MANHOLE SAFETY GRATINGS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Jul 12, 2012
app pub date -
Jan 10, 2011
filing date -
Jan 10, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Abstract
Systems and methods for making and using manhole safety gratings are described. Each safety grating includes a plate that has a first surface, a second surface, and a perimeter edge that extends between the two surfaces. The plate also defines a plurality of vents that extend between the first surface and the second surface. The plate can have any suitable shape or size that fits within the desired manhole. The plate can comprise any suitable material and be any suitable weight that provides the desired protection to the manhole. The safety gratings can therefore provide temporary safety for the manhole when they are used in place of permanent safety gratings. Other embodiments are described.
First Claim
all claims..Other Claims data not available
Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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CONSOLIDATED EDISON COMPANY OF NEW YORK INC | 4 IRVING PLACE NEW YORK NY 10003 |
International Classification(s)

- 2011 Application Filing Year
- E02D Class
- 241 Applications Filed
- 178 Patents Issued To-Date
- 73.86 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Chin, Toykin | White Plains, US | 2 | 2 |
# of filed Patents : 2 Total Citations : 2 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- E02D Class
- 8.15 % this patent is cited more than
- 13 Age
Forward Cite Landscape
- No Forward Cites to Display

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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