John D. Stewart — 17 Patents at Chevron

John D. Stewart has been granted 17 US patents while listed as an inventor at Chevron. The first was granted in 1987 and the most recent in April 2020. John D. Stewart ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list John D. Stewart in Friendswood, TX, US.

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
10611863	Polymerization catalyst delivery	Anurag Gupta, Anne M Balinsky, Robert R. McElvain	2020-04-07
10583538	Feed oscillation via variable pitch gears	Jeremy Watford, William Carlos Cain, John Kirby Mitchell, Jodi Ann Bello	2020-03-10	$28,000
10179826	Polymerization catalyst delivery	Anurag Gupta, Anne M Balinsky, Robert R. McElvain	2019-01-15
9340627	Elbow and horizontal configurations in a loop reactor	Scott E. Kufeld, Joel A. Mutchler, Ralph W. Romig, Catherine M. Gill, Bruce E. Kreischer +1 more	2016-05-17
9303099	Methods of controlling dual catalyst olefin polymerizations with an alcohol compound	Qing Yang, Max P. McDaniel, Tony R. Crain, Albert P. Masino, Ted H. Cymbaluk	2016-04-05
8957168	Methods for controlling dual catalyst olefin polymerizations with an alcohol compound	Qing Yang, Max P. McDaniel, Tony R. Crain, Albert P. Masino, Ted H. Cymbaluk	2015-02-17
8932527	Elbow and horizontal configurations in a loop reactor	Scott E. Kufeld, Joel A. Mutchler, Ralph W. Romig, Catherine M. Gill, Bruce E. Kreischer +1 more	2015-01-13
8487053	Methods for removing polymer skins from reactor walls	George R. Rajaendran, Max P. McDaniel, Gregory G. Hendrickson, John D. Hottovy, Ted H. Cymbaluk +7 more	2013-07-16
D568165	Bottle and bottle top	—	2008-05-06
D540178	Bottle	—	2007-04-10
D518378	Bottle top	—	2006-04-04
6617403	Olefin polymerization process	Ashish M. Sukhadia, Elizabeth A. Benham, Joseph Bergmeister, III, Rex L. Bobsein, Gerhard Guenther +4 more	2003-09-09	$63,615,000
5866661	Ethylene polymerization processes and products thereof	Elizabeth A. Benham, Max P. McDaniel, Lonnie J. Dodson, Charles R. Nease	1999-02-02	$14,525,000
5493852	Lawnmower attachment spreader	—	1996-02-27
4801634	Production of pigmentary copper phthalocyanine	Robert Langley, Arthur Stark Walls	1989-01-31
4801638	Production of pigmentary copper phthalocyanine	Robert Langley, Arthur Stark Walls	1989-01-31
4694078	Production of pigmentary copper phthalocyanine	Robert Langley, Arthur Stark Walls	1987-09-15

John D. Stewart — 17 Patents

Issued Patents All Time

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