RS

Robert Sprague

MA Materion: 11 patents #5 of 190Top 3%
Overall (All Time): #310,251 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12422605 Near infrared optical interference filters with improved transmission Shengyuan Bai 2025-09-23
12000033 Method of fabricating anisotropic optical interference filter 2024-06-04
11474422 Reflective color correction for phosphor illumination systems Michael Newell 2022-10-18
11372144 Near infrared optical interference filters with improved transmission Shengyuan Bai 2022-06-28
11365471 Method of fabricating anisotropic optical interference filter 2022-06-21
10871644 Enhancement of output of optically pumped phosphor by use of surface nanostructures Michael Newell 2020-12-22
10502880 Method of fabricating anisotropic optical interference filter 2019-12-10
10437042 Enhancement of output of optically pumped phosphor by use of surface nanostructures Michael Newell 2019-10-08
9989684 Near infrared optical interference filters with improved transmission 2018-06-05
9927369 Automated defect detection and mapping for optical filters 2018-03-27
9804310 Method of fabricating anisotropic optical interference filter 2017-10-31
4795349 Coded font keyboard apparatus Joan Sprague 1989-01-03
4768959 Method of teaching and transcribing of language through the use of a periodic code of language elements Joan Sprague 1988-09-06
4650423 Method of teaching and transcribing of language through the use of a periodic code of language elements Joan Sprague 1987-03-17
4515566 Flip card apparatus for forming units of speech 1985-05-07