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Patent US2387366A successfully refreshed from Google Patents.
US2387366A
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Pyrolysis of pyran derivatives
Assignee: Carbide and Carbon Chemicals Corp
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Filing: 1942-01-30
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Granted: 1945-10-23
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Expires: 1962-01-30
Abstract
No abstract record available.
Inventors
- 👤 Walter J Toussaint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:24
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/21; C07C1/00; C07C1/20; C07C1/247; C07C45/00; C07C45/56; C07C45/57; C07C45/60; C07C45/61; C07C45/67; C07C45/673
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-10-22 | 1949-04-23 | 1949-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-22 | 1953-04-23 | 1953-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-22 | 1957-04-23 | 1957-10-23 | $7700.00 | Window Closed / Lapsed |