Inventor

KNOWLES DAVID B

US51 patents

⚠️ This page may combine multiple inventors who share the name “KNOWLES DAVID B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KNOWLES DAVID B

TRANSITIONS OPTICAL INC

Substituted naphthopyrans

Substituted naphthopyrans

Photochromic naphthopyran compounds

Photochromic naphthopyran compounds

Photochromic naphthopyrans

Substituted naphthopyrans

Photochromic naphthopyran compounds

Substituted naphthopyrans

Substituted naphthopyrans

Photochromic naphthopyran compounds

Photochromic naphthopyran compounds

Photochromic naphthopyrans

Substituted naphthopyrans

Photochromic tetraphenyl naphthodipyrans

Photochromic naphthopyrans

Substituted naphthopyrans

Photochromic optical articles prepared with reversible thermochromic materials

Curable photochromic compositions

UNIVERSAL DISPLAY CORP

Organic light emitting devices having reduced pixel shrinkage

Organic light emitting materials and devices

Organic light emitting materials and devices

Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof

Organic light emitting materials and devices

Metal complexes of cyclometallated imidazo (1,2-f) phenanthridine (1,2-a:1′, 2′-c),quinazoline ligands and isoelectronic and benzannulated analogs thereof

Organic light emitting devices having reduced pixel shrinkage

Electroluminescent stability

Materials and structures for enhancing the performance of organic light emitting devices

Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof

Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof

CHOPRA ANU

Ophthalmic devices comprising photochromic materials having extended pi-conjugated systems

Photochromic materials having extended pi-conjugated systems and compositions and articles including the same

Photochromic materials having extended pi-conjugated systems and compositions and articles including the same

Photochromic materials having extended pi-conjugated systems and compositions and articles including the same

Photochromic materials that include 6-amino substituted indeno-fused naphthopyrans

Photochromic materials that include 6-amino substituted indeno-fused naphthopyrans

PPG INDUSTRIES INC

Photochromic naphthopyran compounds

Substituted phenanthropyrans

Photochromic spironaphthopyran compounds

Photochromic compound and articles containing the same

UNIV SOUTHERN CALIFORNIA

Phosphorescent compounds and devices comprising the same

Organometallic compounds for use in electroluminescent devices

PPG IND OHIO INC

Photochromic naphthopyrans

Indeno-fused photochromic naphthopyrans

JOHNSON & JOHNSON VISION CARE

Photochromic materials having extended pi-conjugated systems and compositions and articles including the same

Photochromic materials having extended pi-conjugated systems and compositions and articles including the same

KNOWLES DAVID B

Metal complexes of cyclometallated imidazo[1,2-ƒ]phenanthridine and diimidazo[1,2-a:1&#39;,2&#39;-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof

Photochromic optical articles prepared with reversible thermochromic materials

BEERS SCOTT

Blue phosphorescent imidazophenanthridine materials

BANCROFT KEVIN E

Photochromic materials that include indeno-fused naphthopyrans

TRANSITIONS OPTICAL LTD

Curable photochromic composition including a segmented polymer

Metal complexes of cyclometallated imidazo[1,2-ƒ]phenanthridine and diimidazo[1,2-a:1',2'-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof