US3050453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation process
Assignee: Shell USA Inc
•
Filing: 1956-11-19
•
Granted: 1962-08-21
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Handschy John
- 👤 Robert J Gordon
- 👤 Robert J Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:03
CPC Classifications
C; C07; C07C; C07C2/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR PRODUCING ALKYL AROMATIC HYDROCARBONS WHICH COMPRISES EXPOSING A LIQUID MIXTURE CONTAINING AT LEAST ONE MOLE PERCENT OF AN ALKYL NAPHTHALENE AND A SATURATED ALIPHATIC HYDROCARBON HAVING AT LEAST 10 CARBON ATOMS PER MOLECULE TO A GAMMA RADIATION DOSAGE OF 5 X 10 8 ROENTGENS, SAID RADIATION HAVING AN ENERGY OF AT LEAST ABOUT 1,000 ELECTRON VOLTS.
Claim 2
Dependent Claim
59 words
A PROCESS FOR PRODUCING ALKYL AROMATIC HYDROCARBONS WHICH COMPRISES EXPOSING A LIQUID MIXTURE CONTAINING AT LEAST ONE MOLE PERCENT OF AN ALKYL NAPHTHALENE AND A SATURATED ALIPHATIC HYDROCARBON HAVING AT LEAST 10 CARBON ATOMS PER MOLECULE TO A GAMMA RADIATION DOSAGE OF 5 X 10 8 ROENTGENS, SAID RADIATION HAVING AN ENERGY OF AT LEAST ABOUT 1,000 ELECTRON VOLTS.
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |