US1716822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making unsaturated aldehyde and the product thereof
Assignee: Winthrop Chemical Co Inc
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Filing: 1927-03-07
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Granted: 1929-06-11
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Expires: 1947-03-07
Abstract
No abstract record available.
Inventors
- 👤 Knorr Angelo
- 👤 Weissenborn Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:30
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/20; C07C47/277; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C47/228; C07C47/232
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) | 1932-06-10 | 1932-12-10 | 1933-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-06-10 | 1936-12-10 | 1937-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-06-10 | 1940-12-10 | 1941-06-11 | $7700.00 | Window Closed / Lapsed |