US3756917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fermentation process for the production of erythritol
Assignee: Pfizer Inc
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Filing: 1971-11-12
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Granted: 1973-09-04
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Expires: 1991-11-12
Abstract
Abstract A PROCESS FOR PRODUCING ERYTHRITOL BY AEROBICALLY FERMENTING AN AQUEOUS HYDROCARBON-CONTAINING NUTRIENT MEDIUM WITH A NEW STRAIN OF THE YEAST, CANDIDA LIPOLYTICA.
Inventors
- 👤 J Dezeeuw
- 👤 Iii E Tynan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:12
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/18; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/923
Claims Analysis
Total Claims: 0
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |