Patent US3236898A successfully refreshed from Google Patents.
US3236898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-methyl-2, 5-dimethoxybenzaldehyde
Assignee: Polaroid Corp
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Filing: 1960-04-29
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Granted: 1966-02-22
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Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Adnan A Sayigh
- 👤 Ulrich Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:22
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/52; C07C47/575; C07C45/00; C07C45/27; C07C45/29
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |