Inventor

LUDWIG MARY E

US6 patents

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

BILLMERS RICHARD I

5 patents

US8184270B1May 22, 2012

System for viewing an object in a visually obscured environment and method of use

BILLMERS RICHARD I10 citations81

US7355768B1Apr 8, 2008

Wavelength tunable holographic filter with broad acceptance angle and narrow spectral bandwidth

BILLMERS RICHARD I18 citations81

US7561255B1Jul 14, 2009

System for viewing objects at a fire scene and method of use

BILLMERS RICHARD I12 citations80

US7839550B1Nov 23, 2010

Volume holographic filter with broad acceptance angle and narrow spectral bandwidth

BILLMERS RICHARD I8 citations79

US7480048B1Jan 20, 2009

Monochromator employing single grating volume holograms and method of use

BILLMERS RICHARD I1 citations47

(unassigned)

1 patent

US6724467B1Apr 20, 2004

System for viewing objects at a fire scene and method of use