FR2128378B2
Expired / Lapsed
FR
⏱️ 0.0 years remaining
FR2128378B2 - - Google Patents
Assignee: SHELL INT RESEARCH
•
Filing: 1972-02-28
•
Granted: 1977-07-22
•
Expires: 1992-02-28
Abstract
No abstract record available.
Inventors
- 👤 Robert Peter Nielsen
- 👤 Anthon Harold Schroer
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 18:06
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/50; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10
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.