Hughes; Frank J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hughes; Frank J..The latest application filed is for "novel naphthopyran compounds, photoresponsive compositions and lenses".
- Hughes; Frank J. - Edina MN
| Patent | Date |
|---|---|
| Naphthopyran compounds, photoresponsive compositions and lenses Grant 6,863,843 - Hughes , et al. March 8, 2 | 2005-03-08 |
| Novel naphthopyran compounds, photoresponsive compositions and lenses App 20020080451 - Hughes, Frank J. ; et al. | 2002-06-27 |
| Photochromic naphthopyran compounds Grant 6,337,409 - Hughes , et al. January 8, 2 | 2002-01-08 |
| Photochromic benzopyran compounds Grant 5,869,662 - Hughes February 9, 1 | 1999-02-09 |
| Photochromic articles Grant 5,840,926 - Hughes November 24, 1 | 1998-11-24 |
| Coating composition and process for producing coated articles Grant 5,786,032 - Hughes July 28, 1 | 1998-07-28 |
| Photochromic naphthopyran compounds Grant 5,759,450 - Hughes , et al. June 2, 1 | 1998-06-02 |
| Photochromic spironaphthopyran compounds Grant 5,705,102 - Hughes , et al. January 6, 1 | 1998-01-06 |
| Photochromic chromene derivatives Grant 5,702,645 - Hughes December 30, 1 | 1997-12-30 |
| Photochromic spironaphthopyran compounds Grant 5,679,805 - Hughes October 21, 1 | 1997-10-21 |
| Photochromic articles Grant 5,658,502 - Hughes August 19, 1 | 1997-08-19 |
| Photochromic spironaphthopyran compounds Grant 5,628,935 - Hughes , et al. May 13, 1 | 1997-05-13 |
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