PVC pipe coupling
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 20, 2011
Grant Date -
Jan 7, 2010
app pub date -
Jul 1, 2008
filing date -
Jul 1, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A threaded coupling for connecting a threaded first connecting drop pipe to a second connecting drop pipe. The coupling has a first female end having an enlarged exterior diameter and an interior diameter defining a lead in section which provides strength to resist lateral forces exerted on the threaded drop pipe connection. Adjacent the lead in section, internal threads are located in the first female end of the coupling. A second female end having an interior diameter substantially the same size as the lead in section of the first female end is located adjacent the internal threads, opposite the first female end. A male connecting end of a first connecting drop pipe having external threads is inserted into the lead in section and screwed into the coupling. A male connecting end of a second connecting drop pipe is coated with an adhesive and inserted into the second female end.
First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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JOHNSON SCREENS INC | 1950 OLD HWY 8 NEW BRIGHTON MN 55112 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Hanna, Thom M | Evergreen, US | 1 | 10 |
# of filed Patents : 1 Total Citations : 10 | |||
Hennemann, Thomas L | Cottage Grove, US | 12 | 167 |
# of filed Patents : 12 Total Citations : 167 | |||
Valliere, James E | Toms River, US | 1 | 10 |
# of filed Patents : 1 Total Citations : 10 |
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Patent Citation Ranking
- 6 Citation Count
- F16L Class
- 5.80 % this patent is cited more than
- 14 Age
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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 |
---|---|---|---|
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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