US Patent No: 6,503,758

Number of patents in Portfolio can not be more than 2000

Systems and methods for measuring nitrate levels

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Abstract

The systems and methods described herein relate to the measurement of nitrate levels in a sample of gas, for example, air, exhaust, or other sources of gas. Moreover, the systems and methods described herein are capable of operating using short sample collection periods, permitting rapid data collection and finely time-resolved nitrate monitoring over a span of time. Additionally, ambient nitrate can effectively be distinguished from other airborne particles, such as sulfate and carbon.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PRESIDENT AND FELLOWS OF HARVARD COLLEGECAMBRIDGE, MA1082

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allen, George A Swampscott, MA 6 33
Ding, Yiming Malden, MA 4 2
Koutrakis, Petros Wellesley, MA 14 183

Cited Art

Patent Info (Count) # Cites Year
 
THERMO ENVIRONMENTAL INSTRUMENTS INC. (2)
5,401,468 Dual flow path carbon particulate monitor 12 1994
5,983,732 Integrated collection and vaporization particle chemistry monitoring 11 1998
 
AMETEK, INC. (1)
4,647,777 Selective gas detector 17 1985
 
MELOY LABORATORIES, INC. (1)
4,236,895 Analytical apparatus and method employing purified ozone 20 1979
 
PRESIDENT AND FELLOWS OF HARVARD COLLEGE (1)
5,854,077 Continuous measurement of particulate nitrate 3 1996
 
TRUSTEES OF TUFTS COLLEGE (1)
5,970,804 Methods and apparatus for analysis of complex mixtures 37 1997

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
MORPHO DETECTION, INC. (1)
7,721,588 Systems and methods for detecting particles 0 2007
 
STICHTING ENERGIEONDERZOEK CENTRUM NEDERLAND (1)
7,830,508 Method and assembly for determining soot particles in a gas stream 0 2006

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