Patent US2715664A successfully refreshed from Google Patents.
Patent US3663635A successfully refreshed from Google Patents.
US3663635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation process and catalysts therefor
Assignee: Individual
•
Filing: 1969-09-05
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Granted: 1972-05-16
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Expires: 1989-09-05
Abstract
Abstract IN THE HYDROGENATION OF UNSATURATED OMPOUNDS SUCH AS OLEFINS, THERE IS PROVIDED A NEW IMPROVED CATALYST. THIS CATALYST IS MADE BY CONTACTING A TRANSITION METAL COMPOUND WITH AN ALUMINUM HYDRIDE OF THE FORMULA: AIHNX3-N OR ME(AIHMX''4-M)P WHEREIN N IS 1 OR 2 M IS 1, 2 OR 3 ME IS A METAL OF GROUP IA OR IIA OF THE PERIODIC TABLE, P IS THE VALANCE OF THE METAL ME, X IS OR, NR2, NHR OR SR, X'' IS R, OR, NR2, NHR OR SR, R, TAKEN SEPARTELY, IS A MONOVALENT HYDROCARBON, AND WHEN TAKEN IN PARIS REPRESENT -A-Z-B-WHEREIN A AND B EACH IS ALKYLENE, AND Z IS ALKYLENE, AND OXYGEN OR SULFUR ATOM, A NH OR N-HYDROCARBYL GROUP OR A POLYVALENT METAL.
Inventors
- 👤 Christian Lassau
- 👤 Robert Stern
- 👤 Lucien Sajus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:01
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C2527/00; C07C2527/06; C07C2527/128; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/22; C07C2601/00; C07C2601/18; C07C2601/20
Claims Analysis
Total Claims: 0
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |