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:
Jun. 05, 1990
Filed:
Nov. 02, 1987
Applicant:
Inventor:
Tokuji Yamamoto, Kyoto, JP;
Assignees:
Kyoritsu Glass Mfg., Co., Ltd., Osaka, JP;
Mitsubishi Rayon Engineering Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01N / ;
U.S. Cl.
CPC ...
71 67 ; 514 63 ; 514 64 ; 514495 ; 71 97 ; 71DI / ;
Abstract
This invention relates to a water soluble agent including a water soluble glass containing monovalent silver ions in its glass component. In water or an aqueous solution, the water soluble glass of the invention is capable of releasing the monovalent silver ions as required in an effective amount over a long period, the monovalent silver ions excelling, for example, in eliminating or preventing the occurrence of aquatic bacteria or other aquatic life forms, sterilizing them, preventing the occurrence of algae, and preventing water contamination.