Air purifier
Number of patents in Portfolio can not be more than 2000
United States of America Design
Stats
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Nov 30, 1982
Grant Date -
N/A
app pub date -
Jul 24, 1980
filing date -
Jul 24, 1980
priority date (Note) -
Expired
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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VAPORTEK INC A CORP OF WI | 7670 NORTH PORT WASHINGTON ROAD MILWAUKEE WI 53217 |
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Lynch, Jr Patrick E | Carson City, NV | 4 | 125 |
# of filed Patents : 4 Total Citations : 125 | |||
Wimsatt, James M | Carson City, NV | 5 | 137 |
# of filed Patents : 5 Total Citations : 137 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text
US Patent Application No: 2024/0132,980
METHOD AND APPARATUS FOR THE TREATMENT OF BLACK SLAG
Abstract
A method for the treatment of black slag, which contains lime (CaO) or lime-based compounds, and which is generated in an electric furnace that produces steel from scrap, includes indirectly cooling the black slag immediately after the black slag exits from the electric furnace or after collection of the black slag in a cauldron, for a period of time between about 10 minutes and about 45 minutes.
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