Issued Patents All Time
Showing 76–100 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4919091 | Ignition switch arrangement for an internal combustion engine having an electrical ignition system | Michael Wissmann, Harald Schleimann | 1990-04-24 |
| 4885383 | Process for the preparation of carboxylic acid methyl esters | Helmut Springer, Peter Lappe | 1989-12-05 |
| 4854707 | Method and apparatus for the optical electronic measurement of a workpiece | Manfred Ring, Helmut Ackermann | 1989-08-08 |
| 4773362 | Automatic starting arrangement for an internal combustion engine | Michael Wissmann, Hans Nickel | 1988-09-27 |
| 4723047 | Process for the preparation of nonadecanediols | Helmut Bahrmann, Boy Cornils, Werner Konkol, Ludger Bexten, Hanswilhelm Bach | 1988-02-02 |
| 4709669 | Ignition arrangement for an internal combustion engine of a handheld portable tool | Michael Wissmann, Hans Nickel | 1987-12-01 |
| 4696264 | Two-stroke engine | Werner Vondernau, Hans Nickel, Michael Wissmann, Harald Schliemann | 1987-09-29 |
| 4672929 | Automatic starting arrangement for an internal combustion engine | Michael Wissmann, Hans Nickel | 1987-06-16 |
| 4570410 | Composite plate and method of making same | Wilhelm Tuneke | 1986-02-18 |
| 4515986 | Process for preparing 3-dimethylamino-2,2-dimethylpropanal | Wolfgang Bernhagen, Volker Falk, Helmut Springer, Ernst Wiebus, Claus Kniep | 1985-05-07 |
| 4511439 | Solar-selective layers and method for producing same | Boy Cornils, Bela Tihanyi, Werner DeWin | 1985-04-16 |
| 4510182 | Method for the production of homogeneous coatings of two or more metals and/or metal compounds | Boy Cornils, Bela Tihanyi, Werner DeWin, Edwin Erben, August Muhlratzer | 1985-04-09 |
| 4474579 | Process for improving the combustion of diesel engine fuels | Manfred Wilderson, Werner DeWin, Bela Tihanyi | 1984-10-02 |
| 4414419 | Stabilization of aldehydes | Volker Falk, Claus Kniep | 1983-11-08 |
| 4404410 | Process for preparing 2,3-dimethyl-2,3-butanediol | Boy Cornils, Wolfgang Bernhagen, Helmut Springer | 1983-09-13 |
| 4337363 | Process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehyde | Helmut Bahrmann, Boy Cornils, Carl D. Frohning | 1982-06-29 |
| 4324918 | N,N-Dimethyl-N'-isobutyl-N'-.beta.-hydroxyethyl-propylenediamine and a process for its preparation | Volker Falk, Claus Kniep | 1982-04-13 |
| 4317945 | Process for preparing 2-methyl-2-sec.butyl-1,3-propanediol | Wolfgang Bernhagen, Helmut Bahrmann, Helmut Springer | 1982-03-02 |
| 4317925 | Process for the production of di-n-propylacetic acid | Wolfgang Bernhagen, Helmut Springer | 1982-03-02 |
| 4311854 | Process for the production of di-n-propyl-acetic acid | Volker Falk, Claus Kniep | 1982-01-19 |
| 4307252 | 2-Propyl-pent-4-en-1-al | Wolfgang Bernhagen, Helmut Springer | 1981-12-22 |
| 4289913 | Process for preparing 3-(4)-formyltricyclo-[5,2,1,0.sup.2,6 ]-decene-8 | Helmut Bahrmann, Boy Cornils | 1981-09-15 |
| 4288643 | Process for preparing 2,3-dimethyl-butene-2 | Wolfgang Bernhagen, Helmut Springer | 1981-09-08 |
| 4285875 | Process for preparing carboxylic acids by catalytic oxidation of aldehydes | Boy Cornils, Werner De Win | 1981-08-25 |
| 4275242 | Process for preparing 2-methylenealdehydes | Wolfgang Bernhagen, Helmut Springer | 1981-06-23 |