U.S. federal trademark · Serial No. 78407975
Optical Particle Identification is an EMSL proprietary service that incorporates physical testing with Polarized Light Microscopy (PLM) to identify particles typically large enough to be seen by the naked eye; Such particles are cellulose and synthetic fibers, asbestos, fibrous glass, dust mites and arthropod fragments, major minerals and skin fragments; This test can help isolate the source for dust buildup and is routinely utilized on job sites where indoor air quality is questioned
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.