MW

M. Bruce Welch

PP Phillips Petroleum: 106 patents #5 of 1,401Top 1%
CO Conocophillips: 7 patents #92 of 954Top 10%
HL Hughes Electronics Limited: 1 patents #605 of 1,474Top 45%
📍 Bartlesville, OK: #5 of 1,143 inventorsTop 1%
🗺 Oklahoma: #16 of 12,736 inventorsTop 1%
Overall (All Time): #10,180 of 4,157,543Top 1%
119
Patents All Time

Issued Patents All Time

Showing 51–75 of 119 patents

Patent #TitleCo-InventorsDate
5830958 Polynuclear metallocene preparation and use Bernd Peifer, Helmut G. Alt 1998-11-03
5780659 Substituted indenyl unbridged metallocenes Claudia Schmid, Helmut G. Alt 1998-07-14
5770663 Metallocene preparation and use Bernd Peifer, Helmut G. Alt 1998-06-23
5770755 Process to prepare polymeric metallocenes Peter Schertl, Helmut G. Alt, Bernd Peifer, Syriac J. Palackal 1998-06-23
5744666 Process for preparing an alkynyl fulvene group containing compound and said compound Bernd Peifer, Helmut G. Alt 1998-04-28
5728908 Process for preparing a bridged ligand and said bridged ligand Bernd Peifer, Helmut G. Alt 1998-03-17
5726264 Processes to produce metallocene compounds and polymerization processes therewith Michael E. Jung, Helmut G. Alt 1998-03-10
5712404 Cyclopentadienyl-type ligands, metallocene compounds catalyst systems, preparation and use Bernd Peifer, Helmut G. Alt 1998-01-27
5710224 Method for producing polymer of ethylene Helmut G. Alt, Syriac J. Palackal, David C. Rohlfing, Jay Janzen 1998-01-20
5705578 Method for making and using a supported metallocene catalyst system Bernd Peifer, Helmut G. Alt 1998-01-06
5670589 Organoaluminoxy product, catalyst systems, preparation, and use Rolf L. Geerts, Syriac J. Palackal, Helmut G. Alt, Bernd Peifer, Harold R. Deck 1997-09-23
5668230 Olefin polymerization Peter Schertl, Helmut G. Alt 1997-09-16
5654454 Metallocene preparation and use Bernd Peifer, Helmut G. Alt 1997-08-05
5650528 Metallocene compounds Krisztina Frey, Gabriele von Massow, Helmut G. Alt 1997-07-22
5646323 Process for preparing metallocene compounds Krisztina Frey, Gabriele von Massow, Helmut G. Alt 1997-07-08
5637744 Bis fluorenyl metallocenes and use thereof Helmut G. Alt, Konstantinos Patsidis, Peter P. Chu 1997-06-10
5631335 Process of polymerizing olefins using diphenylsilyl or dimethyl tin bridged 1-methyl fluorenyl metallocenes Helmut G. Alt, Konstantinos Patsidis, Peter P. Chu 1997-05-20
5631203 Metallocene compounds and preparation thereof containing terminal alkynes Helmut G. Alt, Bernd Peifer 1997-05-20
5627247 Organometallic fluorenyl compounds and use thereof in olefin polymerization Helmut G. Alt, Gil R. Hawley, Paul D. Smith, Syriac J. Palackal, Michael Schmid +4 more 1997-05-06
5627118 Silyl bridged metallocenes and use thereof Syriac J. Palackal, Helmut G. Alt, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley +2 more 1997-05-06
5616752 Metallocenes and processes therefor and therewith Konstantinos Patsidis, Bernd Peifer, Helmut G. Alt, Rolf L. Geerts, Darryl R. Fahey +2 more 1997-04-01
5610247 Unbridged metallocenes of 9-substituted fluorenyl compounds and use thereof Helmut G. Alt, Syriac J. Palackal, Konstantinos Patsidis, Rolf L. Geerts, Eric T. Hsieh +5 more 1997-03-11
5594078 Process for producing broad molecular weight polyolefin Rolf L. Geerts, Syriac J. Palackal, Ted M. Pettijohn 1997-01-14
5591879 Process for preparing cyclopentadienyl-type ligands Krisztina Frey, Gabriele von Massow, Helmut G. Alt 1997-01-07
5578741 Process for preparing cyclopentadienyl-type ligands Krisztina Frey, Gabriele von Massow, Helmut G. Alt 1996-11-26