Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4308190 | Dental materials based on organic plastics in paste form | Michael Walkowiak, Wolfgang Podszun, Bernhard Leusner, Hans-Hermann Schulz | 1981-12-29 |
| 4302376 | Dental materials which are opaque to X-rays and are based on organic plastics in paste form | Michael Walkowiak, Wolfgang Podszun, Bernhard Leusner, Hans-Hermann Schulz | 1981-11-24 |
| 4300886 | Shaped dental articles | Gerhard Balle, Bernd Leusner, Hans-Hermann Schulz, Michael Walkowiak | 1981-11-17 |
| 4297455 | Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates | Christian Lindner, Herbert Bartl, Manfred Schreckenberg, Dieter Freitag, Klaus Konig | 1981-10-27 |
| 4277536 | Bead polymers of viscous dimethacrylates | Wolfgang Podszun, Michael Walkowiak, Hans-Hermann Schulz | 1981-07-07 |
| 4272428 | Plasticized vinyl chloride polymer | Christian Lindner, Herbert Bartl, Dietrich Hardt, Karola Brudermanns | 1981-06-09 |
| 4267303 | Process for the preparation of polymers with diphenol carbonate end groups | Klaus Konig, Manfred Schreckenberg, Christian Lindner, Dieter Freitag | 1981-05-12 |
| 4255546 | Acrylonitrile polymerization in fluorinated hydrocarbons | Siegfried Korte, Theo Neukam | 1981-03-10 |
| 4233424 | Process for the production of bead polymers | Gerhard Balle, Michael Walkowiak, Hans-Hermann Schulz | 1980-11-11 |
| 4223114 | Process for the production of bead polymers | Gerhard Balle, Michael Walkowiak, Hans-Hermann Schulz | 1980-09-16 |
| 4217297 | Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups | Christian Lindner, Herbert Bartl, Manfred Schreckenberg, Dieter Freitag, Klaus Konig | 1980-08-12 |
| 4217437 | Process for the preparation of carbonic acid bis-diphenol esters of polyalkylene oxide-diols lengthened via carbonate groups and their use for the preparation of high-molecular, segmented polyether/polycarbonates which can be processed as thermoplastics | Manfred Schreckenberg, Dieter Freitag, Christian Lindner, Herbert Bartl, Klaus Konig | 1980-08-12 |
| 4216298 | Process for the preparation of carbonic acid bis-diphenol esters of polyester-diols and their use for the preparation of high-molecular segmented polyester/polycarbonates which can be processed as thermoplastics | Manfred Schreckenberg, Dieter Freitag, Christian Lindner, Herbert Bartl, Klaus Konig | 1980-08-05 |
| 4192940 | Polyesters which can be prepared by reacting a carbonic acid aryl ester with a polyester prepared from a polyhydric alcohol and a polybasic carboxylic acid which is aliphatic | Christian Lindner, Herbert Bartl, Dietrich Hardt | 1980-03-11 |
| 4191705 | Process for the preparation of carbonic acid esters of polyester-polyols | Christian Lindner, Herbert Bartl, Manfred Schreckenberg, Dieter Freitag, Klaus Konig | 1980-03-04 |