John A. Ewen — 54 Patents at Fina Technology

John A. Ewen has been granted 54 US patents while listed as an inventor at Fina Technology. The first was granted in 1985 and the most recent in December 2010. John A. Ewen ranks #46,969 of 4,157,543 US inventors in our database (top 1.1%). Patent records list John A. Ewen in Houston, TX, US.

Issued Patents All Time

Showing 1–25 of 54 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7851644	Heterocyclic metallocenes and polymerization catalysts	Michael J. Elder, Robert L. Jones, Yuri A. Dubitsky	2010-12-14
7723450	Transition metal compound, ligand system, catalyst system and process for preparing polyolefins	Robert L. Jones, Michael J. Elder, Jennifer Kipke, Alexander Koeppl, Markus Schopf	2010-05-25	$13,724,000
7544749	Polymerization catalysts, organic transition metal compounds, process for preparing polyolefins and polyolefins	Robert L. Jones, Naka Seidel, Michael J. Elder	2009-06-09	$23,078,000
7504354	Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins	Michael J. Elder, Robert L. Jones	2009-03-17	$6,150,000
7332456	Alpha olefin catalyst systems	—	2008-02-19
7238818	Heterocyclic metallocenes and polymerization catalysts	Michael J. Elder, Robert L. Jones, Yuri A. Dubitsky	2007-07-03	$13,472,000
6872790	Alpha olefin polymer products and catalyst systems	—	2005-03-29
6649712	Process for the polymerization of alpha olefins	—	2003-11-18
6635779	Metallocene compounds, process for their preparation and their use in catalytic systems for the polymerization of olefins	Michael J. Elder, Robert L. Jones	2003-10-21
6444833	Metallocene compounds, process for their preparation and their use in catalytic systems for the polymerization of olefins	Michael J. Elder, Robert L. Jones	2002-09-03
6403772	Open-pentadienyl metallocenes, precursors thereof and polymerization catalysts therefrom	Robert W. Strozier, Robert L. Jones, Michael J. Elder	2002-06-11
6369175	Process for producing hemiisotactic polypropylene	—	2002-04-09
6344577	Process for making silicon bridged metallocene compounds and metallocene catalysts	—	2002-02-05
6262199	Process and catalyst for producing isotactic polyolefins	Michael J. Elder, B. Raghava Reddy	2001-07-17
6252019	Process for polymerizing tactioselective polyolefins in condensed phase using hafnocenes	—	2001-06-26
6184326	Syndiotactic polypropylene	Abbas Razavi	2001-02-06
6180732	Stereospecific metallocene catalysts with stereolocking .alpha.-cp substituents	—	2001-01-30
6160072	Process for polymerizing tactioselective polyolefins in condensed phase using titanocenes	—	2000-12-12
6117957	Process for polymerization of olefins with silicon bridged metallocene catalyst systems	—	2000-09-12
6069237	Open-pentadienyl metallocenen ligands, polymerization catalysts/catalyst precursors and polymers therefrom	Robert W. Strozier	2000-05-30
5883202	Process for olefin polymerization using metallocene catalysts with Lewis acids and aluminum alkyls	Michael J. Elder	1999-03-16
5846896	Metallocene catalyst systems	—	1998-12-08
5807939	Polymerization of alpha-olefins with cationic metallocene catalysts based on organoaluminum anions	Michael J. Elder	1998-09-15
5763549	Cationic metallocene catalysts based on organoaluminum anions	Michael J. Elder	1998-06-09	$9,547,000
5710222	Method for controlling the melting points and molecular weights of syndiotactic polyolefins using metallocene catalyst systems	B. Raghava Reddy, Michael J. Elder	1998-01-20	$13,198,000

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John A. Ewen — 54 Patents

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