Chemical feeder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 8, 2003
Grant Date -
N/A
app pub date -
Nov 25, 1998
filing date -
Dec 17, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Describes a chemical feeder that supplies treating agents, e.g., calcium hypochlorite, to a liquid stream, e.g., an aqueous stream. The chemical feeder is operated in a substantially flooded condition to provide a useful and safe pressure feeder, and optionally uses cyclonic flow to be relatively self-cleaning. One or more tablet canisters are utilized within the substantially flooded interior of the chemical feeder, and expose the lowermost tablets to the turbulent flow outside of the tablet canister. A substantially uniform chemical distribution rate over tablet life is provided by the chemical feeder.
First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WELLS FARGO CAPITAL FINANCE LLC AS ADMINISTRATIVE AGENT | 1100 ABERNATHY ROAD SUITE 1600 ATLANTA GA 30328 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Ferguson, Richard H | New Martinsville, WV | 19 | 312 |
# of filed Patents : 19 Total Citations : 312 | |||
Pickens, Stanley R | Monroeville, PA | 23 | 256 |
# of filed Patents : 23 Total Citations : 256 | |||
Rice, Paul T | Sewickley, PA | 3 | 43 |
# of filed Patents : 3 Total Citations : 43 |
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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 |
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