Issued Patents All Time
Showing 1–25 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512632 | Thermoplastic blends containing polyesters and polyester carbonates based on substituted cycloalkylidene bisphenols | Volker Serini, Dieter Freitag | 1996-04-30 |
| 5476893 | Use of nucleus-brominated phthalic acid anhydride for stabilizing thermoplastic polycarbonates against the effect of gamma-rays | Charles E. Lundy, Alexa Sommer, Klaus Horn, Klaus Sommer, Arno Becker | 1995-12-19 |
| 5310793 | Mixtures of polyalkylene terephthalates, new polycarbonates and/or polyester-carbonates and elastomers | Dieter Freitag, Karsten-Josef Idel, Gerd Fengler, Jurgen Kirsch, Uwe Westeppe | 1994-05-10 |
| 5274009 | Use of nuclear aromatic sulfonic acid esters for stabilizing thermoplastic polycarbonates against the effect of gamma-rays | Jurgen Kirsch, Karsten-Josef Idel, Charles E. Lundy | 1993-12-28 |
| 5208127 | Photoconductive recording material with special outermost layer | David R. Terrell, Stefaan De Meutter, Peter Horlacher, Volker Serini | 1993-05-04 |
| 5208128 | Photoconductive recording material with special outermost layer | David R. Terrell, Stefaan De Meutter, Peter Horlacher, Volker Serini | 1993-05-04 |
| 5190817 | Photoconductive recording element | David R. Terrell, Stefaan De Meutter, Volker Serini | 1993-03-02 |
| 5191001 | Process for the production of solventless polycarbonate | Steffen Kuhlig, Ralf Pakull, Peter Tacke, Dieter Freitag, Wolfgang Alewelt | 1993-03-02 |
| 5162411 | Carbonates, their production and their use as flow aids | Gerhard Fennhoff, Uwe Westeppe, Werner Nouvertne, Karsten-Josef Idel, Edgar Leitz | 1992-11-10 |
| 5134195 | Ternary thermoplastic mixtures | Peter Tacke, Werner Nouvertne, Franz-Josef Gielen, Dieter Freitag, Uwe Westeppe | 1992-07-28 |
| 5134220 | Polyester and polyester carbonate based on 3,8-dihydroxy-5a, 10b-diphenylcoumarano-2',3',2,3-coumarane | Volker Serini, Hans-Josef Buysch | 1992-07-28 |
| 5132331 | Polycarbonate foams | Burkhart Kohler, Klaus Kircher, Klaus Horn, Wolfgang Ebert, Charles E. Lundy | 1992-07-21 |
| 5128437 | Polycarbonate from bi(tetrahydrofuran)di phenol | Uwe Westeppe, Hans-Josef Buysch, Klaus Berg | 1992-07-07 |
| 5126495 | Thermoplastic polyester carbonate-polysiloxane block copolymers | Volker Serini, Dietrich Rathmann, Leo Morbitzer, Dieter Freitag | 1992-06-30 |
| 5118759 | Polycarbonate moulding compositions, their preparation and their use | Alfred K. Jung, Karl-Erwin Piejko, Werner Nouverte, Christian Lindner | 1992-06-02 |
| 5112925 | Special diorganosiloxane block copolycarbonates | Peter Horlacher, Heinrich Hähnsen, William C. Bushong, Ottfried Schlak | 1992-05-12 |
| 5108835 | Coextruded double walled sheet of linear polycarbonate resin | Heinrich Hähnsen, Wolfgang Nising, Thomas Scholl, Hans-Josef Buysch | 1992-04-28 |
| 5109076 | Polydiorganosiloxane/polycarbonate block cocondensates based on certain dihydroxydiphenylcycloalkanes | Dieter Freitag, Uwe Westeppe, Alfred K. Jung, Peter Horlacher, Gunther Weymans +2 more | 1992-04-28 |
| 5104963 | Two-stage process for the production of polycarbonates based on special dihydroxydiphenylalkanes | Uwe Westeppe, Dieter Freitag, Gerd Fengler | 1992-04-14 |
| 5100960 | Thermoplastic molding compositions of a polysiloxane block copolycarbonate and a polycarbonate based on certain dihydroxydiphenylcycloalkanes | Peter Horlacher, Dieter Freitag, Karsten-Josef Idel, Uwe Westeppe, Wolfgang Beer +1 more | 1992-03-31 |
| 5084524 | Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic aromatic carbonates on the other hand | Edgar Leitz, Karl-Heinz Ott, Alfred K. Jung, Hans-Josef Buysch, Norbert Schon | 1992-01-28 |
| 5068302 | Polysiloxane-polycarbonate block copolymers based on certain dihydroxydiphenylcycloalkanes | Peter Horlacher, Volker Serini, Dieter Freitag, Karsten-Josef Idel, Uwe Westeppe | 1991-11-26 |
| 5041521 | Polyester-carbonate based on 1,1-bis-(4-hydroxyphenyl)-alkylcycloalkanes | Volker Serini, Dieter Freitag, Uwe Westeppe | 1991-08-20 |
| 5034457 | Thermoplastic blends containing polycarbonates based on substituted cyclohexylidenebisphenols | Volker Serini, Dieter Freitag, Karsten-Josef Idel | 1991-07-23 |
| 5034458 | Polycarbonates of substituted cyclohexylindenebisphenols | Volker Serini, Dieter Freitag, Karsten-Josef Idel | 1991-07-23 |