Patent US3939449A successfully refreshed from Google Patents.
US3227771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolysis of hydrocarbons
Assignee: Individual
•
Filing: 1964-11-09
•
Granted: 1966-01-04
•
Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 John Happel
- 👤 Leonard Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:55
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C10; C10G; C10G2400/00; C10G2400/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCES FOR THE PYROLYSIS OF MIXTURES CONTAINING SUBSTANTIALLY NON-AROMATIC HYDROCARBONS HAVING 2 TO 10 CARBON ATOMS ADMIXED WITH HYDROGEN WHICH COMPRISES HEATING SAID MIXTURE OF HYDROCARBONS AND HYDROGEN WITHIN A SUBSTANTIALLY ISOTHERMAL PYROLYSIS REACTOR ZONE AT A MAXIMUM TEMPERATURE WITHIN SAID REACTION ZONE OF AT LEAST 1450*C. UP TO 2000*C., THE EFFECTIVE SPACE VELOCITY OF SAID MIXTURE THROUGH SAID REACTION ZONE BEING WITHIN THE RANGE 1.0 TO 400 SEC. -1 ATM. -1.
Claim 2
Dependent Claim
73 words
A PROCES FOR THE PYROLYSIS OF MIXTURES CONTAINING SUBSTANTIALLY NON-AROMATIC HYDROCARBONS HAVING 2 TO 10 CARBON ATOMS ADMIXED WITH HYDROGEN WHICH COMPRISES HEATING SAID MIXTURE OF HYDROCARBONS AND HYDROGEN WITHIN A SUBSTANTIALLY ISOTHERMAL PYROLYSIS REACTOR ZONE AT A MAXIMUM TEMPERATURE WITHIN SAID REACTION ZONE OF AT LEAST 1450*C. UP TO 2000*C., THE EFFECTIVE SPACE VELOCITY OF SAID MIXTURE THROUGH SAID REACTION ZONE BEING WITHIN THE RANGE 1.0 TO 400 SEC. -1 ATM. -1.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |