Patent US3004856A successfully refreshed from Google Patents.
US3004856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the bleaching of waxes or other wax-like materials by oxidation and the new compositions of matter thus obtained
Assignee: Hoechst AG
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Filing: 1957-02-26
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Granted: 1961-10-17
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Zinnert Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:55
CPC Classifications
C; C11; C11B; C11B11/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A COMPOSITION OF MATTER COMPRISING BLEACHED PRODUCTS OF HOMOGENEOUS MIXTURES OF AN ESTER WAX OF NATURAL ORIGIN AND AN OXIDATION PRODUCT OF ALIPHATIC HYDROCARBONS THAT ARE SOLID AT ROOM TEMPERATURE, WHICH OXIDIATION PRODUCT HAS AN ACID NUMBER BETWEEN 10 AND 80 AND IS CONTAINED IN THE HOMOGENEOUS MIXTURE IN A QUANTITY OF 5 TO 80 PERCENT OF THE WEIGHT OF THIS MIXTURE, SAID BLEACHING HAVING BEEN CARRIED OUT AT A TEMPERATURE OF AT LEAST 90*C. BY MEANS OF CHROMOSULFURIC ACID AND SAID BLEACHED PRODUCTS CONSISTING ESSENTIALLY OF LONG-CHAIN ALIPHATIC CARBOXYLIC ACIDS.
References Cited (Backward Citations)
US1780633A
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US1767886A
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US1690876A
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US1777766A
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US1737975A
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FR713383A
Cited
US1972459A
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FR829021A
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GB696949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |