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US2292926A
Expired / Lapsed
US
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Preparation of methyltrimethylolmethane
Assignee: EIDP Inc
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Filing: 1938-05-10
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Granted: 1942-08-11
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Expires: 1958-05-10
Abstract
No abstract record available.
Inventors
- 👤 Merlin M Brubaker
- 👤 Ralph A Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C31/00; C07C31/18
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) | 1945-08-10 | 1946-02-09 | 1946-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-10 | 1950-02-09 | 1950-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-10 | 1954-02-09 | 1954-08-11 | $7700.00 | Window Closed / Lapsed |