US3246056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of low-permeability, highdensity, carbon and graphite bodies
Assignee: GREAT LAKES CARBON Corp
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Filing: 1962-06-25
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Granted: 1966-04-12
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick L Shea
- 👤 Stecker Glenory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/522; C04B35/528; C04B35/532; C04B35/622; C04B35/64; C04B35/645; C04B35/6455; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/42; C04B2235/422; C04B2235/425; C04B2235/60; C04B2235/602; C04B2235/6021; C04B2235/604; C04B2235/65; C04B2235/656; C04B2235/6562; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A METHOD OF PRODUCING A CARBON BODY FROM A CARBONACEOUS PREFORM, A PORTION OF SAID PREFORM BEING CAPABLE OF FUSING AND OF DEVELOPING A PERMANENT CARBON BOND WHEN HEATED; WHICH COMPRISES: (A) SURROUNDING SAID PREFORMED CARBONACEOUS MASS WITH A DEFORMABLE, PRESSURE-TRANSMITTING, FLUID-IMPERMEABLE ENVELOPE; (B) HEAT-TREATING SAID PREFORMED CARBONACEOUS MASS FOR A TIME AND TO A TEMPERATURE SUFFICIENT TO EVOLVE VOLATILES FROM WITHIN SAID MASS WHILE IT IS CONTAINED WITHIN SAID ENVELOPE; AND, (C) BY MEANS OF A FLUID PRESSURE SYSTEM, PROVIDING EXTERNAL PRESSURE ON SAID PRESSURE-TRANSMITTING, FLUIDIMPERMEABLE ENVELOPE, AND INTERNAL GASEOUS PRESSURE WITHIN SAID ENVELOPE WHILE SAID PREFORM IS HEATTREATED, SAID EXTERNAL PRESSURE BEING GREATER THAN SAID INTERNAL PRESSURE DURING AT LEAST A PORTION OF THE HEAT-TREATING STEP RESULTING IN THE APPLICATION BY TRANSMISSION THROUGH THE ENVELOPE OF A MECHANICAL PRESSURE ON SAID PREFORM BEING HEAT-TREATED, SAID INTERNAL GASEOUS PRESSURE BEING PROVIDED FROM A SOURCE INDEPENDENT OF THE EVOLVING VOLATILES, AND SAID INDEPENDENT INTERNAL GASEOUS PRESSURE BEING PROVIDED SO AS TO SUPPRESS THE EVOLUTION OF SAID VOLATILES FROM THE CARBONACEOUS MASS WHILE IT IS HEAT-TREATED.
Claim 2
Independent Claim
175 words
A METHOD OF PRODUCING A CARBON BODY FROM A CARBONACEOUS PREFORM, A PORTION OF SAID PREFORM BEING CAPABLE OF FUSING AND OF DEVELOPING A PERMANENT CARBON BOND WHEN HEATED; WHICH COMPRISES: (A) SURROUNDING SAID PREFORMED CARBONACEOUS MASS WITH A DEFORMABLE, PRESSURE-TRANSMITTING, FLUID-IMPERMEABLE ENVELOPE; (B) HEAT-TREATING SAID PREFORMED CARBONACEOUS MASS FOR A TIME AND TO A TEMPERATURE SUFFICIENT TO EVOLVE VOLATILES FROM WITHIN SAID MASS WHILE IT IS CONTAINED WITHIN SAID ENVELOPE; AND, (C) BY MEANS OF A FLUID PRESSURE SYSTEM, PROVIDING EXTERNAL PRESSURE ON SAID PRESSURE-TRANSMITTING, FLUIDIMPERMEABLE ENVELOPE, AND INTERNAL GASEOUS PRESSURE WITHIN SAID ENVELOPE WHILE SAID PREFORM IS HEATTREATED, SAID EXTERNAL PRESSURE BEING GREATER THAN SAID INTERNAL PRESSURE DURING AT LEAST A PORTION OF THE HEAT-TREATING STEP RESULTING IN THE APPLICATION BY TRANSMISSION THROUGH THE ENVELOPE OF A MECHANICAL PRESSURE ON SAID PREFORM BEING HEAT-TREATED, SAID INTERNAL GASEOUS PRESSURE BEING PROVIDED FROM A SOURCE INDEPENDENT OF THE EVOLVING VOLATILES, AND SAID INDEPENDENT INTERNAL GASEOUS PRESSURE BEING PROVIDED SO AS TO SUPPRESS THE EVOLUTION OF SAID VOLATILES FROM THE CARBONACEOUS MASS WHILE IT IS HEAT-TREATED.
References Cited (Backward Citations)
US2010261A
Cited
US2132831A
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GB876924A
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US3084394A
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |