公开(公告)号：USD860387S1

公开(公告)日：2019-09-17

申请号：US35504541

申请日：2017-09-05

Applicant: KURITA WATER INDUSTRIES LTD.

Designer： Takashi Iyasu ,  Yuta Ohtsuka ,  Yusuke Matoba ,  Shinya Yamamoto

公开(公告)号：US10765115B2

公开(公告)日：2020-09-08

申请号：US15773623

申请日：2016-03-28

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Takashi Iyasu ,  Yasushi Murano ,  Toshimasa Kato

IPC: A01N25/22 ,  A01N43/80 ,  C02F1/44 ,  C02F1/50 ,  C02F1/76

Abstract: The present invention provides a method for suppressing a decrease in the concentration of an isothiazoline compound, wherein even if an addition concentration of the isothiazoline compound used as an antibacterial agent is low in a water system, the decrease in the concentration thereof can be suppressed so that the residual rate thereof after 24 hours can be raised. The method is carried out in a manner wherein to a water system, an isothiazoline compound is fed with an addition concentration of 0.2 mg/L or more and less than 1 mg/L, and a combined chlorine agent consisting of a chlorine stabilizer and a chlorine-based oxidant is added so as to maintain a concentration thereof at 0.3 mg/L as Cl2 or more and 6 mg/L as Cl2 or less therein.

公开(公告)号：USD908186S1

公开(公告)日：2021-01-19

申请号：US29687213

申请日：2019-04-11

Applicant: KURITA WATER INDUSTRIES LTD.

Designer： Takashi Iyasu ,  Yuta Ohtsuka ,  Yusuke Matoba ,  Shinya Yamamoto