HA

Helmut G. Alt

PP Phillips Petroleum: 78 patents #9 of 1,401Top 1%
P6 Phillips 66: 4 patents #69 of 327Top 25%
SI Saudi Basic Industries: 4 patents #89 of 474Top 20%
CO Conocophillips: 1 patents #472 of 954Top 50%
HL Hughes Electronics Limited: 1 patents #605 of 1,474Top 45%
WA Wacker Chemie Ag: 1 patents #641 of 1,324Top 50%
📍 Bayreuth, OK: #1 of 2 inventorsTop 50%
Overall (All Time): #16,891 of 4,157,543Top 1%
93
Patents All Time

Issued Patents All Time

Showing 76–93 of 93 patents

Patent #TitleCo-InventorsDate
5498581 Method for making and using a supported metallocene catalyst system M. Bruce Welch, Bernd Peifer, Syriac J. Palackal, Gary L. Glass, Ted M. Pettijohn +2 more 1996-03-12
5492985 Polymerization processes Bernd Peifer, Syriac J. Palackal 1996-02-20
5492978 Process for preparing catalyst system Bernd Peifer, M. Bruce Welch, Syriac J. Palackal 1996-02-20
5492975 Polymer bound metallocenes Bernd Peifer, M. Bruce Welch, Syriac J. Palackal 1996-02-20
5492974 Process for preparing polymer bound metallocenes Bernd Peifer, M. Bruce Welch, Syriac J. Palackal 1996-02-20
5492973 Polymer bound ligands Bernd Peifer, M. Bruce Welch, Syriac J. Palackal 1996-02-20
5473020 Polymer bound ligands, polymer bound metallocenes, catalyst systems, preparation, and use Bernd Peifer, M. Bruce Welch, Syriac J. Palackal 1995-12-05
5466766 Metallocenes and processes therefor and therewith Konstantinos Patsidis, Bernd Peifer, Syriac J. Palackal, M. Bruce Welch, Rolf L. Geerts +2 more 1995-11-14
5459218 Syndiotactic polypropylene prepared using silyl bridged metallocenes Syriac J. Palackal, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu +2 more 1995-10-17
5451649 Organometallic fluorenyl compounds, preparation, and use Roland Zenk, M. Bruce Welch 1995-09-19
5436305 Organometallic fluorenyl compounds, preparation, and use Syriac J. Palackal, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh +3 more 1995-07-25
5420320 Method for preparing cyclopentadienyl-type ligands and metallocene compounds Roland Zenk, M. Bruce Welch, Syriac J. Palackal 1995-05-30
5406013 Cyclopentadiene type compounds and method for making Konstantinos Patsidis, Syriac J. Palackal 1995-04-11
5401817 Olefin polymerization using silyl-bridged metallocenes Syriac J. Palackal, Konstantinos Patsidis, Tara G. Hill, Gil R. Hawley, Peter P. Chu +2 more 1995-03-28
5399636 Metallocenes and processes therefor and therewith Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Bernd Peifer, Syriac J. Palackal 1995-03-21
5393911 Cyclopentadiene type compounds and method for making Konstantinos Patsidis, Syriac J. Palackal 1995-02-28
5210352 Fluorene compounds Syriac J. Palackal 1993-05-11
5191132 Cyclopentadiene type compounds and method for making Konstantinos Patsidis, Syriac J. Palackal 1993-03-02