公开(公告)号：US09957245B2

公开(公告)日：2018-05-01

申请号：US15320347

申请日：2015-06-29

Applicant: NBC MESHTEC INC.

Inventor： Yoshie Fujimori ,  Tsuruo Nakayama ,  Tomokazu Nagao

IPC: C07D311/00 ,  C07D311/22 ,  B01J23/42 ,  B01J23/44 ,  B01J23/52 ,  B01J23/89 ,  B01J35/00 ,  B01J35/02 ,  C07B61/00

CPC classification number: C07D311/22 ,  B01J23/42 ,  B01J23/44 ,  B01J23/52 ,  B01J23/89 ,  B01J35/0013 ,  B01J35/023 ,  C07B61/00

Abstract: The objective/problem addressed by the present invention is to provide a novel technique pertaining to theaflavins synthesis. The present invention pertains to: a theaflavins synthesis catalyst characterized in having a base comprising an inorganic material, and metal nanoparticles anchored to the base, said particles measuring 0.5-100 nm in diameter; and a theaflavins synthesis method in which the catalyst is used.

公开(公告)号：US11363844B2

公开(公告)日：2022-06-21

申请号：US16332472

申请日：2017-10-13

Applicant: NBC MESHTEC INC.

Inventor： Tetsuya Sato ,  Tomokazu Nagao ,  Tsuruo Nakayama

IPC: A41D13/11 ,  A62B18/02 ,  A62B23/02 ,  A61K33/34 ,  A61K33/38 ,  A62B7/10

Abstract: A mask having an inner surface facing a wearer and an outer surface located opposite to the inner surface has first to fourth filters. The first filter is disposed on the outer surface of the mask and has air permeability and a water absorption capacity of 100% or more and less than 1000%. The second filter is layered on the first filter on the side of the inner surface of the mask and has air permeability and a water absorption capacity of less than 30%. The third filter is layered on the second filter on the side of the inner surface of the mask and is formed of an electret filter having air permeability and a water absorption capacity of less than 50%. The fourth filter is disposed on the inner surface of the mask and has air permeability.