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US3243918A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for propagating photosynthetic microorganisms

Assignee: ROBERT A ERKINS
•
Filing: 1963-03-13
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Granted: 1966-04-05
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Expires: 1983-03-13
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Abstract

No abstract record available.

Inventors

  • 👤 Machiedo Juraj Lauro

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:22
CPC Classifications
A; A01; A01G; A01G33/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 135 words
A METHOD FOR PROPAGATING UNICELLULAR PHOTOSYNTHETIC MICROORGANISMS COMPRISING PRODUCING AN ELONGATED THIN STREAM OF NUTRIENT SUSPENSION CONTAINING SAID MICROORGANISMS, FLOWING SAID STREAM THROUGH AN ILLUMINATED FIELD OF LIGHTING HAVING A WAVE LENGTH BETWEEN 4,000 AND 7,000 ANGSTROM UNITS THEREBY PRODUCING PERCEPTIBLE LIGHTED AND DARK ZONES IN THE SUSPENSION, AGITATING SAID SUSPENSION TO PRODUCE EDDY CURRENTS TO MOVE PORTIONS OF SAID MICROORGANISMS DIRECTLY INTO CONFRONTATION WITH THE LIGHT IN SAID LIGHTED ZONE FOR ABSORPTION OF THE LIGHT ENERGY, AND TO MOVE OTHER PRTIONS AWAY FROM SAID LIGHTED ZONE THEREBY CAUSING A PERIOD OF DARKNESS FOR THE MICROORGANISM TO EFFICIENTLY UTILIZE THE PREVIOUSLY ABSORBED LIGHT ENERGY, THE CMIROORGANISM WHICH IS THE MEANS REPRESENTATIVE OF THE MICROORGANISMS IN SUSPENSION BEING OUTSIDE THE LIGHTED ZINE FOR AT LEAST TEN TIMES AS LONG AS IT IS WITHIN SAID LIGHTED ZONE.
Claim 2
Independent Claim 135 words
A METHOD FOR PROPAGATING UNICELLULAR PHOTOSYNTHETIC MICROORGANISMS COMPRISING PRODUCING AN ELONGATED THIN STREAM OF NUTRIENT SUSPENSION CONTAINING SAID MICROORGANISMS, FLOWING SAID STREAM THROUGH AN ILLUMINATED FIELD OF LIGHTING HAVING A WAVE LENGTH BETWEEN 4,000 AND 7,000 ANGSTROM UNITS THEREBY PRODUCING PERCEPTIBLE LIGHTED AND DARK ZONES IN THE SUSPENSION, AGITATING SAID SUSPENSION TO PRODUCE EDDY CURRENTS TO MOVE PORTIONS OF SAID MICROORGANISMS DIRECTLY INTO CONFRONTATION WITH THE LIGHT IN SAID LIGHTED ZONE FOR ABSORPTION OF THE LIGHT ENERGY, AND TO MOVE OTHER PRTIONS AWAY FROM SAID LIGHTED ZONE THEREBY CAUSING A PERIOD OF DARKNESS FOR THE MICROORGANISM TO EFFICIENTLY UTILIZE THE PREVIOUSLY ABSORBED LIGHT ENERGY, THE CMIROORGANISM WHICH IS THE MEANS REPRESENTATIVE OF THE MICROORGANISMS IN SUSPENSION BEING OUTSIDE THE LIGHTED ZINE FOR AT LEAST TEN TIMES AS LONG AS IT IS WITHIN SAID LIGHTED ZONE.

References Cited (Backward Citations)

US2949700A Cited
US2974044A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-04-04 1969-10-04 1970-04-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-04-04 1973-10-04 1974-04-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-04-04 1977-10-04 1978-04-05 $7700.00 Window Closed / Lapsed

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