US2842540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of new cobalamines
Assignee: Olin Corp
•
Filing: 1956-10-01
•
Granted: 1958-07-08
•
Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Perlman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:08
CPC Classifications
C; C07; C07H; C07H23/00; Y; Y10; Y10S; Y10S435/00; Y10S435/801; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 4-BROMO - 6 - METHOXY-BENZIMIDAZOLE-HYDROXO-COBALAMIN AND SALTS THEREOF.
Claim 2
Dependent Claim
16 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 4-BROMO - 6 - METHOXY-BENZIMIDAZOLE-HYDROXO-COBALAMIN AND SALTS THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |