Patent US2156985A successfully refreshed from Google Patents.
US3213082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobamide derivatives
Assignee: Glaxo Group Ltd
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Filing: 1962-11-23
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Granted: 1965-10-19
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Smith Ernest Lester
- 👤 Mervyn Leonard
- 👤 Clark Victor Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:08
CPC Classifications
C; C07; C07H; C07H23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A COBAMIDE DERIVATIVE HAVING THE GROUP R ATTACHED TO THE CENTRAL COBALT ATOM THEREOF BY CARBON-COBALT AND SULFUR-COBALT LINKAGES WHERE R IS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKYL SUBSTITUTED WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOCYCLIC ARYL, NITROGEN-CONTAINING HETEROCYCLE, OXYGEN-CONTAINING HETEROCYCLE, NITROGEN AND OXYGEN-CONTAINING HETEROCYCLE, HYDROXYL AND CARBOXYL; LOWER ALKOXY, LOWER ALKYLTHIO, LOWER ALKANOYL, BENZOYL, LOWER ALKYL-SULFONYL, MONOCYCLIC ARYL-SULFONYL AND MONOCYCLIC LOWER ARALKYL-SULFONYL, SAID COBALT ATOM BEING ATTACHED IN ADDITION ONLY TO THE HETEROCYCLIC NITROGEN ATOMS OF THE COBAMIDE MOLECULE AND WHEN THE NITROGEN AND OXYGEN-CONTAINING HETEROCYCLE SPECIES OF R IS CO-5''-DEOXYADENOSYL, SAID COBAMIDE IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B12 CARBOXYLIC ACID AND ANILIDES, ESTERS AND LACTAMS THEREOF.
Claim 2
Dependent Claim
122 words
A COBAMIDE DERIVATIVE HAVING THE GROUP R ATTACHED TO THE CENTRAL COBALT ATOM THEREOF BY CARBON-COBALT AND SULFUR-COBALT LINKAGES WHERE R IS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKYL SUBSTITUTED WITH AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOCYCLIC ARYL, NITROGEN-CONTAINING HETEROCYCLE, OXYGEN-CONTAINING HETEROCYCLE, NITROGEN AND OXYGEN-CONTAINING HETEROCYCLE, HYDROXYL AND CARBOXYL; LOWER ALKOXY, LOWER ALKYLTHIO, LOWER ALKANOYL, BENZOYL, LOWER ALKYL-SULFONYL, MONOCYCLIC ARYL-SULFONYL AND MONOCYCLIC LOWER ARALKYL-SULFONYL, SAID COBALT ATOM BEING ATTACHED IN ADDITION ONLY TO THE HETEROCYCLIC NITROGEN ATOMS OF THE COBAMIDE MOLECULE AND WHEN THE NITROGEN AND OXYGEN-CONTAINING HETEROCYCLE SPECIES OF R IS CO-5''-DEOXYADENOSYL, SAID COBAMIDE IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF VITAMIN B12 CARBOXYLIC ACID AND ANILIDES, ESTERS AND LACTAMS THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |