US2732662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass culture of algae
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
A; A01; A01G; A01G33/00; C; C12; C12N; C12N1/00; C12N1/12; Y; Y10; Y10S; Y10S435/00; Y10S435/813; Y10S435/8215; Y10S435/946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A PROCESS FOR THE MASS CULTURE OF PHOTOSYNTHETIC MICROORGANISMS, THE STEPS OF EXPOSING AN AQUEOUS MICROORGANISM SUSPESION TO A SOURCE OF LIGHT, THE SUSPENSION HAVING NUTRIENTS IN ITS AQUEOUS MEDIUM, AND MAINTAINING THE SUSPENSION DURING LIGHT EXPOSURE IN THE FORM OF A RECIRCULATING LAYER OR FILM MOVING WITH RESPECT TO SAID SOURCE OF LIGHT AND MEASURING ABOUT ONE CENTIMETER OR LESS OF THICKNESS.
Claim 2
Dependent Claim
64 words
IN A PROCESS FOR THE MASS CULTURE OF PHOTOSYNTHETIC MICROORGANISMS, THE STEPS OF EXPOSING AN AQUEOUS MICROORGANISM SUSPESION TO A SOURCE OF LIGHT, THE SUSPENSION HAVING NUTRIENTS IN ITS AQUEOUS MEDIUM, AND MAINTAINING THE SUSPENSION DURING LIGHT EXPOSURE IN THE FORM OF A RECIRCULATING LAYER OR FILM MOVING WITH RESPECT TO SAID SOURCE OF LIGHT AND MEASURING ABOUT ONE CENTIMETER OR LESS OF THICKNESS.
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) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |