Patent FR516645A successfully refreshed from Google Patents.
← Back to Patent Explorer
FR516645A Expired / Lapsed FR ⏱️ 0.0 years remaining

Process for the purification or purification of materials containing carbon

Assignee: Individual
•
Filing: 1920-06-07
•
Granted: 1921-04-23
•
Expires: 1940-06-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Walter Edwin Trent

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-09 14:53
CPC Classifications
C; C10; C10L; C10L9/00; B; B01; B01D; B01D21/00; B01D21/01; B01D21/02; B01D21/04; B01D21/06; B01D21/24; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/36; B03B5/38; B03D; B03D1/00; B03D1/02; B03D1/08

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.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag