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US3444647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of cultivating algae
Assignee: Individual
•
Filing: 1967-11-20
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Granted: 1969-05-20
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Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Masahito Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/32; A; A01; A01G; A01G33/00; Y; Y02; Y02A; Y02A40/00; Y02A40/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
8-9.0. THE MEDIUM MAY BE AERATED, PREFERABLY WITH CO2-CONTAINING AIR, WHEREBY THE CO2 CONSTITUTES AN AUXILIARY CARBON SOURCE AND MIXOTROPHIC PHOTOASSIMILATION TAKES PLACE. THE CULTURE MEDIUM MAY BE OBTAINED BY ANAEROBICALLY FERMENTING ORGANIC WASTE TO FORM A FERMENT LIQUOR CONTAINING LOWER FATTY ACID. THE FERMENTATION MUST BE INTERRUPTED BEFORE METHANE FERMENTATION SETS IN TO AVOID DIGESTION.
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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |