Patent JPS528390A successfully refreshed from Google Patents.
JPS528390A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Method and apparatus for replacing gas in packaging bags
Assignee: Japan Steel Works Ltd
•
Filing: 1975-07-10
•
Granted: —
•
Expires: 1995-07-10
Abstract
Abstract PURPOSE: Gas replacing means of packaging bags by which means deterioration of packed material can be prevented by regulating amount of carbon dioxide gas or the like at will in response to absorbability of the material for said gas. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Shiro Murata
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-09 03:42
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)
JPS5020888A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.