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US3725532A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for removing oxidizable fumes from heated air used to treat textile fibers

Assignee: EIDP Inc
•
Filing: 1970-09-09
•
Granted: 1973-04-03
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Expires: 1990-09-09
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Abstract

Abstract In a process for heat treating textile filamentary structures having a textile finish containing oxidizable components wherein a portion of said components are undesirably vaporized, the improvement for removing at least a portion of said vaporized components comprising directing said components through a gaspermeable structure having an oxidation catalyst for said textile finish in a finely dispersed form on the structure to oxidize said components to a more desirable state at about the same temperature range used to treat the textile structure. Specific oxidation catalysts disclosed are palladium and platinum. The process can operate at extremely high space velocities making the process feasible from an economic viewpoint.

Inventors

  • 👤 H Fernandes
  • 👤 W Walsh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:26
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 16 words
The process as in claim 1, wherein the gas-permeable structure is comprised of activated alumina granules.
Claim 2
Dependent Claim 16 words
The process as in claim 1 is comprised of a ceramic honeycomb coated with activated alumina.

References Cited (Backward Citations)

US2750680A Cited
US3331787A Cited
US3258846A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-02 1976-10-02 1977-04-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-02 1980-10-02 1981-04-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-02 1984-10-02 1985-04-03 $7700.00 Window Closed / Lapsed

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