← Back to Patent Explorer
DE57429C Active / In Force DE

Process for the preparation of a brown disazo dye from p-amidoacetanilide and m-phenylenediamine

Assignee: K. OEHLER in Offenbach a. M<
•
Filing: —
•
Granted: —
•
Expires: —
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-26 07:33
CPC Classifications
C; C09; C09B; C09B33/00; C09B33/02; C09B33/06

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