US3544624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing acrylic acid and methacrylic acid
Assignee: Eastman Kodak Co
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Filing: 1967-12-06
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Granted: 1970-12-01
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Expires: 1987-12-06
Abstract
No abstract record available.
Inventors
- 👤 G Charles Anderson
- 👤 Edgar L Mc-Daniel
- 👤 Howard S Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |