Patent US4305031A successfully refreshed from Google Patents.
JPS5357185A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Improved preserving method for selectively permeable membrane
Assignee: Kuraray Co Ltd
•
Filing: 1976-11-04
•
Granted: —
•
Expires: 1996-11-04
Abstract
Abstract PURPOSE: To prevent contamination of used, selectively permeable membrane with microorganismus by, after taking out of food etc. to be treated, washing the membrane with water and by preserving it in such a state that it is immersed in acid or alkali solution or wetted with those solutions, and by washing it with alkali or acid solution when it is reutilized. COPYRIGHT: (C)1978,JPO&Japio
Inventors
- 👤 Osamu Kusudo
- 👤 Yoshito Hamamoto
- 👤 Hirokuni Tanii
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-30 01:11
CPC Classifications
—
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.