Materials for growing algae and artificial fishing banks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 13, 2001
Grant Date -
N/A
app pub date -
Jul 6, 1999
filing date -
Dec 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Vitreous, algae growing materials, release stably ferrous ions, over long periods of time. The duration of ion release can be controlled as desired by adjusting the particle size of the materials. The vitreous, algae growing, materials can be converted into porous forms or fabricated into at least parts of structures. The vitreous, algae growing, materials consist essentially of 15 to 50 weight percent SiO.sub.2, 1 to 35 weight percent either or both of Na.sub.2 O and K.sub.2 O, 30 to 70 weight percent B.sub.2 O.sub.3, and 1 to 40 weight prercent of either or both of FeO and Fe.sub.2 O.sub.3. Increasing the content of boron facilitates the release of ferrous ions from the vitreous, algae growing, materials.
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