US2938900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methyl 2, 3-isopropylidene-5-keto-l-rhamnofuranoside
Assignee: Merck and Co Inc
•
Filing: 1957-12-26
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Granted: 1960-05-31
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Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Walton Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE PROCESS WHICH COMPRISES REACTING METHYL 2,3ISOPROPYLIDENE - L - RHAMNOFURANOSIDE WITH AN OXIDIZING AGENT TO PRODUCE METHYL 2,3-ISOPROPYLIDENE-5-KETO-LRHAMNOFURANOSIDE.
Claim 2
Dependent Claim
19 words
THE PROCESS WHICH COMPRISES REACTING METHYL 2,3ISOPROPYLIDENE - L - RHAMNOFURANOSIDE WITH AN OXIDIZING AGENT TO PRODUCE METHYL 2,3-ISOPROPYLIDENE-5-KETO-LRHAMNOFURANOSIDE.
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |