US3265635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation catalyst comprising the oxides of copper, chromium, and molybdenum
Assignee: Halcon Research and Development Corp
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Filing: 1963-07-25
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Granted: 1966-08-09
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Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert S Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:08
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8878; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; B01J2523/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A CATALYST ADAPTED FOR THE VAPOR PHASE OXIDATION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF PROPYLENE OR ISOBUTYLENE TO THE CORRESPONDING LOWER ACROLEIN COMPOUND COMPRISING THE OXIDES OF COPPER, MOLYBDENUM AND CHROMIUM, AND A PHOSPHATE, THE PROPORTIONS OF SAID OXIDES BEING SUCH THAT RELATIVE TO A FORMULA WEIGHT OF COPPER AS 1.0, THE FORMULA WEIGHTS OF MOLYBDENUM AND CHROMIUM ARE EACH ABOUT 1.0, THE CATALYST BEING SUPPORTED ON A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, SILICON CARBIDE OR PUMICE, THE AMOUNT OF PHOSPHORUS BEING ABOUT 15% BASED ON THE WEIGHT OF THE FOREGOING OXIDES EXCLUSIVE OF THE SUPPORT, THE WEIGHT RATIO OF SUPPORT TO CATALYST BEING ABOUT 10:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |