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US3084394A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making carbon articles

Assignee: Individual
•
Filing: 1960-11-15
•
Granted: 1963-04-09
•
Expires: 1980-11-15
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Abstract

No abstract record available.

Inventors

  • 👤 Bickerdike Robert Lewis
  • 👤 Hughes Garyth

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:02
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C01; C01B; C01B32/00; C04B35/528; C04B35/532; C04B2235/00; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/96; Y; Y10; Y10T; Y10T428/00; Y10T428/30

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 176 words
A PROCESS FOR PRODUCING A CARBON ARTICLE OF HIGH DENSITY COMPRISING MIXING FINELY DIVIDED CARBON POWDER HAVING A PARTICLE SIZE LESS THAN 300 MESH WITH A POLYMERIZABLE LIQUID RESIN BINDER, DRYING THE FORMED MIXTURE SUFFICIENT TO REMOVE THE LIQUID THEREFROM BUT INSUFFICIENT TO EFFECT A COMPLETE POLYMERIZATION OF THE RESIN, PULVERIZING THE DRIED MIXTURE TO A FINELY DIVIDED STATE HAVING A PARTICLE SIZE LESS THAN 300 MESH, CHARGING MOULD MEANS WITH SAID PULVERIZED DRIED MIXTURE, HEATING SAID MOULD MEANS TO A TEMPERATURE SUFFICIENT TO EFFECT A POLYMERIZATION OF THE RESIN AND TO PRODUCED A UNITARY, FORMED, CARBON ARTICLE, SUBJECTING SAID FORMED CARBON ARTICLE TO AN ELEVATED TEMPERATURE SUFFICIENT TO EFFECT A CARBONIZATION THEREOF TO PRODUCE A UNITARY, POROUS CARBON ARTICLE HAVING PORES OF SIMILAR SIZE TO THE PARTICLES UNIFORMLY DISTRIBUTED THROUGHOUT, CONTACTING THE CARBONIZED ARTICLE WITH A MOVING STREAM OF CARBON-DEPOSITING GAS AT A TEMPERATURE IN THE RANGE 500-1500*C. AND A PRESSURE IN THE RANGE SUB-ATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO DEPOSIT CARBON THROUGHOUT SAID PORES THEREBY PRODUCING A UNITARY, FORMED, CARBON ARTICLE OF HIGH DENSITY.
Claim 2
Dependent Claim 176 words
A PROCESS FOR PRODUCING A CARBON ARTICLE OF HIGH DENSITY COMPRISING MIXING FINELY DIVIDED CARBON POWDER HAVING A PARTICLE SIZE LESS THAN 300 MESH WITH A POLYMERIZABLE LIQUID RESIN BINDER, DRYING THE FORMED MIXTURE SUFFICIENT TO REMOVE THE LIQUID THEREFROM BUT INSUFFICIENT TO EFFECT A COMPLETE POLYMERIZATION OF THE RESIN, PULVERIZING THE DRIED MIXTURE TO A FINELY DIVIDED STATE HAVING A PARTICLE SIZE LESS THAN 300 MESH, CHARGING MOULD MEANS WITH SAID PULVERIZED DRIED MIXTURE, HEATING SAID MOULD MEANS TO A TEMPERATURE SUFFICIENT TO EFFECT A POLYMERIZATION OF THE RESIN AND TO PRODUCED A UNITARY, FORMED, CARBON ARTICLE, SUBJECTING SAID FORMED CARBON ARTICLE TO AN ELEVATED TEMPERATURE SUFFICIENT TO EFFECT A CARBONIZATION THEREOF TO PRODUCE A UNITARY, POROUS CARBON ARTICLE HAVING PORES OF SIMILAR SIZE TO THE PARTICLES UNIFORMLY DISTRIBUTED THROUGHOUT, CONTACTING THE CARBONIZED ARTICLE WITH A MOVING STREAM OF CARBON-DEPOSITING GAS AT A TEMPERATURE IN THE RANGE 500-1500*C. AND A PRESSURE IN THE RANGE SUB-ATMOSPHERIC TO JUST ABOVE ATMOSPHERIC TO DEPOSIT CARBON THROUGHOUT SAID PORES THEREBY PRODUCING A UNITARY, FORMED, CARBON ARTICLE OF HIGH DENSITY.

References Cited (Backward Citations)

GB550379A Cited
US2392682A Cited
US2719779A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-04-08 1966-10-08 1967-04-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-04-08 1970-10-08 1971-04-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-04-08 1974-10-08 1975-04-09 $7700.00 Window Closed / Lapsed

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