Issued Patents All Time
Showing 101–125 of 213 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037952 | Process for the production of high molecular weight, optionally branched polyarylene sulfides | Erhard Tresper, Wolfgang Alewelt, Ernst-Ulrich Dorf, Wolfgang Russeler | 1991-08-06 |
| 5030753 | Process for the preparation of dichloro- or trichloroacetyl chloride | Walter Freyer, Karlheinz Miltenberger | 1991-07-09 |
| 5017682 | Process for the production of unbranched polyarylene sulfides of improved color quality and improved color stability | Burkhard Kohler, Rolf-Volker Meyer, Ernst-Ulrich Dorf, Wolfgang Russeler | 1991-05-21 |
| 4987226 | Rhenium-oxo-porphyrin complexes | Johann Buchler, Steffen Kruppa, Guenter Prescher | 1991-01-22 |
| 4980500 | Process for the preparation of biuret polyisocyanates, the compounds obtained by this process and their use | Josef Pedain, Manfred Schonfelder | 1990-12-25 |
| 4973718 | Method for the catalytic epoxidation of olefins with hydrogen peroxide | Johann Buchler, Guenter Prescher | 1990-11-27 |
| 4970007 | Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil | Dennis Miller, Arno Holst, Sigmar-Peter von Halasz | 1990-11-13 |
| 4960994 | X-ray cassette for sheet x-ray receiving material and method of processing the same | Jurgen Muller, Dieter Wauer, Thomas Zehetmaier, Georges Brys, Emile Schoeters +2 more | 1990-10-02 |
| 4947419 | Container for photosensitive material | Reimund Kluge | 1990-08-07 |
| 4933696 | Light impermeable tearable covering for stack of sheet films | Johann Zanner | 1990-06-12 |
| 4909389 | Filmsheet package and method of packaging filmsheets | Hendrik S. Plessers, Dirk Peeters, Joseph C. Van Looy, Emiel J. Wollaert, deceased, Johann Zanner | 1990-03-20 |
| 4904125 | Process for strengthening geological formations | Manfred Kapps, Max Mann, Peter Vehlewald, Manfred Dietrich, Frank Meyer +2 more | 1990-02-27 |
| 4887284 | Method of checking the presence or absence of an X-ray sheet film in a casette introduced into an apparatus for unloading or loading a sheet film into the cassette, and a device for carrying out the method | Walter Bauer, Ernst Widemann | 1989-12-12 |
| 4857560 | Reaction products useful as catalysts in the production of isocyanate-based plastics | Claus-Dieter Sommerfeld, Christoph Prolingheuer, Walter Klan | 1989-08-15 |
| 4845252 | Method for the catalytic epoxidation of olefins with hydrogen peroxide | Guenter Prescher, Johann Buchler, Axel Kleemann | 1989-07-04 |
| 4844842 | Air humidifier for dry treatment device for photographic material | Maximilian Markl, Gunter Heidrich, Jurgen Muller, Dieter Wauer | 1989-07-04 |
| 4842776 | Styrylaryloxy ether sulfonates, a process for their preparation and their use in the recovery of crude oil | Walter Rupp, Gerhart Schneider, Eva M. Kohn | 1989-06-27 |
| 4823535 | Device for unloading X-ray film cassettes | Johann Zanner | 1989-04-25 |
| 4819317 | Arrangement for unloading and loading of x-ray film cassettes | Walter Bauer, Herbert Plaschke, Otto Butz | 1989-04-11 |
| 4816412 | Method for the determination of the content of solid carbon compounds in soil samples | Horst Fechter | 1989-03-28 |
| 4811547 | Device for loading and unloading X-ray film cassettes | Herman Raats, Johann Zanner | 1989-03-14 |
| 4791282 | System for automatically charging and discharging X-ray film sheets into and from cassettes and a cassette for use in the system | Herbert Gebele | 1988-12-13 |
| 4788810 | Device for loading and unloading X-ray film cassettes | Walter Bauer | 1988-12-06 |
| 4783588 | System for charging and/or discharging X-ray film sheets into and/or from cassette, and a cassette for use in the system | Herbert Gebele | 1988-11-08 |
| 4783019 | Film supply magazine for film sheet packs provided with light-sealing sheathings | Johann Zanner | 1988-11-08 |