Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7348396 | Modified polyethylenephosphinic acids and their salts | Martin Sicken, Werner Krause, Norbert Weferling | 2008-03-25 |
| 7129320 | Modified polyethylenephosphinic acids and their salts | Martin Sicken, Werner Krause, Norbert Weferling | 2006-10-31 |
| 6770779 | Process for preparing alkylphosphonite esters | Norbert Weferling, Martin Sicken, Gunter Kolbe | 2004-08-03 |
| 6727335 | Polymeric phosphinic acids and salts thereof | Martin Sicken, Norbert Weferling | 2004-04-27 |
| 6639017 | Flame-retardant unsaturated polyester resins | Sebastian Hörold | 2003-10-28 |
| 6600067 | Process for preparing ethylenediphosphonic acids | Martin Sicken | 2003-07-29 |
| 6600068 | Process for preparing ethanebis(methylphosphinic) acid | Martin Sicken | 2003-07-29 |
| 6583315 | Process for preparing ethanebis(alkylphosphinic) acids | Martin Sicken, Norbert Weferling | 2003-06-24 |
| 6569974 | Polymeric phosphinic acids and salts thereof | Martin Sicken, Norbert Weferling | 2003-05-27 |
| 6536254 | Method and device for producing a metal strip for tailored blanks to be cut to length | Rudolf Kawalla, Friedrich Behr | 2003-03-25 |
| 6534673 | Process for preparing salts of dialkylphosphinic acids | Norbert Weferling, Gunter Kolbe | 2003-03-18 |
| 6420598 | Process for preparing alkylphosphonic acids | Norbert Weferling, Martin Sicken | 2002-07-16 |
| 6388125 | Process for preparing phosphinic acids | Martin Sicken | 2002-05-14 |
| 6359171 | Process for preparing dialkylphosphinic acids and their salts | Norbert Weferling, Martin Sicken, Gunter Kolbe | 2002-03-19 |
| 6355832 | Processing for preparing salts of dialkylphosphinic acids | Norbert Weferling, Gunter Kolbe | 2002-03-12 |
| 6329544 | Process for preparing dialkylphosphinic acids | Norbert Weferling, Gunter Kolbe | 2001-12-11 |
| 6300516 | Process for preparing dialkylphosphinic acids | Norbert Weferling, Gunter Kolbe | 2001-10-09 |
| 6242642 | Process for preparing arylalphosphinic acids | Norbert Weferling | 2001-06-05 |
| 6232493 | Process for preparing metal salts of arylalkylphosphinic acids | Norbert Weferling | 2001-05-15 |
| 5973194 | Process for preparing dialkylphosphinate salts | Norbert Weferling, Gunter Kolbe | 1999-10-26 |
| 5854361 | Process for preparing phosphorus-modified epoxy resins | Sebastian Hörold | 1998-12-29 |
| 5830973 | Phosphorus-modified epoxy resins comprising epoxy resins and phosphorus-containing compounds | Sebastian Hörold | 1998-11-03 |
| 5398801 | Product conveying apparatus | Manfred Langen, Udo Teich | 1995-03-21 |
| 5287895 | Equipment for transporting and handling weft-yarn stock bobbins | Tonny Raaijmakers, Gregor Gebald, Manfred Langen, Helmut Bungter | 1994-02-22 |
| 5247969 | Feeding and removing weft yarn stock bobbins to a loom bobbin frame | Tonny Raaijmakers, Antonius J. M. Hamer, Gregor Gebald, Manfred Langen, Helmut Bungter | 1993-09-28 |