Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616754 | Manufacture of tray holder from single molded article | Burno Heinzl, Herbert Frowein, Hartmut Stiegler, Joachim Wurz, Willi Huttel +1 more | 1986-10-14 |
| 4475204 | Method and apparatus for the production of flat, transparent vitreous silica slabs of low bubble content | Lutz Brandt, Karl Kreutzer, Karlheinz Rau, Fritz Simmat | 1984-10-02 |
| 4465366 | Device for the photoelectric determination of the position of at least one focal plane of an image | — | 1984-08-14 |
| 4377405 | Method for the production of flat, transparent vitreous silica slabs of low bubble content | Lutz Brandt, Karl Kreutzer, Karlheinz Rau, Fritz Simmat | 1983-03-22 |
| 4284229 | Reclosable cross-bottom sack | Hans Joachim Struck | 1981-08-18 |
| 4270677 | Reclosable cross-bottom sack | — | 1981-06-02 |
| 4243797 | Process for the manufacture of soft and hard resins of urea, formaldehyde and a CH-acidic aldehyde, and their use | Harro Petersen, Kurt F. Fischer, Hans-Joachim Klug, Werner Trimborn | 1981-01-06 |
| 4235366 | Plastics sack with internal closure member, base cover sheet and emptying means | Fritz Achelpohl | 1980-11-25 |
| 4214934 | Process for coating woven tubing of fibrillated tape with synthetic thermoplastics | Hartmut Upmeier, Hans-Joachim Brauner | 1980-07-29 |