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William T. Welch
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Ashland, KY, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for analysis of relative levels of biodiesel i...
Patent number
7,404,411
Issue date
Jul 29, 2008
Marathon Ashland Petroleum LLC
William T. Welch
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Gasoline RFG analysis by a spectrometer
Patent number
6,140,647
Issue date
Oct 31, 2000
Marathon Ashland Petroleum
William T Welch
G01 - MEASURING TESTING
Information
Patent Grant
Process for analysis of asphaltene content in hydrocarbon mixtures...
Patent number
6,087,662
Issue date
Jul 11, 2000
Marathon Ashland Petroleum LLC
Brian K. Wilt
G01 - MEASURING TESTING
Information
Patent Grant
Process and apparatus for octane numbers and reid vapor pressure by...
Patent number
5,892,228
Issue date
Apr 6, 1999
Ashland Inc.
John B Cooper
G01 - MEASURING TESTING
Information
Patent Grant
Distributed bragg reflector diode laser for Raman excitation and me...
Patent number
5,856,869
Issue date
Jan 5, 1999
Ashland Inc.
John B Cooper
G01 - MEASURING TESTING
Information
Patent Grant
Process and apparatus for analysis of hydrocarbon species by near i...
Patent number
5,712,481
Issue date
Jan 27, 1998
Ashland Inc.
William T. Welch
G01 - MEASURING TESTING
Information
Patent Grant
Hydrocarbon analysis and control by raman spectroscopy
Patent number
5,684,580
Issue date
Nov 4, 1997
Ashland Inc.
John B. Cooper
G01 - MEASURING TESTING
Information
Patent Grant
Oxygenate analysis and control by Raman spectroscopy
Patent number
5,596,196
Issue date
Jan 21, 1997
Ashland Inc.
John B. Cooper
G01 - MEASURING TESTING
Information
Patent Grant
Determination of aromatics in hydrocarbons by near infrared spectro...
Patent number
5,370,790
Issue date
Dec 6, 1994
Ashland Oil, Inc.
Steven M. Maggard
G01 - MEASURING TESTING
Information
Patent Grant
Determination of aromatics in hydrocarbons by near infrared spectro...
Patent number
5,348,645
Issue date
Sep 20, 1994
Ashland Oil, Inc.
Steven M. Maggard
G01 - MEASURING TESTING
Information
Patent Grant
Determination of aromatics in hydrocarbons by near infrared spectro...
Patent number
5,145,785
Issue date
Sep 8, 1992
Ashland Oil, Inc.
Steven M. Maggard
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Method for monitoring feeds to catalytic cracking units by near-inf...
Publication number
20070212790
Publication date
Sep 13, 2007
Marathon Petroleum Company LLC
William T. Welch
G01 - MEASURING TESTING
Information
Patent Application
Method and apparatus for analysis of relative levels of biodiesel i...
Publication number
20060213554
Publication date
Sep 28, 2006
Marathon Ashland Petroleum L.L.C.
William T. Welch
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...