Inventor · disambiguated record
Manfred Melzig
Also filed as: MELZIG MANFRED
41 granted patents·1 pending application·1,031 citations·filing 1986–2011
98Inventor score
Top patents by PatentIndex Score
42 records- 0196US5952515ADiaryl-2h-napthopyransRODENSTOCK OPTIK G·Filed 1995·Granted Sep 14, 1999·88 cites·8 claims
- 0295US6146554APhotochromic naphtopyrane colorants, method for the production and use thereof, photochromic objectRODENSTOCK OPTIK G·Filed 1998·Granted Nov 14, 2000·103 cites·27 claims
- 0393US6683709B2Photochromic pyran compoundsRODENSTOCK GMBH·Filed 2002·Granted Jan 27, 2004·40 cites·10 claims
- 0493US4959471APhotochrome spiroindoline-oxazinesRODENSTOCK OPTIK G·Filed 1989·Granted Sep 25, 1990·34 cites·13 claims
- 0592US6315928B1SpirofluorenopyransRODENSTOCK OPTIK G·Filed 2000·Granted Nov 13, 2001·36 cites·7 claims
- 0692US6036890ADiaryl-2H-naphthopyransRODENSTOCK OPTIK G·Filed 1998·Granted Mar 14, 2000·77 cites·6 claims
- 0792US5801243APhotochromic compounds (7)RODENSTOCK OPTIK G·Filed 1994·Granted Sep 1, 1998·22 cites·10 claims
- 0888US6660727B1Photochromic heterocyclically anellated indenochromene compoundsRODENSTOCK GMBH·Filed 2000·Granted Dec 9, 2003·24 cites·7 claims
- 0986US6225466B1Photochromic spirofluorenopyran compoundsRODENSTOCK OPTIK G·Filed 1999·Granted May 1, 2001·35 cites·10 claims
- 1086US6171525B1Process for the production of a photochromic objectRODENSTOCK OPTIK G·Filed 1998·Granted Jan 9, 2001·60 cites·21 claims
- 1185US5637709APhotochromatic substancesRODENSTOCK OPTIK G·Filed 1995·Granted Jun 10, 1997·29 cites·4 claims
- 1285US4852974AAnti-reflection film for an optical element consisting of an organic materialRODENSTOCK OPTIK G·Filed 1986·Granted Aug 1, 1989·82 cites·6 claims
- 1384US6373615B1Neutral-colored gray photochromic plastic objectRODENSTOCK OPTIK G·Filed 1999·Granted Apr 16, 2002·56 cites·8 claims
- 1482US6102543APhotochromically colored objectRODENSTOCK OPTIK G·Filed 1997·Granted Aug 15, 2000·59 cites·7 claims
- 1581US6331625B1Photochromic spirofluorenopyran compoundsRODENSTOCK OPTIK G·Filed 2000·Granted Dec 18, 2001·10 cites·21 claims
- 1681US5399687APhotochrome alkyl substituted spiroindoline compoundsRODENSTOCK OPTIK G·Filed 1993·Granted Mar 21, 1995·19 cites·20 claims
- 1779US7459555B2Photochromic naphthopyransRODENSTOCK GMBH·Filed 2001·Granted Dec 2, 2008·8 cites·8 claims
- 1877US5645768APhotochromic compoundsRODENSTOCK OPTIK G·Filed 1995·Granted Jul 8, 1997·20 cites·4 claims
- 1977US5498686AOptically transparent photochromic plastic materialRODENSTOCK OPTIK G·Filed 1994·Granted Mar 12, 1996·53 cites·6 claims
- 2075US7544315B2Photochromic h-annellated benzo[f]chromene compoundsRODENSTOCK GMBH·Filed 2007·Granted Jun 9, 2009·3 cites·9 claims
- 2174US8933220B2Photochromic fused naphthopyrans having a benzene ring which is adjacent to the pyran oxygen and is linked to the para substituent via both meta positionsMELZIG MANFRED·Filed 2011·Granted Jan 13, 2015·2 cites·14 claims
- 2274US6190580B1Diaryl-2H-naphthopyransRODENSTOCK OPTIK G·Filed 1999·Granted Feb 20, 2001·25 cites·2 claims
- 2373US8013174B2Photochromic spirodihydrophenanthropyransRODENSTOCK GMBH·Filed 2008·Granted Sep 6, 2011·1 cites·9 claims
- 2473US6686468B2H-annellated benzo[f]chromenesRODENSTOCK OPTIK G·Filed 2001·Granted Feb 3, 2004·6 cites·12 claims
- 2571US8486312B2Photochromic naphthopyrans having a double-bridged terphenyl sub-unitMELZIG MANFRED·Filed 2009·Granted Jul 16, 2013·1 cites·20 claims
- 2668US6933325B2High index curable photochromic composition and its processRODENSTOCK GMBH·Filed 2002·Granted Aug 23, 2005·10 cites·32 claims
- 2767US6936725B2Photochromic compoundsRODENSTOCK GMBH·Filed 2001·Granted Aug 30, 2005·3 cites·1 claims
- 2866US6306316B1Photochromic plastic objectRODENSTOCK OPTIK G·Filed 1999·Granted Oct 23, 2001·28 cites·15 claims
- 2965US5707557APhotochromic 3H-naphthopyransRODENSTOCK OPTIK G·Filed 1996·Granted Jan 13, 1998·30 cites·11 claims
- 3064US6881850B2Heterocyclically annellated indenochromene derivativesRODENSTOCK GMBH·Filed 2003·Granted Apr 19, 2005·4 cites·6 claims
- 3162US8236716B2Photochromic benzopyrano-benzopyrans with further fusingMELZIG MANFRED·Filed 2008·Granted Aug 7, 2012·1 cites·24 claims
- 3262US5990305APhotochromic diaryl-3H-naphthopyraneRODENSTOCK OPTIK G·Filed 1996·Granted Nov 23, 1999·9 cites·20 claims
- 3361US6342459B1Photochromic naphthopyransRODENSTOCK OPTIK G·Filed 1999·Granted Jan 29, 2002·22 cites·9 claims
- 3458US5608065APhotochromatic substancesRODENSTOCK OPTIK G·Filed 1995·Granted Mar 4, 1997·6 cites·4 claims
- 3554US7229989B2Blue 3H-naphtho[2,1-b]pyran compounds and use thereof in photochromic articlesRODENSTOCK GMBH·Filed 2004·Granted Jun 12, 2007·3 cites·12 claims
- 3649US7922941B2Photochromic plastic objectRODENSTOCK GMBH·Filed 2008·Granted Apr 12, 2011·0 cites·12 claims
- 3749US7892296B2Photochromic benzopyransRODENSTOCK GMBH·Filed 2008·Granted Feb 22, 2011·0 cites·14 claims
- 3849US6853471B2Photochromic synthetic resin object with permanently increased contrastRODENSTOCK GMBH·Filed 2002·Granted Feb 8, 2005·8 cites·6 claims
- 3948US7229576B2Substituted phenanthropyransRODENSTOCK GMBH·Filed 2006·Granted Jun 12, 2007·0 cites·9 claims
- 4048US2006011898A1Neutral-color gray photochromic synthetic resin articleRODENSTOCK GMBH·Filed 2005·Application pending·0 cites
- 4146US6967249B2Photochromic 3H-naphtho[2,1-b]-pyran compounds and photochromic articles produced therewithRODENSTOCK GMBH·Filed 2004·Granted Nov 22, 2005·1 cites·10 claims
- 4241US4927239AAnti-reflection film for an optical element consisting of an organic materialRODENSTOCK OPTIK G·Filed 1989·Granted May 22, 1990·13 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Manfred Melzig files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →