US3678073A
Expired / Lapsed
US
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N,n{40 -(dihydroxy)ethylenebisnorbornenes
Assignee: Union Carbide Corp
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Filing: 1970-04-09
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Granted: 1972-07-18
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Expires: 1990-04-09
Abstract
Abstract Novel compounds having the formula: WHEREIN R and R'' may be alike or different and are selected from the group consisting of hydrogen and chlorine; and where X, Y, Z and Q may be alike or different and are selected from the group consisting of keto, and alkylene containing one to six carbon atoms.
Inventors
- 👤 George W Borden
- 👤 David J Trecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:02
CPC Classifications
D; D06; D06M; D06M10/00; D06M10/04; D06M10/08; C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/72; C07D209/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3491113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |