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US3825503A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrogen transfer catalyst

Assignee: Ashland LLC
•
Filing: 1972-06-15
•
Granted: 1974-07-23
•
Expires: 1992-06-15
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Abstract

Abstract A NOVEL CATALYST SYSTEM INCLUDING AN ACTIVE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF NOBEL METALS AND NICKEL; AND PROMOTER SELECTED FROM THE GROUP CONSISTING OF TIN AND LEAD; IF DESIRED, A SECOND PROMOTER SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, SUCH AS POTASSIUM, RUBIDIUM, SECIUM, ETC., A ALKALINE EARTH METAL, SUCH A CALCIUM, STRONTIUM, BARIUM, ETC., AND A RARE EARTH METAL, SUCH AS CERIUM, THROIUM, ETC., AND AN INERT OXIDE SUPPORT, SUCH AS ALUMINA. THE SUBJECT CATALYST CATALYSTS ARE UTILIZED IN THE HYDRODEALKYLATION OF ALKYL AROMATICS, ETC., IN THE DEHYDROGENSTION OF PARAFFINS AND THE LIKE, AND IN THE DEHYDROGENATION-DESULFURIZATION OF SULFUR- AND NITROGEN-COTAMINATED HYDROCARBON MATERIALS.

Inventors

  • 👤 R Patrick
  • 👤 R Kmecak
  • 👤 S Kovach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 00:29
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/628; B01J23/63; C; C07; C07C; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/10; C07C2523/14; C07C2523/38; C07C2523/70; C07C2523/74; C07C2523/755

Claims Analysis

Total Claims: 0
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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) 1977-07-22 1978-01-21 1978-07-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-07-22 1982-01-21 1982-07-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-07-22 1986-01-21 1986-07-23 $7700.00 Window Closed / Lapsed

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