Patent US2177602A successfully refreshed from Google Patents.
Patent DE613678C successfully refreshed from Google Patents.
DE613678C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the production of condensation compounds from urea, formaldehyde and mono- or dimethylamine
Assignee: Individual
•
Filing: 1932-02-07
•
Granted: 1935-05-23
•
Expires: 1952-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-23 18:35
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/043; C08G12/046
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.