← Back to Patent Explorer
DE637385C Expired / Lapsed DE ⏱️ 0.0 years remaining

Process for the preparation of 2, 4-dioxo-1, 3, 3-trialkyl- and -1, 3, 3, 6-tetraalkyltetrahydropyridines

Assignee: F Hoffmann La Roche AG
•
Filing: 1935-09-05
•
Granted: 1936-10-27
•
Expires: 1955-09-05
📄 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 2026-11-06 14:23
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/69

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