US2837537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-tetrahydrofuryl-3, 6, 9-nonanetriol trialkanoates
Assignee: Individual
•
Filing: 1957-07-25
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Granted: 1958-06-03
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Expires: 1977-07-25
Abstract
No abstract record available.
Inventors
- 👤 Charles R Russell
- 👤 Lester E Schniepp
- 👤 Louis S Hafner
- 👤 Herbert E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:23
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/10; C07D307/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1-TETRAHYDROFURY-3,6,9,-NONANETRIOL TRIPROPIONATE HAVING THE FORMULA
References Cited (Backward Citations)
DE538387C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |