DE868285C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for improving the alkali resistance of keratin fibers
Assignee: Hoechst AG
•
Filing: 1944-08-01
•
Granted: 1953-02-23
•
Expires: 1964-08-01
Abstract
No abstract record available.
Inventors
- 👤 Herbert Dr Bestian
- 👤 Heinrich Dr Greune
- 👤 Johannes Dr Heyna
- 👤 Werner Dr Kirst
- 👤 Joseph Dr Nuesslein
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 13:59
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252
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.