US2537647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rearrangement of terpenyl aryl ethers
Assignee: Bridgestone Firestone Inc
•
Filing: 1948-02-21
•
Granted: 1951-01-09
•
Expires: 1968-02-21
Abstract
No abstract record available.
Inventors
- 👤 Leland J Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:47
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C2602/00; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
THE PROCESS OF REARRANGING AN ISOBORNYL ARYL ETHER WHICH COMPRISES HEATING THE SAME IN THE PRESENCE OF AN ACID CATALYST AT A TEMPERATURE OF 70 TO 160* C.
Claim 2
Dependent Claim
28 words
THE PROCESS OF REARRANGING AN ISOBORNYL ARYL ETHER WHICH COMPRISES HEATING THE SAME IN THE PRESENCE OF AN ACID CATALYST AT A TEMPERATURE OF 70 TO 160* C.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |