Birkeland; Joel D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Birkeland; Joel D..The latest application filed is for "low distortion mos attenuator".
- Birkeland; Joel D. - North Plains OR
- Birkeland; Joel D - North Plains OR
- Birkeland; Joel D. - Hillsboro OR
- Birkeland; Joel D. - Gilbert AZ
- Birkeland; Joel D. - Phoenix AZ
| Patent | Date |
|---|---|
| Energy efficient, low distortion amplification apparatus Grant 9,231,538 - Birkeland , et al. January 5, 2 | 2016-01-05 |
| Low distortion MOS attenuator Grant 8,878,588 - Meyer , et al. November 4, 2 | 2014-11-04 |
| Low Distortion MOS Attenuator App 20140210539 - Meyer; Robert G. ; et al. | 2014-07-31 |
| Voltage controlled variable attenuator Grant 8,736,344 - Birkeland , et al. May 27, 2 | 2014-05-27 |
| Low distortion MOS attenuator Grant 8,686,780 - Meyer , et al. April 1, 2 | 2014-04-01 |
| Low Distortion MOS Attenuator App 20130214841 - Meyer; Robert G. ; et al. | 2013-08-22 |
| Low distortion MOS attenuator Grant 8,390,359 - Meyer , et al. March 5, 2 | 2013-03-05 |
| Low Distortion Mos Attenuator App 20110156809 - Meyer; Robert G. ; et al. | 2011-06-30 |
| Driver amplifiers with low noise standby mode characteristics Grant 5,994,955 - Birkeland November 30, 1 | 1999-11-30 |
| Bias circuit for depletion mode field effect transistors Grant 5,506,544 - Staudinger , et al. April 9, 1 | 1996-04-09 |
| Frequency mixing circuit with impedance transforming power combiner Grant 5,325,000 - Birkeland , et al. June 28, 1 | 1994-06-28 |
uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.
While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.
All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.
| 