Challener, IV; William A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Challener, IV; William A..The latest application filed is for "updatable optical data storage disc having reduced crosstalk between tracks, and drive for same".
- Challener, IV; William A. - Grant Township MN
- Challener, IV; William A. - Little Canada MN
| Patent | Date |
|---|---|
| Updatable optical data storage disc having reduced crosstalk between tracks, and drive for same Grant 5,986,997 - Challener, IV November 16, 1 | 1999-11-16 |
| Achromatic polarization-rotating right-angle prism system Grant 5,751,482 - Challener, IV May 12, 1 | 1998-05-12 |
| Exchange-coupled direct overwrite magneto-optic recording media Grant 5,639,567 - Challener, IV June 17, 1 | 1997-06-17 |
| Magneto-optic recording medium having constant reflectance over a range of wavelengths Grant 5,620,792 - Challener, IV April 15, 1 | 1997-04-15 |
| Method for recording on a magneto-optic storage medium having two recording layers Grant 5,508,982 - Challener, IV April 16, 1 | 1996-04-16 |
| Magneto-optic recording medium having two recording layers, and drive for same Grant 5,414,678 - Challener, IV May 9, 1 | 1995-05-09 |
| Direct-overwrite magneto-optic media Grant 5,087,532 - Challener, IV February 11, 1 | 1992-02-11 |
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.
| 