US3275545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofining of microcrystalline wax
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-04-16
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Granted: 1966-09-27
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Expires: 1983-04-16
Abstract
No abstract record available.
Inventors
- 👤 Patrick P Mccall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/42; C10G73/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD OF REFINING A RAW MICROCRYSTALLINE WAX SO THAT IS HAS AT LEAST A 12 TR COLOR CHARACTERISTIC WHICH COMPRISES COMBINING THE SAID RAW MICROCRYSTALLINE WAX IN SUCH WITH A STREAM OF HYDROFINED MICROCRYSTALLINE WAX IN SUCH PROPORTIONS THAT THE CONCENTRATION OF 2 AND 3 CONDENSED RING AROMATICS IN THE COMBINED WAX IS A MAXIMUM OF ABOUT 4% BY WEIGHT, CATALYTICALLY HYDROFINING THE SAID COMBINED WAX FEED CONTAINING A MAXIMUM OF ABOUT 4% OF 2 AND 3 CONDENSED RING AROMATICS, DIVIDING THE HYDROFINED WAX IN TWO PORTIONS, RECYCLING ONE PORTION OF SAID HYDROFINING MICROWAX INTO A STREAM OF THE SAID RAW MICROWAX IN SUCH PROPORTION THAT THE SAID COMBINED STREAM CONTAINS A MAXIMUM OF ABOUT 4% BY WEIGHT OF 2 TO 3 CONDENSED RING AROMATICS, AND RECOVERING THE SAID REMAINING PORTION OF HYDROFINED MICROWAX AS PRODUCT.
Claim 2
Independent Claim
137 words
A METHOD OF REFINING A RAW MICROCRYSTALLINE WAX SO THAT IS HAS AT LEAST A 12 TR COLOR CHARACTERISTIC WHICH COMPRISES COMBINING THE SAID RAW MICROCRYSTALLINE WAX IN SUCH WITH A STREAM OF HYDROFINED MICROCRYSTALLINE WAX IN SUCH PROPORTIONS THAT THE CONCENTRATION OF 2 AND 3 CONDENSED RING AROMATICS IN THE COMBINED WAX IS A MAXIMUM OF ABOUT 4% BY WEIGHT, CATALYTICALLY HYDROFINING THE SAID COMBINED WAX FEED CONTAINING A MAXIMUM OF ABOUT 4% OF 2 AND 3 CONDENSED RING AROMATICS, DIVIDING THE HYDROFINED WAX IN TWO PORTIONS, RECYCLING ONE PORTION OF SAID HYDROFINING MICROWAX INTO A STREAM OF THE SAID RAW MICROWAX IN SUCH PROPORTION THAT THE SAID COMBINED STREAM CONTAINS A MAXIMUM OF ABOUT 4% BY WEIGHT OF 2 TO 3 CONDENSED RING AROMATICS, AND RECOVERING THE SAID REMAINING PORTION OF HYDROFINED MICROWAX AS PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |