US3674648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bacterial lamp
Assignee: United States Department of the Navy
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Filing: 1971-02-01
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Granted: 1972-07-04
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Expires: 1991-02-01
Abstract
Abstract A bacterial lamp which produces a blue-green light which is particularly useful to divers to illuminate the immediate environment around them. The lamp comprises two vessels connected by valve means. One vessel is substantially filled with a bacteria culture medium and the other with a suspension of luminous bacteria in a non-nutrient medium. An oxygen bottle is connected by suitable means to the vessel containing the bacterial suspension and in operation gas pressure forces a predetermined amount of the bacterial suspension into the vessel containing the nutrient medium, whereupon the bacteria start to grow and a light output of considerable intensity is produced.
Inventors
- 👤 Giorgio Soli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:41
CPC Classifications
C; C12; C12M; C12M29/00; C12M29/14; C12M21/00; C12M23/00; C12M23/02; C12M41/00; C12M41/30; C12M41/34; F; F21; F21K; F21K2/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
282 words
The lamp in accordance with claim 1 wherein the bacteria is Photobacterium phosphoreum; the suspension comprises the following ingredients: Ingredients Amount Sodium chloride 29.3 gr Magnesium chloride 6.2 gr Sodium sulfate 4.8 gr Calcium chloride 0.7 gr Potassium chloride 0.66 gr Sodium hydrogen carbonate 0.03 gr Potassium bromide 0.01 gr Ferric chloride 0.002 gr Trace element solution 1 ml Distilled water 1000 ml said trace element solution comprising Ingredients Amount Boric acid 600 mg Sodium fluoride 100 mg Lithium nitrate 20 mg Manganese chloride 20 mg Zinc sulfate 5 mg Sodium metavanadate 5 mg Potassium iodide 5 mg Cobalt chloride 1 mg Sodium molybdate 1 mg Copper sulfate 0.5 mg Distilled water 100 ml the nutrient medium comprises Ingredients Amount Sodium chloride 29.3 gr Magnesium chloride 6.2 gr Sodium sulfate 4.8 gr Calcium chloride 0.7 gr Potassium chloride 0.66 gr Sodium hydrogen carbonate 0.03 gr Potassium bromide 0.01 gr Ferric chloride 0.002 gr Peptone 3.0 gr Galactose 1.0 gr Sodium malate 10.0 gr K glycerophosphate 0.2 gr Vitamin solution No. 1 0.1 ml Vitamin solution No. 2 0.2 ml Vitamin solution No. 3 0.1 ml Distilled water 1000 ml said vitamin solution No. 1 comprising Ingredients Amount Thiamin 50 mg Choline 10 mg Nicotinic acid 5 mg Nicotinamide 2 mg Thymine 5 mg Orotic Acid 2 mg P-aminobenzoic acid 2 mg Pyridoxine 1 mg Riboflavin 1 mg Distilled water 100 ml said vitamin solution No. 2 comprising Ingredients Amount Biotin 1 mg Folic acid 1 mg Distilled water 100 ml; and said vitamin solution No. 3 comprising Ingredients Amount Vitamin B12 1 mg Distilled water 100 ml; and 0.1 M sodium hydroxide in sufficient amount to adjust the pH to about 7.5.
Claim 2
Dependent Claim
17 words
The lamp in accordance with claim 2 wherein marble chips cover the bottom of said second vessel.
Claim 3
Dependent Claim
66 words
The lamp in accordance with claim 1 wherein the bacterium is photobacterium phosphoreum, the suspension comprises Ingredients Amount Sodium chloride 29.3 gr Magnesium chloride 6.2 gr Sodium sulfate 4.8 gr Calcium chloride 0.7 gr Potassium chloride 0.66 gr Sodium hydrogen carbonate 0.03 gr Potassium bromide 0.01 gr Ferric chloride 0.002 gr Trace element solution 1 ml Distilled water 1000 ml; and the nutrient medium is agar.
References Cited (Backward Citations)
US3370175A
Cited
US3567586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |