Underground ventilation apparatus and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 2020
Grant Date -
Dec 21, 2017
app pub date -
Jan 22, 2016
filing date -
Jan 23, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A ventilation apparatus includes a plurality of tubular conduit sections, each conduit section including a first semi-tubular section and a second semi-tubular section, each semi-tubular section having a cross-sectional profile generally in the form of an open semi-circular annular element, when viewed along a longitudinal axis. Each tubular conduit includes a first engagement formation located at an end of the tubular conduit, and a second engagement formation located at an opposing end of the tubular conduit.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
POLYVENT PTY LTD | SYDNEY NSW 2000 |
International Classification(s)

- 2016 Application Filing Year
- F16L Class
- 1971 Applications Filed
- 1425 Patents Issued To-Date
- 72.30 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Ianni, Joseph | Mount Warrigal, AU | 1 | 1 |
# of filed Patents : 1 Total Citations : 1 |
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Patent Citation Ranking
- 1 Citation Count
- F16L Class
- 55.47 % this patent is cited more than
- 5 Age
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