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US3752773A Expired / Lapsed US ⏱️ 0.0 years remaining

Preparation of catalysts

Assignee: Marathon Oil Co
•
Filing: 1969-11-28
•
Granted: 1973-08-14
•
Expires: 1989-11-28
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Abstract

Abstract THIS DISCLOSURE DESCRIBES A METHOD FOR PREPARING CATALYSTS RESISTANT TO ATTRITION OR OTHER TYPES OF PHYSICAL DEGRADATION. THE CATALYSTS ARE FORMED BY BLENDING CATALYST PRECURSORS, SUCH AS METALLIC HYDROXIDES, OXIDES, OR SALTS, OR MIXTURES THEREOF, WITH A CLAY-TALC BINDER, ADDING SUFFICIENT MOISTURE TO RENDER THE MIXTURE PLIANT, FORMING THE PLIANT MIXTURE INTO A SHAPE USEFUL IN A CATALYTIC REACTOR, AND THEN HEATING THE MIXTURE TO HARDEN THE BINDER AND TRANSFORM THE METALLIC OXIDES, HYDROXIDES, AND SALTS TO USEFUL CATALYTIC FORM. A WIDE VARIETY OF CATALYSTS MAY BE PREPARED, USEFUL IN SUCH REACTIONS AS HYDROGENATION, OXYDEHYDROGENATION, DEHYDROHALOGGENATION, OXIDATION, DEALKYLATION, DISPROPORTIONATION, AUTOMOBILE EMISSION CONTROL, ETC.

Inventors

  • 👤 R Duke
  • 👤 L Echelberger

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 00:48
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07C29/145; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J37/00; B01J37/0009; C07C17/00; C07C17/093; C07C17/15; C07C17/152; C07C17/156; C07C5/00; C07C5/42; C07C5/48; C07C7/00; C07C7/148; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/504

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) 1976-08-13 1977-02-12 1977-08-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-13 1981-02-12 1981-08-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-13 1985-02-12 1985-08-14 $7700.00 Window Closed / Lapsed

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