US3420632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon black using plasma-heated nitrogen
Assignee: Phillips Petroleum Co
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Filing: 1966-11-18
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Granted: 1969-01-07
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Expires: 1986-11-18
Abstract
No abstract record available.
Inventors
- 👤 Norman W Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:00
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C09C1/485; C01; C01P; C01P2006/00; C01P2006/12; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF MAKING CRABON BLACK COMPRISING CONTACTING AT LEAST ONE AROMATIC HYDROCARBON WITH PLASMAHEATED NITOGEN, SAID NITROGEN BEING AT A TEMPERATURE SUFFICIENTLY HIGH TO PROMOTE FORMATION OF CARBON BLACK, WHEREIN AT LEAST A PORTION OF SAID AROMATIC HYDROCARBON IS COVERED WITH GAS SELECTED FROM NITROGEN, HELIUM, NEON, ARGON, KRYPTON, XENON, AIR, AND MIXTURES THEEOF, BEFORE SAID CONTACTING OCCURS AND WHEREIN A GAS SELECTED FROM NITROGEN, HELIUM, NEON ARGON, KRYPTON, AND XENON, AND MIXTURES THEREOF IS INTRODUCED DOWNSTREAM OF THE REACTION CHAMBER, MOVES HELICALLY UPSTREAM, REVERSES DIRECTION CHAMBER, MOVES HELICALLY UPSTREAM, REVERSES DIRECTION AFTER JOINING SAID AROMATIC HYDROCARBON AND SAID PLASMA-HEATED NITROGEN GAS, AND MOVES DOWNSTREAM THEREWITH.
Claim 2
Independent Claim
107 words
A METHOD OF MAKING CRABON BLACK COMPRISING CONTACTING AT LEAST ONE AROMATIC HYDROCARBON WITH PLASMAHEATED NITOGEN, SAID NITROGEN BEING AT A TEMPERATURE SUFFICIENTLY HIGH TO PROMOTE FORMATION OF CARBON BLACK, WHEREIN AT LEAST A PORTION OF SAID AROMATIC HYDROCARBON IS COVERED WITH GAS SELECTED FROM NITROGEN, HELIUM, NEON, ARGON, KRYPTON, XENON, AIR, AND MIXTURES THEEOF, BEFORE SAID CONTACTING OCCURS AND WHEREIN A GAS SELECTED FROM NITROGEN, HELIUM, NEON ARGON, KRYPTON, AND XENON, AND MIXTURES THEREOF IS INTRODUCED DOWNSTREAM OF THE REACTION CHAMBER, MOVES HELICALLY UPSTREAM, REVERSES DIRECTION CHAMBER, MOVES HELICALLY UPSTREAM, REVERSES DIRECTION AFTER JOINING SAID AROMATIC HYDROCARBON AND SAID PLASMA-HEATED NITROGEN GAS, AND MOVES DOWNSTREAM THEREWITH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |