The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Jun. 23, 2020
Applicant:
Ricoh Company., Ltd., Tokyo, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/51 (2006.01); A61K 9/00 (2006.01);
U.S. Cl.
CPC ...
A61K 9/5153 (2013.01); A61K 9/008 (2013.01);
Abstract
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<(R.S.F)≤1.5.