Patent US3697835A successfully refreshed from Google Patents.
Patent US3275700A successfully refreshed from Google Patents.
US3275700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkyladamantanes having an ethyl substituent
Assignee: Sunoco Inc
•
Filing: 1964-04-13
•
Granted: 1966-09-27
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Edward J Janoski
- 👤 Robert E Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2718; C07C5/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
METHOD OF PREPARING ALKYADAMANTANES OF THE C12C15 RANGE WHICH HAS AN ETHYL SUBSTITUENT ON THE ADAMANTANE NUCLEUS WHICH COMPRISES CONTACTING A PERHYDROAROMATIC HYDROCARBON HAVING THREE RINGS AND FROM 12 TO 15 CARBON ATOMS AT A TEMPERATURE IN THE RANGE OF 50-200*C. WITH AN HF-BF3 CATALYST, CONTINUNING SUCH CONTACT UNTIL AT LEAST A SUBSTANTIAL PROPORTION OF THE PERHYDROAROMATIC HAS BEEN CONVERTED TO HYDROCARBON PRODUCT HAVING ADAMANTANE STRUCTURE, WHEREBY ALKYADAMANTANE HAVING AN ETHYL SUBSTITUENT IS FORMED, AND STOPPING SUCH CONTACT BEFORE SAID AKYLADAMANTANE HAS MAINLY ISOMERIZED TO POLYMETHYLADAMANTANE.
Claim 2
Dependent Claim
86 words
METHOD OF PREPARING ALKYADAMANTANES OF THE C12C15 RANGE WHICH HAS AN ETHYL SUBSTITUENT ON THE ADAMANTANE NUCLEUS WHICH COMPRISES CONTACTING A PERHYDROAROMATIC HYDROCARBON HAVING THREE RINGS AND FROM 12 TO 15 CARBON ATOMS AT A TEMPERATURE IN THE RANGE OF 50-200*C. WITH AN HF-BF3 CATALYST, CONTINUNING SUCH CONTACT UNTIL AT LEAST A SUBSTANTIAL PROPORTION OF THE PERHYDROAROMATIC HAS BEEN CONVERTED TO HYDROCARBON PRODUCT HAVING ADAMANTANE STRUCTURE, WHEREBY ALKYADAMANTANE HAVING AN ETHYL SUBSTITUENT IS FORMED, AND STOPPING SUCH CONTACT BEFORE SAID AKYLADAMANTANE HAS MAINLY ISOMERIZED TO POLYMETHYLADAMANTANE.
References Cited (Backward Citations)
US2937211A
Cited
US3128316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |