US2789128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkoxydiphenylene bis
Assignee: Columbia Southern Chemical Corp
•
Filing: 1954-01-18
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Granted: 1957-04-16
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Expires: 1974-01-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Tursich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A DIALKOXYDIPHENYLENE BIS-(0-ALKYL CARBAMATE) WHEREIN EACH PHENYL GROUP OF THE DIPHENYLENE RADICAL HAS AN ALKOXY GROUP LINKED TO ONE OF ITS NUCLEAR CARBON ATOMS, SAID ALKOXY GROUPS HAVING UP TO 5 CARBON ATOMS AND SAID ALKYL GROUPS CONTAINING 1 TO 10 CARBON ATOMS.
Claim 2
Dependent Claim
43 words
A DIALKOXYDIPHENYLENE BIS-(0-ALKYL CARBAMATE) WHEREIN EACH PHENYL GROUP OF THE DIPHENYLENE RADICAL HAS AN ALKOXY GROUP LINKED TO ONE OF ITS NUCLEAR CARBON ATOMS, SAID ALKOXY GROUPS HAVING UP TO 5 CARBON ATOMS AND SAID ALKYL GROUPS CONTAINING 1 TO 10 CARBON ATOMS.
References Cited (Backward Citations)
BE506813A
Cited
US2733261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |