US3246012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L-threo-1, 3-dioxolane
Assignee: LPHIVENS KEMISKE FABRIK VED A
•
Filing: 1964-03-25
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Granted: 1966-04-12
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Feit Peter Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:04
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C07D317/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
AS AN INTERMEDIATE IN THE PRODUCTION OF L-THREITOL1,4-DI(METHANE-SULPHONATE), AN L-THREO-1,3-DIOXOLANE OF THE FORMULA:
Claim 2
Dependent Claim
13 words
AS AN INTERMEDIATE IN THE PRODUCTION OF L-THREITOL1,4-DI(METHANE-SULPHONATE), AN L-THREO-1,3-DIOXOLANE OF THE FORMULA:
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |