Inventor

BLAU DAVID ARTHUR

US4 patents

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

Sigma Metalytics LLC

2 patents

US10417855B2Sep 17, 2019

Systems and methods for detecting fake or altered bullion, coins, and metal

Sigma Metalytics LLC2 citations63

US10839633B2Nov 17, 2020

Systems and methods for detecting fake or altered bullion, coins, and metal

Sigma Metalytics LLC0 citations42

BLAU DAVID ARTHUR

1 patent

US6667586B1Dec 23, 2003

Variable frequency electronic ballast for gas discharge lamp

BLAU DAVID ARTHUR8 citations62

(unassigned)

1 patent

US6696797B1Feb 24, 2004

Electronic ballast having valley frequency modulation for a gas discharge lamp

0 citations42