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US3784481A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrogenation catalysts containing a transition metal salt and an aluminum hydride compound

Assignee: IFP Energies nouvelles
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Filing: 1971-04-05
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Granted: 1974-01-08
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Expires: 1991-04-05
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Abstract

Abstract IN A PROCESS OF HYDROGENATING AN UNSATURATED ORGANIC COMPOUND CAPABLE OF BEING REDUCED, E.G, OLEFINS, IN THE PRESENCE OF ZIEGLER-TYPE CATALYSTS, SUBSTANTIAL ADVANTAGES ARE OBTAINED BY USING AS THE ORGANO METALLIC REDUCING AGENT AN ALUMINUM HYDRIDE OF THE FORMULA: ALHNX3-N OR ME (ALHMX''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 VALENCE OF THE METAL ME, X IS OR, NR2, NHR OR SR, X'' IS R, OR, NR2, NHR OR SR, R, TAKEN SEPARATELY, IS A MONOVALENT HYDROCARBON, AND WHEN TAKEN IN PAIRS REPRESENTS-A-Z-B-WHEREIN A AND B EACH IS ALKYLENE, AND Z IS ALKYLENE, AND OXYGEN OR SULFUR ATOM, A NH OR N-HYDROCARBY GROUP OR A POLYVALENT METAL.

Inventors

  • 👤 C Lassau
  • 👤 R Stern
  • 👤 L Sajus

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 01:10
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/28; B01J31/30; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/16; B01J31/18; B01J31/1845; B01J31/1875; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/2282; B01J31/2295; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/40; B01J2531/46; B01J2531/80; B01J2531/84; B01J2531/842; B01J2531/845; B01J2531/847; B01J31/223; B01J31/2234; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906

Claims Analysis

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References Cited (Backward Citations)

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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) 1977-01-07 1977-07-09 1978-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-07 1981-07-09 1982-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-07 1985-07-09 1986-01-08 $7700.00 Window Closed / Lapsed

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