US3882635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing cells of algae
Assignee: Ajinomoto Co Inc
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Filing: 1974-03-29
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Granted: 1975-05-13
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Expires: 1994-03-29
Abstract
Abstract The newly discovered alga Prototheca sphaerica grows readily on waste water discharged from many plants of the food industry, and compares favorably with Chlorella in its nutritive value.
Inventors
- 👤 Shigeru Yamanaka
- 👤 Koji Mitsugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:42
CPC Classifications
A; A01; A01G; A01G33/00; C; C02; C02F; C02F3/00; C02F3/32; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y02W; Y02W10/00; Y02W10/30; Y02W10/37; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/946
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
A METHOD OF PRODUCING ALGAL CELLS WHICH COMPRISES CULTURING PROTOTHECA SPHAERICA FERM P-1943 IN AN AQUEOUS CULTURE MEDIUM CONTAINING ASSIMILABLE SOURCES OF CARBON AND NITROGEN, INORGANIC SALTS AND MINOR ORGANIC NUTRIENTS UNTIL THE CELLS OF SAID PROTOTHECA SPHAERICA MULTIPLY IN SAID CULTURE MEDIUM, AND RECOVERING THE MULTIPLIED CELLS FROM SAID MEDIUM.
Claim 2
Independent Claim
51 words
A METHOD OF PRODUCING ALGAL CELLS WHICH COMPRISES CULTURING PROTOTHECA SPHAERICA FERM P-1943 IN AN AQUEOUS CULTURE MEDIUM CONTAINING ASSIMILABLE SOURCES OF CARBON AND NITROGEN, INORGANIC SALTS AND MINOR ORGANIC NUTRIENTS UNTIL THE CELLS OF SAID PROTOTHECA SPHAERICA MULTIPLY IN SAID CULTURE MEDIUM, AND RECOVERING THE MULTIPLIED CELLS FROM SAID MEDIUM.
Claim 3
Dependent Claim
31 words
A method as set forth in claim 1, wherein said Prototheca sphaerica is cultured aerobically in said medium in the dark at pH 5 - 9, and at 30* to 37*C.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |