Clara E. Nelson

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Naphthols useful for preparing indeno-fused photochromic naphthopyrans
- Patent number 7,557,208
- Issue date Jul 7, 2009
- Transitions Optical, Inc.
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Naphthols useful for preparing indeno-fused photochromic naphthopyrans
- Patent number 7,517,982
- Issue date Apr 14, 2009
- Transitions Optical, Inc.
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic articles with reduced temperature dependency and metho...
- Patent number 7,320,826
- Issue date Jan 22, 2008
- PPG Industries Ohio, Inc.
- Anil Kumar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Indeno-fused photochromic naphthopyrans, naphthols and photochromic...
- Patent number 7,262,295
- Issue date Aug 28, 2007
- Transitions Optical, Inc.
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic articles that activate behind ultraviolet radiation bl...
- Patent number 7,166,357
- Issue date Jan 23, 2007
- Transitions Optical, Inc.
- Anil Kumar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic naphthopyrans
- Patent number 6,348,604
- Issue date Feb 19, 2002
- PPG Industries Ohio, Inc.
- Clara M. Nelson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Indeno-fused photochromic naphthopyrans
- Patent number 6,296,785
- Issue date Oct 2, 2001
- PPG Industries Ohio, Inc.
- Clara M. Nelson
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
NAPHTHOLS USEFUL FOR PREPARING INDENO-FUSED PHOTOCHROMIC NAPHTHOPYRANS
- Publication number 20090062533
- Publication date Mar 5, 2009
- TRANSITIONS OPTICAL, INC.
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Naphthols useful for preparing indeno-fused photochromic naphthopyrans
- Publication number 20070155964
- Publication date Jul 5, 2007
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Photochromic articles with reduced temperature dependency and metho...
- Publication number 20040191520
- Publication date Sep 30, 2004
- Anil Kumar
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Indeno-fused photochromic naphthopyrans, naphthols and photochromic...
- Publication number 20040185255
- Publication date Sep 23, 2004
- Robert W. Walters
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Photochromic articles that activate behind ultraviolet radiation bl...
- Publication number 20040185268
- Publication date Sep 23, 2004
- Anil Kumar
- C07 - ORGANIC CHEMISTRY

Clara E. Nelson

Person

Patents Grantslast 30 patents

Naphthols useful for preparing indeno-fused photochromic naphthopyrans

Naphthols useful for preparing indeno-fused photochromic naphthopyrans

Photochromic articles with reduced temperature dependency and metho...

Indeno-fused photochromic naphthopyrans, naphthols and photochromic...

Photochromic articles that activate behind ultraviolet radiation bl...

Photochromic naphthopyrans

Indeno-fused photochromic naphthopyrans

Patents Applicationslast 30 patents

NAPHTHOLS USEFUL FOR PREPARING INDENO-FUSED PHOTOCHROMIC NAPHTHOPYRANS

Naphthols useful for preparing indeno-fused photochromic naphthopyrans

Photochromic articles with reduced temperature dependency and metho...

Indeno-fused photochromic naphthopyrans, naphthols and photochromic...

Photochromic articles that activate behind ultraviolet radiation bl...