US3476747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of 1,2-bis(aryl)ethylenes
Assignee: Eastman Kodak Co
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Filing: 1965-10-20
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Granted: 1969-11-04
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hargis
- 👤 Howard S Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62; C07D263/64; C07C; C07C2/00; C07C2/76; C07C2/82; C07C2/84; C07D235/00; C07D235/02; C07D235/04; C07D235/20; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; D; D06; D06L; D06L4/00; D06L4/60; C07C2523/00; C07C2523/16; C07C2523/18; C07C2523/32; C07C2523/34
Claims Analysis
Total Claims: 0
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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) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |