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US2606909A
Expired / Lapsed
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Basic dioxolanes
Assignee: University of Michigan (System)
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Filing: 1947-08-01
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Granted: 1952-08-12
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Expires: 1967-08-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Blicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
BASIC DIOXOLANES REPRESENTED BY THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
7 words
BASIC DIOXOLANES REPRESENTED BY THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2445393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |