FR846480A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for reducing, hydrogenating or refining liquid or fusible hydrocarbons, phenols and asphalts
Assignee: INT HYDROGENEERINGS OCTROOIEN
•
Filing: 1938-11-23
•
Granted: 1939-09-18
•
Expires: 1958-11-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/24; C10G45/28; C10G45/30
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.