US2946781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of adenosyl homocysteine
Assignee: Merck and Co Inc
•
Filing: 1957-02-06
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Granted: 1960-07-26
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Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Clifford H Shunk
- 👤 John W Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:13
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE PROCESS FOR MAKING HOMOCYSTEINE, WHICH COMPRISES HYDROLYZING THE REACTION PRODUCT OF 2'',3''ISOPROPYLIDENE-5''-P-TOLUENESULFONYL ADENOSINE AND HOMOCYSTEINE, AND REMOVING ADENOSYL HOMOCYSTEINE FROM THE PRODUCTS OF HYDROLYSIS BY TREATMENT OF THE LATTER WITH AN ANION EXCHANGE SUBSTANCES HAVING A STRONG BASIC FUNCTIONAL GROUP AND ELUTING ADENOSYL HOMOCYSTEINE FROM SAID SUBSTANCE WITH A WEAK ACID.
Claim 2
Dependent Claim
52 words
THE PROCESS FOR MAKING HOMOCYSTEINE, WHICH COMPRISES HYDROLYZING THE REACTION PRODUCT OF 2'',3''ISOPROPYLIDENE-5''-P-TOLUENESULFONYL ADENOSINE AND HOMOCYSTEINE, AND REMOVING ADENOSYL HOMOCYSTEINE FROM THE PRODUCTS OF HYDROLYSIS BY TREATMENT OF THE LATTER WITH AN ANION EXCHANGE SUBSTANCES HAVING A STRONG BASIC FUNCTIONAL GROUP AND ELUTING ADENOSYL HOMOCYSTEINE FROM SAID SUBSTANCE WITH A WEAK ACID.
References Cited (Backward Citations)
US2700038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |