US3272882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of beta-phenylnaphthalene
Assignee: Sunoco Inc
•
Filing: 1963-12-20
•
Granted: 1966-09-13
•
Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 John J Van Venrooy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
METHOD OF MAKING B-PHENYLNAPHTHALENE WHICH CONSISTS ESSENTIALLY OF TREATING B-CHLOROSTYRENE WITH A NONACIDIC AQUEOUS MEDIUM AT A TEMPERATURE IN THE RANGE OF 225 TO 400*C.
Claim 2
Dependent Claim
25 words
METHOD OF MAKING B-PHENYLNAPHTHALENE WHICH CONSISTS ESSENTIALLY OF TREATING B-CHLOROSTYRENE WITH A NONACIDIC AQUEOUS MEDIUM AT A TEMPERATURE IN THE RANGE OF 225 TO 400*C.
References Cited (Backward Citations)
US3047643A
Cited
US3197518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |