Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5191001 | Process for the production of solventless polycarbonate | Steffen Kuhlig, Ralf Pakull, Ulrich Grigo, Dieter Freitag, Wolfgang Alewelt | 1993-03-02 |
| 5134195 | Ternary thermoplastic mixtures | Werner Nouvertne, Franz-Josef Gielen, Dieter Freitag, Ulrich Grigo, Uwe Westeppe | 1992-07-28 |
| 5025065 | Fire-retardant polycarbonates and polyesters | Ulrich Grigo, Werner Nouvertne, Dieter Freitag, Karsten-Josef Idel, Uwe Westeppe | 1991-06-18 |
| 4966958 | Process for the preparation of aromatic polyesters | Ludwig Bottenbruch, Hans-Josef Buysch, Ulrich Grigo, Wolfgang Alewelt | 1990-10-30 |
| 4929674 | Mixtures of thermoplastic poly(ester) carbonates with thermoplastic polyurethanes | Werner Nouvertne, Franz-Josef Gielen, Ulrich Grigo, Bernd Quiring, Christian Lindner | 1990-05-29 |
| 4923957 | Process for the production of aromatic polyesters | Ulrich Grigo, Karsten-Josef Idel | 1990-05-08 |
| 4841000 | Process for the preparation of aromatic polyesters | Ulrich Grogp, Karsten-Josef Idel | 1989-06-20 |
| 4740554 | Thermoplastic moulding compositions based on polyphenylene oxide/polycarbonate block condensates | Hans-Jurgen Kress, Dieter Freitag, Karl-Heinz Ott | 1988-04-26 |
| 4704430 | Thermoplastic moulding materials | Dieter Freitag, Werner Nouvertne, Klaus G. Wilms | 1987-11-03 |
| 4645806 | Use of certain polyphenylene oxides for the production of aromatic block polyether-poly(ester) carbonates by the interfacial process | Dieter Freitag, Ludwig Bottenbruch, Klaus G. Wilms | 1987-02-24 |
| 4600753 | Two stage process for the production of aromatic polyester-carbonate | Dieter Freitag, Claus Wulff, Gerhard Henes, Ludwig Bottenbruch | 1986-07-15 |
| 4585596 | Process for the production of aromatic polyester carbonates in the absence of tertiary amines | — | 1986-04-29 |
| 4569984 | Interphase process for the production of fully aromatic polyester carbonate from alkali salt of aromatic dicarboxylic acid and bis-chlorocarbonic ester of diphenol | — | 1986-02-11 |
| 4499237 | Polycarbonate-polyolefin moulding compositions | Helmut Korber, Josef Merten, Dieter Neuray | 1985-02-12 |
| 4405554 | Use of hydrogenated polybenzyls as a mould-release agent for aromatic polyesters | Dieter Freitag, Klaus Reinking | 1983-09-20 |
| 4366276 | Flame-resistant moulding materials based on thermoplastic aromatic polyesters and polyesters carbonates, a process for their production and their use in the production of moulded bodies | Dieter Freitag, Werner Nouvertne, Klaus Reinking, Frank Kleiner, Manfred Schmidt | 1982-12-28 |
| 4362846 | Polyamide moulding compounds having high impact strength | Helmut Korber, Friedrich Fahnler, Dieter Neuray, Frieder Heydenreich | 1982-12-07 |
| 4293662 | Polyamides containing oxidized polyethylene | Frieder Heydenreich, Helmut Korber, Friedrich Fahnler, Dieter Neuray | 1981-10-06 |
| 4246371 | Polyamide blends | Rolf-Volker Meyer | 1981-01-20 |
| 4244858 | Flameproof polyamide moulding compositions | Dieter Neuray, Dietrich Michael | 1981-01-13 |
| 4221879 | Impact-resistant polyamide moulding compositions | Gert Humme, Friedrich Fahnler, Dieter Neuray, Karl-Heinz Ott | 1980-09-09 |
| 4193907 | Flame proof polyamide moulding compositions | Dieter Neuray, Dietrich Michael | 1980-03-18 |
| 4185044 | Flame-proofed unreinforced and unfilled polyamide moulding compositions | Dieter Neuray, Dietrich Michael | 1980-01-22 |