Patent US3564032A successfully refreshed from Google Patents.
US3564032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the oxidative bleaching of crude montan wax
Assignee: Hoechst AG
•
Filing: 1968-07-29
•
Granted: 1971-02-16
•
Expires: 1988-07-29
Abstract
Abstract CRUDE MONTAN WAX, PARTIALLY DERESINIFIED CRUDE MONTAN WAX AND SAPONIFICATION PRODUCTS OF THE SAID WAXES ARE OXIDATVELY BLEACHED IN POWDERED FORM AT A TEMPERATURE IN THE RANGE OF FROM 10 TO 90* C. WITH GASES CONTAINING OXYGEN AND CATALYTIC AMOUNTS OF DINITROGEN TRIOXIDE OR NITROGEN DIOXIDE.
Inventors
- 👤 Friedrich Zinnert
- 👤 Hans-Georg Kolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:59
CPC Classifications
C; C10; C10G; C10G73/00
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |