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Yven Rohlfing
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Muenchen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Photochromic annelated naphthopyrane systems with special substitue...
Patent number
11,965,102
Issue date
Apr 23, 2024
Rodenstock GmbH
Udo Weigand
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
UV-curing-compatible photochromic fused naphthopyrans
Patent number
10,077,274
Issue date
Sep 18, 2018
Rodenstock GmbH
Udo Weigand
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic fluorenopyrans with defined dibenzo[B,D]pyrano fused a...
Patent number
9,963,574
Issue date
May 8, 2018
Rodenstock GmbH
Udo Weigand
G02 - OPTICS
Information
Patent Grant
Photochromic double-fused naphthopyrans
Patent number
9,151,872
Issue date
Oct 6, 2015
Rodenstock GmbH
Udo Weigand
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic bis-idenofused naphthopryans
Patent number
8,987,477
Issue date
Mar 24, 2015
Rodenstock GmbH
Udo Weigand
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic fused naphthopyrans having a benzene ring which is adj...
Patent number
8,933,220
Issue date
Jan 13, 2015
Rodenstock GmbH
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic benzopyrano-benzopyrans with further fusing
Patent number
8,236,716
Issue date
Aug 7, 2012
Rodenstock GmbH
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic spirodihydrophenanthropyrans
Patent number
8,013,174
Issue date
Sep 6, 2011
Rodenstock GmbH
Udo Weigand
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic plastic object
Patent number
7,922,941
Issue date
Apr 12, 2011
Rodenstock GmbH
Yven Rohlfing
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Photochromic benzopyrans
Patent number
7,892,296
Issue date
Feb 22, 2011
Rodenstock GmbH
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Photochromic h-annellated benzo[f]chromene compounds
Patent number
7,544,315
Issue date
Jun 9, 2009
Rodenstock GmbH
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
PHOTOCHROMIC ANNELATED NAPHTHOPYRANE SYSTEMS WITH SPECIAL SUBSTITUE...
Publication number
20210253865
Publication date
Aug 19, 2021
RODENSTOCK GMBH
Udo WEIGAND
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
UV-CURING-COMPATIBLE PHOTOCHROMIC FUSED NAPHTHOPYRANS
Publication number
20160152629
Publication date
Jun 2, 2016
Udo WEIGAND
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PHOTOCHROMIC FLUORENOPYRANS WITH DEFINED DIBENZO[B,D]PYRANO FUSED A...
Publication number
20150152246
Publication date
Jun 4, 2015
Udo Weigand
G02 - OPTICS
Information
Patent Application
Photochromic Bis-Idenofused Naphthopryans
Publication number
20140330028
Publication date
Nov 6, 2014
Udo Weigand
G02 - OPTICS
Information
Patent Application
Photochromic Double-Fused Naphthopyrans
Publication number
20140235876
Publication date
Aug 21, 2014
Udo Weigand
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
PHOTOCHROMIC FUSED NAPHTHOPYRANS HAVING A BENZENE RING WHICH IS ADJ...
Publication number
20130310556
Publication date
Nov 21, 2013
RODENSTOCK GMBH
Manfred Melzig
G02 - OPTICS
Information
Patent Application
PHOTOCHROMIC BENZOPYRANO-BENZOPYRANS WITH FURTHER FUSING
Publication number
20110201489
Publication date
Aug 18, 2011
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PHOTOCHROMIC NAPHTHOPYRANS HAVING A DOUBLE-BRIDGED TERPHENYL SUB-UNIT
Publication number
20110081482
Publication date
Apr 7, 2011
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PHOTOCHROMIC BENZOPYRANS
Publication number
20100243971
Publication date
Sep 30, 2010
Manfred Melzig
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Photochromic Spirodihydrophenanthropyrans
Publication number
20080262248
Publication date
Oct 23, 2008
Rodenstock GmbH
Udo WEIGAND
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Photochromic Plastic Object
Publication number
20080251772
Publication date
Oct 16, 2008
Rodenstock GmbH
Yven Rohlfing
G02 - OPTICS
Information
Patent Application
Photochromic h-annellated benzo[f]chromene compounds
Publication number
20070246692
Publication date
Oct 25, 2007
Rodenstock GmbH
Manfred Melzig
C07 - ORGANIC CHEMISTRY