US2843527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of griseofulvin in low nitrogen level medium
Assignee: Glaxo Laboratories Ltd
•
Filing: 1956-03-26
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Granted: 1958-07-15
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Rhodes Alan
- 👤 Crosse Rodger
- 👤 Ferguson Thomas Primrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:10
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/94; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/933; Y10S435/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A PROCESS FOR THE PRODUCTION OF GRISEOFULVIN BY CULTURING A GRISEOFULVIN-PRODUCING ORGANISM IN A CULTURE MEDIUM WHICH WILL SUPPORT THE GROWTH OF SAID ORGANISM FOR THE PRODUCTION OF GRISEOFULVIN, THE STEP OF CULTURING SAID ORGANISM UNDER SUBMERGED AEROBIC CONDITIONS IN A MEDIUM INCLUDING AN ASSIMILABLE SOURCE OF NITROGEN AT A LEVEL OF 0.04% TO 0.30% OF N, A SOURCE OF CARBON AND ENERGY, AND NUTRIENT SALTS.
Claim 2
Dependent Claim
67 words
IN A PROCESS FOR THE PRODUCTION OF GRISEOFULVIN BY CULTURING A GRISEOFULVIN-PRODUCING ORGANISM IN A CULTURE MEDIUM WHICH WILL SUPPORT THE GROWTH OF SAID ORGANISM FOR THE PRODUCTION OF GRISEOFULVIN, THE STEP OF CULTURING SAID ORGANISM UNDER SUBMERGED AEROBIC CONDITIONS IN A MEDIUM INCLUDING AN ASSIMILABLE SOURCE OF NITROGEN AT A LEVEL OF 0.04% TO 0.30% OF N, A SOURCE OF CARBON AND ENERGY, AND NUTRIENT SALTS.
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) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |