Melzig; Manfred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Melzig; Manfred.The latest application filed is for "photochromic fused naphthopyrans having a benzene ring which is adjacent to the pyran oxygen and is linked to the para substituent via both meta positions".
Company Profile
0.36.18
- Melzig; Manfred - Wessling DE
Patent Activity
| Patent | Date |
|---|---|
| Photochromic fused naphthopyrans having a benzene ring which is adjacent to the pyran oxygen and is linked to the para substituent via both meta positions Grant 8,933,220 - Melzig , et al. January 13, 2 | 2015-01-13 |
| Photochromic Fused Naphthopyrans Having A Benzene Ring Which Is Adjacent To The Pyran Oxygen And Is Linked To The Para Substituent Via Both Meta Positions App 20130310556 - Melzig; Manfred ; et al. | 2013-11-21 |
| Photochromic naphthopyrans having a double-bridged terphenyl sub-unit Grant 8,486,312 - Melzig , et al. July 16, 2 | 2013-07-16 |
| Photochromic benzopyrano-benzopyrans with further fusing Grant 8,236,716 - Melzig , et al. August 7, 2 | 2012-08-07 |
| Photochromic spirodihydrophenanthropyrans Grant 8,013,174 - Weigand , et al. September 6, 2 | 2011-09-06 |
| Photochromic Benzopyrano-benzopyrans With Further Fusing App 20110201489 - Melzig; Manfred ; et al. | 2011-08-18 |
| Photochromic plastic object Grant 7,922,941 - Rohlfing , et al. April 12, 2 | 2011-04-12 |
| Photochromic Naphthopyrans Having A Double-bridged Terphenyl Sub-unit App 20110081482 - Melzig; Manfred ; et al. | 2011-04-07 |
| Photochromic benzopyrans Grant 7,892,296 - Melzig , et al. February 22, 2 | 2011-02-22 |
| Photochromic Benzopyrans App 20100243971 - Melzig; Manfred ; et al. | 2010-09-30 |
| Photochromic h-annellated benzo[f]chromene compounds Grant 7,544,315 - Melzig , et al. June 9, 2 | 2009-06-09 |
| Photochromic naphthopyrans Grant 7,459,555 - Melzig , et al. December 2, 2 | 2008-12-02 |
| Photochromic Spirodihydrophenanthropyrans App 20080262248 - WEIGAND; Udo ; et al. | 2008-10-23 |
| Photochromic Plastic Object App 20080251772 - Rohlfing; Yven ; et al. | 2008-10-16 |
| Photochromic h-annellated benzo[f]chromene compounds App 20070246692 - Melzig; Manfred ; et al. | 2007-10-25 |
| Substituted phenanthropyrans Grant 7,229,576 - Mann , et al. June 12, 2 | 2007-06-12 |
| Blue 3H-naphtho[2,1-b]pyran compounds and use thereof in photochromic articles Grant 7,229,989 - Mann , et al. June 12, 2 | 2007-06-12 |
| Substituted phenanthropyrans App 20060219990 - Mann; Claudia ; et al. | 2006-10-05 |
| Neutral-color gray photochromic synthetic resin article App 20060011898 - Melzig; Manfred ; et al. | 2006-01-19 |
| Photochromic 3H-naphtho[2,1-b]-pyran compounds and photochromic articles produced therewith Grant 6,967,249 - Mann , et al. November 22, 2 | 2005-11-22 |
| Photochromic compounds Grant 6,936,725 - Melzig , et al. August 30, 2 | 2005-08-30 |
| High index curable photochromic composition and its process Grant 6,933,325 - Zheng , et al. August 23, 2 | 2005-08-23 |
| Blue 3H-naphtho[2,1-b]pyran compounds and use thereof in photochromic articles App 20050096467 - Mann, Claudia ; et al. | 2005-05-05 |
| Heterocyclically annellated indenochromene derivatives Grant 6,881,850 - Mann , et al. April 19, 2 | 2005-04-19 |
| Photochromic synthetic resin object with permanently increased contrast Grant 6,853,471 - Sommer , et al. February 8, 2 | 2005-02-08 |
| Photochromic 3H-naphtho[2,1-b]-pyran compounds and photochromic articles produced therewith App 20040267013 - Mann, Claudia ; et al. | 2004-12-30 |
| Heterocyclically annellated indenochromene derivatives App 20040092743 - Mann, Claudia ; et al. | 2004-05-13 |
| H-annellated benzo[f]chromenes Grant 6,686,468 - Mann , et al. February 3, 2 | 2004-02-03 |
| Photochromic pyran compounds Grant 6,683,709 - Mann , et al. January 27, 2 | 2004-01-27 |
| Photochromic heterocyclically anellated indenochromene compounds Grant 6,660,727 - Mann , et al. December 9, 2 | 2003-12-09 |
| High index curable photochromic composition and its process App 20030158284 - Zheng, Qiang ; et al. | 2003-08-21 |
| Photochromic compounds App 20030045714 - Melzig, Manfred ; et al. | 2003-03-06 |
| H-annellated benzo[f]chromenes App 20030040623 - Mann, Claudia ; et al. | 2003-02-27 |
| Photochromic synthetic resin object with permanently increased contrast App 20020118431 - Sommer, Hans-Peter ; et al. | 2002-08-29 |
| Photochromic naphthopyrans App 20020052499 - Melzig, Manfred ; et al. | 2002-05-02 |
| Neutral-colored gray photochromic plastic object Grant 6,373,615 - Mann , et al. April 16, 2 | 2002-04-16 |
| Photochromic spirofluorenopyran compounds Grant 6,331,625 - Mann , et al. December 18, 2 | 2001-12-18 |
| Spirofluorenopyrans Grant 6,315,928 - Mann , et al. November 13, 2 | 2001-11-13 |
| Photochromic plastic object Grant 6,306,316 - Mann , et al. October 23, 2 | 2001-10-23 |
| Photochromic spirofluorenopyran compounds Grant 6,225,466 - Mann , et al. May 1, 2 | 2001-05-01 |
| Diaryl-2H-naphthopyrans Grant 6,190,580 - Melzig , et al. February 20, 2 | 2001-02-20 |
| Process for the production of a photochromic object Grant 6,171,525 - Effer , et al. January 9, 2 | 2001-01-09 |
| Photochromic naphtopyrane colorants, method for the production and use thereof, photochromic object Grant 6,146,554 - Melzig , et al. November 14, 2 | 2000-11-14 |
| Photochromically colored object Grant 6,102,543 - Melzig August 15, 2 | 2000-08-15 |
| Diaryl-2H-naphthopyrans Grant 6,036,890 - Melzig , et al. March 14, 2 | 2000-03-14 |
| Diaryl-2h-napthopyrans Grant 5,952,515 - Melzig , et al. September 14, 1 | 1999-09-14 |
| Photochromic 3H-naphthopyrans Grant 5,707,557 - Melzig , et al. January 13, 1 | 1998-01-13 |
| Photochromic compounds Grant 5,645,768 - Melzig , et al. July 8, 1 | 1997-07-08 |
| Optically transparent photochromic plastic material Grant 5,498,686 - Effer , et al. March 12, 1 | 1996-03-12 |
| Photochrome spiroindoline-oxazines Grant 4,959,471 - Melzig September 25, 1 | 1990-09-25 |
| Anti-reflection film for an optical element consisting of an organic material Grant 4,852,974 - Melzig , et al. August 1, 1 | 1989-08-01 |
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