuru Moritani ,  Tatsuki Yamaguchi ,  Masaru Ohgaki ,  Shinji Aoki ,  Yuichi Sato

IPC分类号： A61K9/16 ,  C08G63/06 ,  B01J2/04 ,  B01J2/18

摘要： A particulate poly(lactic-co-glycolic) acid (PLGA) is provided. The particulate PLGA comprises a poly(lactic-co-glycolic) acid (PLGA), and has an average volume-based particle diameter of 80 nm or less and a relative span factor (R.S.F.) satisfying the following formula (1): 0

公开(公告)号：US11654116B2

公开(公告)日：2023-05-23

申请号：US16908940

申请日：2020-06-23

申请人： RICOH COMPANY., LTD.

发明人： Naoki Shiraishi ,  Tatsuru Moritani ,  Yuichi Sato

IPC分类号： A61K9/51 ,  A61K9/00

CPC分类号： A61K9/5153 ,  A61K9/008

摘要： A porous particle, wherein the porous particle has a mass median aerodynamic diameter and a volume average particle diameter that satisfy expression: y≥2x, where x denotes the mass median aerodynamic diameter and y denotes the volume average particle diameter, and the porous particle has a relative span factor (R.S.F) that satisfies expression: 0

公开(公告)号：US11448979B2

公开(公告)日：2022-09-20

申请号：US16361776

申请日：2019-03-22

申请人： Ricoh Company, Ltd.

发明人： Tadahiko Morinaga ,  Tatsuru Moritani ,  Naoki Shiraishi ,  Shinji Aoki ,  Hisayoshi Ohshima ,  Yuichi Sato

IPC分类号： B01J2/18 ,  B01J2/04 ,  B01J4/00 ,  G03G9/08

摘要： A discharge device is provided. The discharge device includes a liquid feed-discharger, and the liquid feed-discharger includes a feed unit configured to feed a liquid and a discharge unit having discharge holes configured to discharge the liquid fed by the feed unit. A ratio (X/Y) of a maximum cross-sectional area X (mm2) to a minimum cross-sectional area Y (mm2) of the liquid feed-discharger in a direction orthogonal to an axial direction of the liquid feed-discharger is from 1 to 5.