Patent FR40543E successfully refreshed from Google Patents.
FR40543E
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for the desulphurization and refining of hydrocarbons from the high and low temperature distillation of coals, shales, lignites, peat, and ... especially petroleum oils
Assignee: CIE DES MINES DE VICOIGNE NOEU
•
Filing: 1930-12-13
•
Granted: 1932-07-22
•
Expires: 1950-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-07 09:50
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06; C10G29/12
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.