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US2324935A
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Process for polymerizing derivatives of methacrylic acid
Assignee: Rohm and Haas Co
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Filing: 1939-05-13
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Granted: 1943-07-20
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Expires: 1959-05-13
Abstract
No abstract record available.
Inventors
- 👤 Carl T Kautter
- 👤 Trommsdorff Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:00
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12
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) | 1946-07-19 | 1947-01-18 | 1947-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-19 | 1951-01-18 | 1951-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-19 | 1955-01-18 | 1955-07-20 | $7700.00 | Window Closed / Lapsed |