Patent US3865545A successfully refreshed from Google Patents.
Patent CH215947A successfully refreshed from Google Patents.
← Back to Patent Explorer
CH215947A Expired / Lapsed CH ⏱️ 0.0 years remaining

Process for the preparation of a new phthalocyaninesulfonium derivative.

Assignee: Ici Ltd
•
Filing: 1940-02-17
•
Granted: —
•
Expires: 1960-02-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Limited Imperial Ch Industries

Bibliographic Details

Application Number —
Jurisdiction CH
Data Source google_patents
Last Synchronized 2026-11-04 15:24
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/32; C09B47/08

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