Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798686 | Organic polymers with electrical properties | Jurgen Hocker, Ludwig Rottmaier, Jurgen Kirsch, Heinz-Josef Fullmann | 1989-01-17 |
| 4792590 | Aliphatic-aromatic polyamidimides containing polyamides | Wilfried Zecher | 1988-12-20 |
| 4788238 | Thermoplastic moulding compositions having flame-retardant properties | Gert Todtemann, Otto Koch | 1988-11-29 |
| 4782123 | Process for the preparation of copolyphosphonates of high notched impact strength | Hermann Kauth, Dieter Freitag | 1988-11-01 |
| 4743638 | Rapid crystallizing polyphenylene sulphide compositions | Peter Bier, Ludwig Bottenbruch, Erhard Tresper | 1988-05-10 |
| 4735977 | Rapidly crystallizing polyphenylene sulphide material containing sulfonic acid ester | Peter Bier, Ludwig Bottenbruch, Erhard Tresper | 1988-04-05 |
| 4728685 | Rapid-crystallizing polyphenylene sulphide compositions | Peter Bier, Ludwig Bottenbruch, Erhard Tresper | 1988-03-01 |
| 4721774 | Thermoplastic moulding compositions with flame-resistant properties | Gert Todtemann, Otto Koch | 1988-01-26 |
| 4719279 | Process for the preparation of copolyphosphonates having high toughness | Hermann Kauth, Dieter Freitag | 1988-01-12 |
| 4665156 | Mono- and biaxially drawable film of polyphenylene sulphide | Karsten-Josef Idel, Edgar Ostlinning | 1987-05-12 |
| 4640970 | Process for the production of polyamide imides | Wilfried Zecher, Frank Kleiner | 1987-02-03 |
| 4631311 | Acrylonitrile free blends of a polycarbonate, a graft rubber and a terpolymer resin | Frank Wingler, Otto Koch, Christian Lindner | 1986-12-23 |
| 4628079 | Polyamide imides produced from either lactams or polyamides with isocyanates or anhydrides in which products are precipitated with a non-solvent | Wilfried Zecher, Rolf Dhein | 1986-12-09 |
| 4624981 | Process for the production of polyamideimides from polyisocyanates, polycarboxylic acid anhydrides and lactams or polyamides in which the reaction products are precipitated with a non-solvent | Wilfried Zecher, Rolf Dhein | 1986-11-25 |
| 4621117 | Acrylonitrile-free polycarbonate blends | Frank Wingler, Otto Koch, Christian Lindner | 1986-11-04 |
| 4609699 | Polyarylene sulphides with reduced corrosion | Rolf-Volker Meyer, Karsten-Josef Idel, Rolf Dhein | 1986-09-02 |
| 4600729 | Process for the preparation of aliphatic-aromatic poly-amide-imides in the absence of phenols | Wilfried Zecher | 1986-07-15 |
| 4549006 | Polyamideimides produced from either lactams or polyamides with isocyanates and anhydrides as thermoplasts | Wilfried Zecher, Rolf Dhein | 1985-10-22 |
| 4548970 | Polyamideimides prepared by reacting either lactams or polyamides with polyisocyanates and anhydrides using a lactam as an additive | Wilfried Zecher, Rolf Dhein | 1985-10-22 |
| 4546138 | Process for the production of polyamide imides by using a phenol in the workup of the material | Wilfried Zecher, Rolf Dhein | 1985-10-08 |
| 4546162 | Polyamidoimides prepared from trimelitic acid anhydride, isocyanates and either lactams or polyamides using a mixture of diisocyanatodiphenylmethane and tolylene diisocyanates | Wilfried Zecher, Willi Dunwald, Rudolf Merten | 1985-10-08 |
| 4529666 | Plasticized polyvinyl alcohol | Herbert Salzburg, Frank Kleiner | 1985-07-16 |
| 4517328 | Mixtures of substituted diphenyl ethers with aromatic polyesters and polyester carbonates having an improved processibility | Manfred Schmidt, Dietrich Rathmann | 1985-05-14 |
| 4415719 | Thermoplastic, branched aromatic polyphosphonates, and a process for their production | Manfred Schmidt, Ludwig Bottenbruch, Dieter Freitag, Harry Rohr, Hans-Dieter Block | 1983-11-15 |
| 4405554 | Use of hydrogenated polybenzyls as a mould-release agent for aromatic polyesters | Dieter Freitag, Peter Tacke | 1983-09-20 |