Inventor
VELDKAMP BRAD S
US11 patents
⚠️ This page may combine multiple inventors who share the name “VELDKAMP BRAD S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TRANSITIONS OPTICAL LTD
5 patentsUS12503543B2Dec 23, 2025
Curable photochromic polycarbodiimide compositions
TRANSITIONS OPTICAL LTD0 citations60
US12360401B2Jul 15, 2025
Photochromic film laminate
TRANSITIONS OPTICAL LTD0 citations60
US12247168B2Mar 11, 2025
Curable photochromic compositions including an oxazoline functional material
TRANSITIONS OPTICAL LTD0 citations60
US12163045B2Dec 10, 2024
Photochromic composition with polyol and poly(anhydride)
TRANSITIONS OPTICAL LTD0 citations60
US12319862B2Jun 3, 2025
Method for preparing a coated article
TRANSITIONS OPTICAL LTD0 citations46
PLEOTINT LLC
3 patentsBYKER HARLAN J
3 patentsUS8431045B2Apr 30, 2013
Ligand exchange thermochromic systems and high ε ligands for same
BYKER HARLAN J11 citations90
US8182718B2May 22, 2012
Ligand exchange thermochromic systems and high ε ligands for same
BYKER HARLAN J7 citations82
US9011734B2Apr 21, 2015
Ligand exchange thermochromic, (LETC), systems
BYKER HARLAN J0 citations50