Inventor

MARTTILA CHARLES A

US28 patents

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

MARTTILA CHARLES A

3M INNOVATIVE PROPERTIES CO

Infrared light reflecting film

Optical sheets suitable for spreading light

Process for making light guides with extraction structures and light guides produced thereby

Solar control multilayer film

Privacy enclosure

Process for making light guides with extraction structures and light guides produced thereby

Hybrid light redirecting and light diffusing constructions

Sun-facing light redirecting films with reduced glare

Sun-facing light redirecting films with reduced glare

Room-facing light redirecting films with reduced glare

Microoptics for glazing

Microoptics for glazing

Insulated glazing units and microoptical layer including microstructured anisotropic diffuser and methods

Keypad with virtual image

Microoptics for glazing

Microoptics for glazing

Microoptics for glazing

Hybrid light redirecting and light diffusing constructions

Light redirecting film laminate

PADIYATH RAGHUNATH

Light redirecting film laminate

Dual-sided daylight redirecting film

Hybrid light redirecting and light diffusing constructions

Light redirecting constructions

MINNESOTA MINING & MFG

Perforated acoustical attenuators

Use of materials comprising microbubbles as acoustical barriers

Privacy enclosure

MARTTILA CHARLES A

Process for making light guides with extraction structures and light guides produced thereby

GATES BRIAN J

Processes for producing optical elements showing virtual images