Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7053533 | Piezoelectric resonator element of cyrstallographic point group 32 | Herbert Thanner | 2006-05-30 |
| 6972841 | Method and apparatus for determining the non-volatile component of aerosol particles in a gas sample | Christian Reiter, Wolfgang Schindler, Wolfgang Singer | 2005-12-06 |
| 6786075 | Method for the measurement of aerosol particles in gaseous samples | Friedrich Radke, Christian Reiter | 2004-09-07 |
| 6491753 | Method for the growing of single crystals | Wolfgang Wallnofer, Ferdinand Krispel, Herbert Thanner | 2002-12-10 |
| 5557968 | Piezoelectric measuring element for measuring mechanical variables | Roland Selic | 1996-09-24 |
| 5440188 | Piezoelectric crystal element | Wolfgang Wallnofer | 1995-08-08 |
| 5375556 | Hydrothermal process for growing large crystals or crystal layers | Gabriele Voborsky, Uwe Posch, Wolfgang Wallnofer | 1994-12-27 |
| 5369327 | Piezoelectric crystal element | Wolfgang Wallnofer | 1994-11-29 |
| 5220836 | Method and arrangement for piezoelectric measurement | Klaus-Christoph Harms, Joseph Moik | 1993-06-22 |
| 5098673 | Apparatus for growing homogeneous crystals | Günter Engel, Alfred Enko, Uwe Posch | 1992-03-24 |
| 5010302 | Charge amplifier circuit | Guenther Wegscheider, Gerhard Woess | 1991-04-23 |
| 4992694 | Piezoelectric crystal element on the basis of GAPO.sub.4 | Engel Gunter | 1991-02-12 |
| 4953390 | Method and a device for measuring the air/fuel ratio of an internal combustion engine | Wolfgang Schindler, Erich Schiefer | 1990-09-04 |
| 4946545 | Method of growing homogeneous crystals | Günter Engel, Alfred Enko, Uwe Posch | 1990-08-07 |
| 4902926 | Piezoelectric measuring element | Günter Engel, Helmut List | 1990-02-20 |
| 4881003 | Method and device for reducing the water content in piezoelectric GAPO.sub. 4 | Günter Engel, Helmut List, Uwe Posch, Alfred Nitsch | 1989-11-14 |
| 4771176 | Method for quantitative analysis of hydrocarbon | Erich Schiefer, Wolfgang Schindler | 1988-09-13 |
| 4737676 | Transducer with a flexible piezoelectric layer as a sensor element | Günter Engel, Klaus-Christoph Harms, Helmut List | 1988-04-12 |
| 4737652 | Method for the periodic determination of a quantity to be measured, using a reference signal | Leopold Faschingleitner, Wolfgang Schindler | 1988-04-12 |
| 4667127 | Piezoelectric sensor element with at least two single crystal elements | Johann Stubenberg, Alfred Enko | 1987-05-19 |
| 4577105 | Method of determining masses of absorbing components of a sample in a test volume and a device for implementation of this method | Wolfgang Schindler | 1986-03-18 |
| 4525627 | Method and device for continuous measurement of the mass of aerosol particles in gaseous samples | Wolfgang Schindler | 1985-06-25 |
| 4518861 | Method for the continuous measurement of the mass of aerosol particles in gaseous samples and a device for the implementation of the method | Wolfgang Schindler, Leopold Faschingleitner | 1985-05-21 |
| 4467271 | Test apparatus for determination of vibration characteristics of piezoelectric transducers | Friedrich Ruckenbauer | 1984-08-21 |
| 4441044 | Transducer with a piezoelectric sensor element | Friedrich Ruckenbauer, Peter Claassen | 1984-04-03 |