Patent US2721882A successfully refreshed from Google Patents.
US2721882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halobicycloalkenyl aryl ethers and method of preparation thereof
Assignee: Universal Oil Products Co
•
Filing: 1953-08-07
•
Granted: 1955-10-25
•
Expires: 1973-08-07
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS FOR THE PREPARATION OF A POLYHALOBICYCLOALKENYL ARYL ETHER WHICH COMPRISES REACTING HEXACHLOROCYCLOPENTADIENE AND PHENYL ALLYL ETHER AND RECOVERING THE RESULTING 1,2,3,4,7,7-HEXACHLORO-5-(PHENOXYMETHYL) BICYCLO(2.2.1)-2-HEPTENE.
Claim 2
Dependent Claim
24 words
A PROCESS FOR THE PREPARATION OF A POLYHALOBICYCLOALKENYL ARYL ETHER WHICH COMPRISES REACTING HEXACHLOROCYCLOPENTADIENE AND PHENYL ALLYL ETHER AND RECOVERING THE RESULTING 1,2,3,4,7,7-HEXACHLORO-5-(PHENOXYMETHYL) BICYCLO(2.2.1)-2-HEPTENE.
References Cited (Backward Citations)
US2421597A
Cited
US2606910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |