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US2419932A
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Arylides of ortho-hydroxy carboxylic acid
Assignee: GAF Chemicals Corp
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Filing: 1944-10-19
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Granted: 1947-04-29
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Expires: 1964-10-19
Abstract
No abstract record available.
Inventors
- 👤 Grimmel Harry Wilhelm
- 👤 Guenther Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/88; C07D307/00; C07D307/77; C07D307/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2210072A
Cited
US2265433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |