Issued Patents All Time
Showing 151–175 of 213 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4578476 | Process for the production of 2-aryl-4-acyl-1.3.4-oxdiazolones-(5) | Karl-Heinrich Meyer | 1986-03-25 |
| 4564669 | Thermotropic aromatic polyesters having a high tenacity and an improved melt viscosity, and mouldings, filaments, fibres and films thereof | Hans-Rudolf Dicke, Aziz El-Sayed, Ulrich Biskup, Ludwig Bottenbruch, Dieter Freitag | 1986-01-14 |
| 4544197 | Windshield for motor vehicles equipped with a windshield wiper installation | Hans Trube, Martin Pfeiffer | 1985-10-01 |
| 4536561 | Thermotropic, wholly aromatic polyesters | Hans-Rudolf Dicke | 1985-08-20 |
| 4533702 | Aromatic polyester carbonates having a high notched impact strength and a process for the production thereof | Dieter Freitag, Ludwig Bottenbruch | 1985-08-06 |
| 4517328 | Mixtures of substituted diphenyl ethers with aromatic polyesters and polyester carbonates having an improved processibility | Dietrich Rathmann, Klaus Reinking | 1985-05-14 |
| 4508890 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-aging resistance, and their use | Ludwig Bottenbruch, Dieter Freitag | 1985-04-02 |
| 4500653 | Blowing agents for thermoplastic compositions | Mark W. Witman, Gerard E. Reinert, In-Chun Lim | 1985-02-19 |
| 4481350 | Process for the preparation of thermoplastic aromatic polyphosphonates containing small proportions of carbonate structures and product thereof | Ludwig Bottenbruch, Dieter Freitag | 1984-11-06 |
| 4450249 | Internal antistatic agents for polycarbonates and for polycarbonate films | Joachim Wank, Eckart Reese, Dieter Freitag, Klaus Wangermann, Wolfgang Cohnen | 1984-05-22 |
| 4437401 | Separator plate for type band printer | Horst Heinrich, Gunter Herrmann | 1984-03-20 |
| 4434626 | Maintenance and protection devices for cooling plants | — | 1984-03-06 |
| 4421483 | Delivery system for dental instruments or the like | Helmut Pietschmann, Emil Hirth | 1983-12-20 |
| 4416037 | Releasable connector in leashes for domestic animal, safety line or the like | Rudolf Panthofer, Hans Ley | 1983-11-22 |
| 4415719 | Thermoplastic, branched aromatic polyphosphonates, and a process for their production | Ludwig Bottenbruch, Dieter Freitag, Klaus Reinking, Harry Rohr, Hans-Dieter Block | 1983-11-15 |
| 4412623 | Teat feeding bottle having a pierceable wall and spike opening means | — | 1983-11-01 |
| 4413101 | Thermoplastic polyurethane compositions of improved flame retardance | Robert P. Yeater | 1983-11-01 |
| 4401802 | Process for the preparation of thermoplastic aromatic polyphosphonatocarbonates with improved heat-ageing resistance, and their use | Ludwig Bottenbruch, Dieter Freitag | 1983-08-30 |
| 4386431 | X-Ray film cassette | Willy K. Van Landeghem, Petrus J. De Maayer, Francois P. Loots, Hendrik A. Pattyn, Walter Bauer +2 more | 1983-05-31 |
| 4382898 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Dieter Freitag, Ludwig Bottenbruch | 1983-05-10 |
| 4382041 | Process for the production of aromatic carboxylic acid chlorides | Udo Rudolph, Dieter Freitag, Ludwig Bottenbruch | 1983-05-03 |
| 4381390 | Thermoplastic polyphosphonatophenyl ester carbonate from aryloxycarbonyloxy-benzoic acid aryl ester and preparation thereof | Ludwig Bottenbruch | 1983-04-26 |
| 4374971 | Process for the preparation of thermoplastic aromatic polyphosphonates with improved thermal ageing resistance | Dieter Freitag, Ludwig Bottenbruch | 1983-02-22 |
| 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, Peter Tacke, Frank Kleiner | 1982-12-28 |
| 4363626 | Dental syringe | Gerd Hoyer, Hermann Leiberich, Helmut Pietschmann | 1982-12-14 |