Patent US3177208A successfully refreshed from Google Patents.
US3177208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of compounds of the 1, 4-divinylbenzene series
Assignee: BASF SE
•
Filing: 1960-05-12
•
Granted: 1965-04-06
•
Expires: 1980-05-12
Abstract
No abstract record available.
Inventors
- 👤 Stilz Walter
- 👤 Pommer Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:55
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/192; C07B; C07B37/00; C07C; C07C1/00; C07C1/32; C07C1/321; C07C1/324; C07C17/00; C07C17/26; C07C17/263; C07C17/2635; C07C37/00; C07C37/01; C07C37/055; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/86; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/54; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3205; C07F9/3241; C07F9/38; C07F9/40; C07F9/4003; C07F9/4056
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
1,4 - BIS - (4'' - ALPHA - TETRAHYDROFURANYLOXY - 3'' METHOXY-STYRYL)-BENZENE.
Claim 2
Dependent Claim
12 words
1,4 - BIS - (4'' - ALPHA - TETRAHYDROFURANYLOXY - 3'' METHOXY-STYRYL)-BENZENE.
Claim 3
Dependent Claim
19 words
A PROCESS FOR THE PRODUCITON OF COMPOUNDS OF THE 1,4-DIVINYLBENZENE SERIES WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
19 words
A PROCESS FOR THE PRODUCITON OF COMPOUNDS OF THE 1,4-DIVINYLBENZENE SERIES WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA:
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |